Answer:
oligodendrocytes of the central nervous system (CNS)
Explanation:
the first hominin species to spread from africa, to make systematic tools, and to be associated with probable evidence for hunting and controlled use of fire is group of answer choices australopithecus africanus homo sapiens sapiens homo habilis homo erectus
The first hominin species will spread from Africa, to make systematic tools, and it can be associated with probable evidence for hunting and controlled use of fire is Homo erectus. Option D is correct.
While earlier hominins such as Australopithecus africanus and Homo habilis made simple tools, Homo erectus is known for making more complex tools and was the first hominin species to migrate out of Africa. They are also associated with evidence of hunting and the controlled use of fire, which allowed them to expand their diet and inhabit new environments.
Homo sapiens sapiens, or modern humans, did not exist during this time period, as they did not appear until much later in human history.
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--The given question is incomplete, the complete question is
"The first hominin species to spread from Africa, to make systematic tools, and to be associated with probable evidence for hunting and controlled use of fire is group of answer choices A) australopithecus africanus B) homo sapiens sapiens C) homo habilis D) homo erectus"--
most cells and cellular structures are: group of answer choices microscopic medical specialties quadrants body systems.
When cells are in their normal condition, interior features can be seen using a phase-contrast microscope.
High contrast and high-quality images of living cells in their natural condition can be seen using this microscope. As we check the choices The entire cell as well as sub-cellular components and compartments within it can be viewed using an electron microscope. Images of fluorescing samples are captured using a fluorescence microscope. Using a compound light microscope, the user can view a magnified image by allowing visible light to travel through the specimen (the biological sample you are examining) and be bent by the lens system. By boosting the light contrast between the various densities of the sample component, the phase-contrast microscope allows us to see living cells and organelles. Therefore, the correct response is a phase contrast microscope.
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a human karyotype indicates the sex chromosomes of an individual to be xyy. how many barr bodies would be visible in the nuclei of somatic cells from this person
In the nuclei of somatic cells from an individual with XYY karyotype, no Barr bodies would be visible.
In the case of an individual with an XYY karyotype, this indicates that they have two Y chromosomes and one X chromosome. This condition is known as XYY syndrome or Jacob's syndrome. Barr bodies are the condensed, inactive X chromosome in female somatic cells. Since males have only one X chromosome, they do not form Barr bodies.
In normal female cells, one of the two X chromosomes is randomly inactivated to form a compact structure called a Barr body. This process is called X-inactivation, and it balances the expression of genes between males and females. In males, the single X chromosome is not inactivated, and therefore no Barr bodies are present in the nuclei of their somatic cells.
In the case of an individual with an XYY karyotype, they still only have one X chromosome, and therefore, they would not have any Barr bodies visible in their somatic cells. This is because only females have the X-inactivation process, and males do not. In this case, since XYY syndrome only affects males, there would be no need for any Barr bodies to be present in their somatic cells.
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Select all of the organisms that typically have cell walls. 1. Animals 2. Fungi 3. Protozoa 4. Algae5. Plants.
With the exception of animals, every creature mentioned in the question normally has cell walls.
Cell walls, which enclose a cell's outside and offer structural support, are solid, semi-permeable structures.
Plants and algae have cell walls made of cellulose, another polysaccharide, although certain protozoa and fungi have cell walls formed of chitin. Animal cell walls are made up of lipids like collagen and proteins.
Cell walls are crucial for giving cells shape and acting as an additional barrier against the outside world. They are crucial for the cell's selective permeability, which lets only specific molecules enter or leave the cell.
Cell walls in certain species can function as a source of nutrition and a barrier against predators.
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what is the advantage of gene expression profiling with cdna chips where rna is reverse transcribed compared to microarray where rna samples are used directly?
Following are the advantage of gene expression profiling with cdna chips where rna is reverse transcribed compared to microarray where rna samples are used directly
One of the advantages of gene expression profiling with cDNA chips where RNA is reverse transcribed, compared to microarray where RNA samples are used directly, is that cDNA chips can provide more accurate and sensitive measurements of gene expression levels.
