Explanation:
Oxygen cycle refers to the movement of oxygen through the atmosphere, biosphere and the lithosphere. T
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In this question about muscle cells and cells, the correct options are.
B.
c.
c.
a.
b.
c.
a.
d.
b.
d.
b.
How is muscle tissue made up?
Muscle tissue is formed by elongated cells with the ability to contract, which are called muscle fibers. These fibers have several contractile protein filaments, that is, with the ability to contract. Among them are actin and myosin filaments.
What is muscle tissue?
Muscle tissue is a tissue of mesodermal origin characterized by the presence of elongated cells, called muscle fibers or myocytes, with a cytoplasm rich in protein fibers, which give this tissue the ability to contract.
What are the main characteristics of muscle tissue?Among its main characteristics are:
excitabilitycontractilityextensibility and elasticity.Muscles represent 40% of body mass. Therefore, in many animals muscle tissue is the most abundant. Muscle tissue cells are elongated and are called muscle fibers or myocytes.
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when you send electrical impulses to one of your muscles, there is a certain level of stimulus where the muscle will first show a twitch. why don't you see a twitch before this?
A twitch occurs when one muscle fiber contracts in response to a command stimulus by the nervous system.
The time interval between the activation of a motor neuron and contraction of muscle is called the lag phase. In the duration of lag phase an action potential travels to the end of motor neuron .
This action potential release of acetylcholine and depolarization of the motor end plate. Muscle twitch has three phase latent period, a contraction phase, and a relaxation phase. A classified muscle response allows alteration in muscle tension. Twitches and spasms can be warning signs which shows the nerves that control your muscles.
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during what phase are chromatids stretched back out as chromatin
During Telophase chromatids are stretched back out as chromatin
What is Telophase ?The fifth and final stage of mitosis, known as telophase, is the division of the duplicated genetic material contained in a parent cell's nucleus into two identical daughter cells. Once the duplicated, paired chromosomes have been moved to the cell's poles or opposing sides, or segregated, telophase has begun.
In order to relax once more into a stretched-out chromatin structure, the chromosomes approach the opposing poles and start to decondense (unravel).New nuclear membranes envelop both sets of chromatids during telophase, and the chromosomes decondense into chromatin. Telophase is followed by cytokinesis, which involves the division of the cell's cytoplasm into two.Learn more about Telophase here:
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Which term best describes the smallest function unit of life?
- Atom
- Cell
-Tissue
-Organ
Mark all of the terms that relate to the structure of RNA.
a
thymine
b
double helix
c
ribonucleic acid
d
adenine
e
cytosine
f
single helix
g
guanine
h
uracil
i
hydrogen bonds
j
deoxyribonucleic acid
a red-eyed female fly was crossed with a white-eyed male fly. all the f1 offspring have red eyes. two of these red-eyed f1 generation flies were crossed to each other. the f2 generation included both red- and white-eyed flies. remarkably, all the white-eyed flies were male. what was the explanation for this result?
The answer for why all of the white-eyed flies are males is that a gene exists on the X chromosome.
What defines a generation?A generation is the collective term for all individuals who were born and are still alive at around the same period. The average time frame, commonly regarded to be between twenty and thirty decades, in which children are born, grow up, becoming adults, and start having children is another way to put it.
Why is it called the Silent Generation?The Silent Generation supported "working within the system," in contrast to the preceding generation, who had pushed for "changing the system." They achieved this by putting in long hours of work and gaining the reputation of being "quiet."
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not all individuals are identical in what? A. ecosystem, B. community, C. Organism, D. Populations
According to the research, the correct answer is option B. In a community not all individuals are identical.
What is a community?It is a group of populations of different individuals, who live in the same place or biotope in which they find the environmental circumstances to guarantee their survival.
In this sense, these organisms of different species coexist and interrelate in a geographical region, forming a trophic chain and competing for the prolongation of their species.
Therefore, we can conclude that according to the research, a community is established by the set of different individuals that live in the same habitat, thus the correct answer is option B.
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which type of chromosome mutation increases the amount of genetic material? a) deletion b) duplication c) inversion d) translocation e) transversion
Duplication is the chromosome mutation increases the amount of genetic material.
Duplication in the context of genomics refers to a type of mutation that produces one or more copies of a segment of DNA (which can be as small as a few bases to as large as a large chromosomal region). Duplication occurs in all organisms.
Duplications can arise from uneven crossovers that