Reverse transcription of RNA into cDNA allows for amplification of the RNA samples, which can increase the sensitivity of the assay.
This is because the reverse transcription process converts RNA molecules into cDNA molecules, which are more stable and less susceptible to degradation than RNA molecules.
In addition, the amplification step increases the amount of cDNA available for analysis, which can improve the accuracy of the measurements.
In contrast, with microarrays where RNA samples are used directly, there is no amplification step.
As a result, microarrays may be less sensitive and accurate than cDNA chips, especially when analyzing low-abundance transcripts or small amounts of starting RNA.
Additionally, RNA samples are more prone to degradation and variability, which can introduce noise into the data and affect the accuracy of the measurements.
Overall, gene expression profiling with cDNA chips where RNA is reverse transcribed offers the advantage of increased sensitivity and accuracy, which can lead to more reliable and meaningful results. However, it is important to note that both approaches have their own strengths and weaknesses, and the choice of assay should be based on the specific research question and experimental design.
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This image shows movement of carbon through which processes?
A) The atmosphere and hydrosphere
B) Photosynthesis and the geosphere
C) The hydropshere and geosphere
D) Cellular respiration and photosynthesis
The image shows cellular respiration and photosynthesis.
How does cellular respiration relate to photosynthesis?Cellular respiration and photosynthesis are two processes that are intimately related in the living world, as they are part of the carbon cycle and energy flow in ecosystems.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose and other organic compounds. During photosynthesis, these organisms take in carbon dioxide and water and, using the energy from the sun, convert them into organic compounds and oxygen.
Cellular respiration, on the other hand, is the process by which cells of all living organisms break down organic compounds, such as glucose, to release the energy stored in their chemical bonds, and convert it into a form of chemical energy that the cell can use to perform work. This process involves the consumption of oxygen and the production of carbon dioxide as a waste product.
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what are types if services that environment provides to humans?
The environment provides various types of services to humans, including provisioning services such as food, water, and raw materials, cultural services such as recreation, tourism; and supporting services such as nutrient cycling and soil formation.
What is Nutrient cycling?
Nutrient cycling is the process by which nutrients such as carbon, nitrogen, phosphorus, and others are circulated through an ecosystem, being taken up by organisms, released back into the environment, and reused by other organisms. This cycle involves a range of biological, physical, and chemical processes, including photosynthesis, respiration, decomposition, and nutrient uptake and release by plants and animals.
Nutrient cycling is essential for maintaining the productivity and sustainability of ecosystems, as well as for supporting human activities such as agriculture and forestry.
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Enumerate five (5) neuromusculoskeletal conditions exhibiting genetic variations, in terms of disease causation and performance and repair
Five neuromusculoskeletal conditions exhibiting genetic variations, in terms of disease causation and performance and repair are muscular dystrophy, osteogenesis imperfect, Charcot-Marie-Tooth disease, Ehlers-Danlos syndrome, and Scoliosis.
Here are five neuromusculoskeletal conditions that exhibit genetic variations:
Muscular dystrophy: A muscular dystrophy is a group of inherited neuromuscular disorders characterized by progressive muscle weakness and degeneration. The disease is caused by mutations in genes that are involved in the production of proteins that are necessary for maintaining the structure and function of muscle cells. The mutations can affect the performance and repair of muscle cells, leading to muscle wasting and weakness.Osteogenesis imperfecta: Osteogenesis imperfecta is a genetic disorder that affects the formation of bones. It is caused by mutations in genes that produce collagen, a protein that is a major component of bones. The mutations can affect the performance and repair of bones, leading to increased susceptibility to fractures and bone deformities.Charcot-Marie-Tooth disease: A Charcot-Marie-Tooth disease is a group of inherited disorders that affect the peripheral nerves, causing muscle weakness and wasting. The disease is caused by mutations in genes that are involved in the production of proteins that are necessary for maintaining the structure and function of peripheral nerves. The mutations can affect the performance and repair of peripheral nerves, leading to muscle weakness and wasting.Ehlers-Danlos syndrome: Ehlers-Danlos syndrome is a group of inherited disorders that affect the connective tissues in the body. The disease is caused by mutations in genes that produce collagen, a protein that is a major component of connective tissues. The mutations can affect the performance and repair of connective tissues, leading to skin that is easily bruised and hypermobile joints.Scoliosis: The disorder known as scoliosis causes the spine to curve to one side. While scoliosis can have various causes, there are some genetic factors that can contribute to its development. Certain genetic mutations can affect the performance and repair of the muscles and connective tissues that support the spine, leading to an abnormal curvature of the spine.To learn more about genetic variation, refer:-
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an ecologist estimated 800 star-nosed moles, condylura cristata, per square mile in one woodlot and 1,600 per square mile in another woodlot. what was the ecologist comparing?
An ecologist estimated that in one woodlot there were 1,600 star-nosed moles (Condylura cristata) while in another there were 800. Ecologists compared the star-nosed mole population density.
What is the star-nosed mole dental formula?In dentistry, I 3/3, C 1/1, P 4/4, and M 3/3 equal 44. (Figure 1). The eyes are small and partially hidden in the pelage, and the pinnae are missing. Dense, silky, and velvety, the pelage is primarily blackish-brown to black dorsally and just little paler ventrally.
What is the star-nosed mole's range?A star-nosed mole of average size measures 19 mm (7.6 in) in length and weighs 50 g. (1.8 oz). Range and environment: Southeast Manitoba to Labrador make up the range Southeast Georgia, south and east to Nova Scotia.
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plants lose water through small openings on their leaves called:___.
Transpiration, which occurs through tiny holes on leaves, is how plants lose water.
What do plant leaves do?The shoot structures known as leaves affix to stems at nodes. The cells that make up leaves often include a heavy amount of chloroplasts, which are specialised locations for photosynthesis and are cell organelles that are only found in plants.
What use do the leaves serve?All leaves use photosynthesis to convert solar energy into usable energy. The plant's leaves are its main source of sustenance. In order to create nutrition (a sugar molecule called glucose), leaves mix the carbon dioxide in the air with water that enters through the plant's roots. They then expel oxygen into the atmosphere.
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two cells are compared. cell a has 10 mitochondria. cell b has 1 mitochondria. what will cell a likely be better able to do?
Cell A would most likely deliver more energy as compared to cell B. This is because it has more mitochondria which are known as the powerhouse of the cell.
What are Mitochondria?Mitochondria may be characterized as a type of double membrane-bound cell organelle that is found in the cytoplasm. They make most of the energy for the cell and have their own genetic material that is different from the genetic material found in the nucleus.
Mitochondria multiply when the energy needs of a cell increase. Therefore, power-hungry cells have more mitochondria than cells with lower energy needs. For example, repeatedly stimulating a muscle cell will spur the production of more mitochondria in that cell, to keep up with energy demand.
Therefore, cell A would most likely deliver more energy as compared to cell B. This is because it has more mitochondria which are known as the powerhouse of the cell.
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choose the true statements about inflammation (choose all that are correct): group of answer choices cytokines are often elevated fever often occurs memory b cells produce antibodies neutrophils phagocytize bacteria
The true statement regarding inflammation is fever often occurs from the given set of statements.
Five symptoms of inflammation?The ancients defined inflammation based on visual observation using five cardinal signs: rubor (redness), tumour (swelling), calor (heat; only applicable to the body's extremities), dolor (pain), and loss of function (functio laesa).Microorganisms known as pathogens, such as viruses, fungus, or bacteria. scratches or damage from foreign objects, which are external injuries (for example a thorn in your finger) reactions to radiation or chemicals.It's a protective reaction controlled mostly by the immune system, which sends white blood cells to the afflicted areas, causing redness and swelling or symptoms like fever.For more information on inflammation kindly visit to
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gravity is perceived by the cell, possibly by the sinking of:_____.
Answer:
Amyloplast
Explanation:
I hope this helps... :)
plants receive energy from the sun. what energy transformation occurs within a plant receiving radiant energy from the sun?
A plant uses energy from the Sun to make food transforms light energy to chemical energy. The correct option to this question is A.
What takes place when energy from the sun is transformed into plant energy?The process through which sugars are used to create chemical energy from light is known as photosynthesis. Oxygen is produced as a byproduct as water and carbon dioxide are converted into glucose (or other sugars) in a process that is fueled by light energy.The conversion of solar energy (from the Sun) into chemical energy occurs during the process of photosynthesis. The plant stores the chemical energy as sugar, which is then used to produce food. The components required to begin photosynthesis are all present in a plant's leaves, where sunlight is absorbed.For more information on photosynthesis kindly visit to
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Complete question: A plant uses energy from the Sun to make food. What kind of energy transformation is this? a. light energy to chemical energy b. chemical energy to light energy c. mechanical energy to chemical energy d. light energy to mechanical energy
Flowcharting clarifies what will happen in a process or
The statement that says that flowcharting clarifies what needs to happen in a process is true.
What is flowchart?A flowchart has been known as the graphic representation, as well as a diagram of the process. It has been very common in the multiple fields to the document, study and communicate complex processes in the clear diagrams.
This flowchart's objective has to be clarify what needs to happen in a process for it to be successful, and it has provide the ones involved with a common language when dealing with a project process.
Therefore, The statement that says that flowcharting clarifies what needs to happen in a process is true.
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select the correct statement about the hormonal events of the ovarian cycle. A. The cycle is regulated via a negative feedback loop. B. The corpus luteum releases an egg into a fallopian tube. C. Estrogen and progesterone cause a follicle to mature. D. Pituitary hormones cause the uterine lining to be shed monthly. E. A maturing follicle cause the uterine lining up to build.
The correct statement about hormonal events of the ovarian cycle is A maturing follicle cause the uterine lining up to build. The correct option to this question is E.
Ovarian cycle Both progesterone's positive feedback on the hypothalamus to boost GnRH secretion and estradiol's positive feedback on the pituitary that increases the pituitary's response to GnRH and encourages LH surge govern the entire cycle. The corpus luteum develops from the Graffian follicle following ovulation. Growth and follicular maturation are aided by gonadotropins (LH and FSH). The uterine lining sheds due to lower levels of estrogen and progesterone brought on by infertility. The endometrium thickens during the follicular phase as a result of the mature follicle's production of progesterone and estrogen. Choice E is the right response.For more information on ovarian cycle kindly visit to
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Policy makers are considering banning a pesticide that is toxic to humans
under certain conditions. Which of the following is an economic impact of
banning the pesticide?
A. Humans exposed to the pesticide will no longer be at risk from its
harmful effects.
B. Organisms harmed by the pesticide will experience an increase in
population.
C. Manufacturers that produce the pesticide will no longer profit from
its sale.
D. The remaining pesticide currently in the environment will take
years to dissipate.
Manufacturers that produce the pesticide will no longer profit from its sale.
However, the decision to ban the pesticide is typically made to prioritize public health and environmental protection over the economic interests of a specific industry.
What is Pesticides?Pesticides are chemicals that are used to kill or control pests, including insects, weeds, fungi, rodents, and other organisms that can cause harm to crops, animals, or humans. They are used in agriculture, forestry, and public health to protect crops, prevent the spread of disease, and control pests in urban and rural areas. Pesticides can be synthetic or natural and can be applied in various forms, such as sprays, dusts, baits, and fumigants. However, they can also have negative effects on the environment and human health, and their use is regulated by governments and international organizations.
The economic impact of banning a pesticide would be that the manufacturers that produce the pesticide would no longer be able to sell it and make a profit. This could lead to a loss of revenue and jobs in the pesticide manufacturing industry. However, the decision to ban the pesticide is typically made to prioritize public health and environmental protection over the economic interests of a specific industry.
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Is mitosis responsible for tissue growth?
Mitosis produces brand-new cells that are genetically identical to one another. In living things, mitosis promotes size growth and tissue repair.
Does tissue regenerate during mitosis?Replacement and regeneration of new cells: In living organisms, mitosis plays a crucial role in the regeneration and replacement of worn-out and damaged tissues. The process of mitosis makes it possible to produce identical copies of cells, which helps with tissue repair or cell replacement in worn-out tissue.
The cell division that tissues undergo is?The cell divides the copied DNA equally between the two new cells during mitosis. This indicates that the copied chromosomes are divided into two complete sets by the cell. Each end of the cell that is dividing in two should have one.
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Which layer of the epidermis has the largest quantities of keratin?
The highest concentrations of keratin are found in the stratum corneum, the epidermis' outermost layer.
What is keratin?The major structural element of hair, nails, feathers, hooves, and other hard and protective biological materials is keratin, a fibrous protein. It is a very resilient protein that can withstand abrasion, chemical deterioration, and other forms of wear and tear. Animal tissues like the skin and other tissues contain specialised cells called keratinocytes that create keratin. These cells are in charge of assembling the keratin proteins into strong, fibrous structures that shield and support the body. A complex network of genes and signalling pathways that manage the differentiation and maturation of keratinocytes controls the production of keratin.
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what is the megagametophyte also know as in angiosperm reproduction?
The megagametophyte in angiosperm reproduction is also known as the embryo sac. It is the female gametophyte that develops inside the ovule of a flower and gives rise to the egg cell and other cells necessary for fertilization and seed development.
In angiosperm reproduction, the megagametophyte, or embryo sac, is the female gametophyte that is produced within the ovule. The ovule is a small, structure located in the ovary of a flower, and it contains the megasporangium, where the megagametophyte develops. The megagametophyte is formed by a process called megasporogenesis, in which a single diploid cell in the ovule undergoes meiosis to produce four haploid megaspores. Typically, three of the megaspores degenerate, and the remaining one undergoes mitosis to form the embryo sac. The mature embryo sac has seven cells and eight nuclei, which are arranged in a specific pattern. At one end of the embryo sac, there are two synergids, which are important for pollen tube guidance. In the center of the embryo sac, there is the large central cell, which contains two polar nuclei. The egg cell is located near the synergids and is the cell that is fertilized by the sperm cell from the pollen grain during pollination.
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What occurrences could lead to the extinction of a rare species?
Select all that apply.
-enacting laws that limit habitat destruction
-environmental conservation
-introducing a foreign species
-cutting down of forests
-burning of fossil fuels
Answer:
Explanation:
The occurrences that could lead to the extinction of a rare species are:
cutting down of forests
introducing a foreign species
burning of fossil fuels
While enacting laws that limit habitat destruction and environmental conservation can help protect and preserve rare species, they are not the direct cause of their extinction. The destruction of their natural habitats, introduction of invasive species that compete for resources, and the negative impacts of climate change brought about by the burning of fossil fuels are among the main factors that can contribute to the extinction of rare species.
Answer:
cutting down of forests
habitat destruction
introduction of a foreign species
environmental pollution
Explanation:
These are some of the occurrences that could lead to the extinction of a rare species. Enacting laws that limit habitat destruction and environmental conservation can help to prevent species extinction. However, the burning of fossil fuels can contribute to environmental pollution and negatively impact many species.
ALLEN
How does the comparison of the stages of embryological development of different species help biologists to classify life? a. It helps in understanding the similarities between living species and extinct species.
b. It reveals anatomical similarities that are not always evident in fully formed organisms.
c. It reveals differences in the environmental conditions necessary for species survival.
d. It helps in understanding the different behavioral strategies in different individual organisms.
It reveals anatomical similarities that are not always evident in fully formed organisms. The comparison of the stages of embryological development across species helps biologists to classify life in a variety of ways.
By comparing the embryological development of different species, biologists can identify the commonalities in the developmental processes and draw conclusions about the evolutionary history of the species. These commonalities can be used to trace the evolutionary relationship between species, allowing biologists to classify species into more specific taxonomic categories. Additionally, comparing embryological development can uncover anatomical similarities not always visible in fully formed organisms, providing further insight into the evolutionary relationships between species. This information can be used to group species into more specific taxonomic categories, like genus, or even species. Furthermore, the comparison of embryological development between species can reveal differences in the environmental conditions necessary for species' survival, which can help inform conservation efforts. Finally, the comparison of embryological product between species can also reveal the different behavioural strategies used by individual organisms to survive in different conditions, providing further insight into the evolutionary development of different species.
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During glycolysis, one molecule of _____ is broken down into two molecules of pyruvate, driving the synthesis of ATP.
During glycolysis, one molecule of glucose is broken down into two molecules of pyruvate, driving the synthesis of ATP. Hence, the correct answer is glucose molecule.
What is synthesis of ATP?ATP is produced by the enzyme F1F0-ATP synthase. The enzyme's soluble, hydrophilic headpiece, F1, which is embedded in the membrane, synthesises ATP from adenosine diphosphate (ADP) and inorganic phosphate (Pi). This enzyme is the tiniest molecular machine ever discovered.
By adding a phosphorous group, ADP can be easily converted to ATP. This is referred to as phosphorylation. ATP is an important component of cellular metabolism. ATP synthesis by FoF1 consists of three steps: proton translocation through Fo, conformation transmission to F1, and -unit ATP synthesis. It is the most significant donor of free energy in any biological system in which it occurs. It is synthesised in eukaryotes during photosynthesis and respiration in both chloroplasts and mitochondria.
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substance or material that causes pollution.
Answer:
lead,carbon monoxide,nitrogen oxides,ground levels,particle pollution
structures containing dna only visible during mitosis and first seen in prophase
The structures containing DNA only visible during mitosis and first seen in prophase are called chromosomes.
Chromosomes are the condensed, highly coiled and visible structures that contain the genetic material (DNA) of a cell. During interphase, the normal non-dividing state of a cell, chromosomes are not visible because they are in a less condensed and more dispersed form called chromatin. However, during mitosis, the process of cell division, chromosomes become highly condensed and visible as distinct structures.
As mitosis progresses, the chromosomes move to the center of the cell and align along the equatorial plane in metaphase, then separate and move towards opposite poles of the cell in anaphase. Finally, in telophase, the chromosomes begin to uncoil and return to their chromatin form.
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What do ribosomes look like description?
Under an electron microscope, ribosomes are seen to be flattened and spherical in shape, with a diameter of 15 to 25 nm. There are two main ribonucleoprotein components in these complexes.
The smaller component ensures that the transfer RNA's three consecutive, in-frame base pair units known as codons, and the complementary triplet known as the anti-codon connect correctly (tRNA).
A sophisticated biological device, the ribosome. It is mostly composed of ribosomal RNA (rRNA), a specialized RNA, and dozens of different proteins. The large and small subunits of the ribosome, which are two distinct ribosomal components of varying sizes, are how the ribosomal proteins and rRNAs are organized.
The DNA sequence that specifies the placement of the amino acids in protein results in the production of a messenger RNA chain. Ribosomes bind messenger RNAs and utilize their sequences to decide how amino acids should be arranged to generate a particular protein.
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what is cell in biology explain briefly
Answer:
The Cell is the basic structural and functional unit of all living organisms. Each cell has the capacity to perform basic functions that are characteristics of all living forms
Explanation:
The cell has the capacity to replicate itself hence it is known as the building block of life. Each and every cell contains a fluid called cytoplasm.The Cytoplasm is enclosed by a membrane called plasma membrane or cell membrane. Inside cytoplasm there are certain specific components in it which are known as cell organelles. Each cell organelle performs special functions, such as making new material in the cell clearing up waste material from the cell and so on.Because of these organelles, a cell is able to live and perform all its functions. All the cells have the same organelles, no matter what their function is or what organisms they are found in. It is known that a single cell may constitute a whole organism like in amoeba,There are two types of cells:
The Prokaryotic cellsThe Eukaryotic cellsThe outer cell membrane, cell wall in plants, inside nucleus which is separated by a well nuclear membrane in the eukaryotic cell nucleus and cell membrane separated by a fluid called cytoplasm and various cell organelles which are responsible for performing certain specific functions to carry out life’s processes. These are endoplasmic reticulum, plastids in plant cells, Golgi apparatus, lysosomes, mitochondria, vacuoles.know more:The Cells were also observed under compound microscope with higher magnification by Anton Van Leeuwenhoek who concluded that the cells are alive they possess motility and cells were named animalcules. The Robert Brown in 1883provided the first insight to cell structure. He described the presence of nucleus present in the cells of orchids.The Various functions of cell are :
It provides support and structure.It facilitates growth mitosis.It allows transport of various substances.The Energy production.It aids in reproduction.what is the founder effect? a. sampling error that occurs during the establishment of a new population by a small number of migrants. b. strong natural selection acting on the founders of a new population because the environment they are now living in is so different from the environment they came from. c. a phenomenon named after william founder, who observed that top predators generally have low genetic diversity. d. rapid population growth following a bottleneck.
(a) sampling error that occurs during the establishment of a new population by a small number of migrants.
The founder effect is a type of random evolution that modifies the allelic frequency in a population. This results from sampling mistake when some individuals from an existing population split themselves and form their own population. Therefore, an is the appropriate choice.
what is founder effects?The founder effect, which occurs when a new population is founded by a very small number of people from a larger population, is referred to in population genetics as the loss of genetic variety. Ernst Mayr provided the first comprehensive explanation of it in 1942, drawing on earlier theoretical work by people like Sewall Wright.
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plpa the environmental factor that adversely affects plant growth most commonly is group of answer choices air pollution excess or deficiencies of water pesticide drift iron deficiency none of the others
Water deficiency in excess is the environmental condition that most frequently harms plant growth.
As a result of the sensitivity of the majority of crop plants to salinity, which is brought on by high salt concentrations in the soil, and the fact that more and more land is being affected by it every day, salinity is one of the harshest environmental factors limiting the productivity of crop plants.
Thought to have originated in East Africa, coffee rust, which is caused by Hemileia vastatrix, moved to Sri Lanka (then known as Ceylon) in the 1860s and severely damaged plantations, ultimately putting an end to production within 20 years (Talhinhas et al., 2017). These plant pathogens must spread to infect new hosts for epidemics of plant diseases to manifest. Pollen and seeds from infected plants, as well as soil, rain, water, animals, people, and machinery, can all transmit plant illnesses.
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if you were the evolutionary biologist in charge of a project to create a phylogenetic tree that better clarified the evolutionary relationships between the species listed in the accompanying figure, what would be a logical first step?
The first logical step would be to Evaluate evidence to determine the relationships of species D, E, and F if you were the evolutionary biologist in charge of a project to build a phylogenetic tree that better clarified the evolutionary relationships between the species listed in the accompanying figure.
To ascertain the relationships between species D, E, and F, we can assess the available evidence.
This is the best place to start because the third question's evaluation of DNA evidence over morphological evidence points to the basic concept of similarity between closely related species.
When assessing a phylogenetic relationship, we must proceed from most similar to least similar species and from phenotype to genotype.
The study of phylogenetic relationships examines how organisms in a species or population have developed relationships over time. These connections are found by comparing anatomical features or DNA, RNA, or protein sequences that are similar. Phylogenetics is significant because it improves our comprehension of how genes, genomes, species, and, more broadly, molecular sequences, evolve.
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The above question is incomplete. Check complete question below -
If you were the evolutionary biologist in charge of a project to create a phylogenetic tree that better clarified the evolutionary relationships between the species listed in the accompanying figure, what would be a logical first step? ( image is attached )
a) Analyze taxon G as it is the oldest existing species.
b) Compare DNA evidence for taxa B and C as they are the most closely related.
c) Investigate the genetic relationships between species A and G.
d) Evaluate evidence to determine the relationships of species D, E, and F.
e) x
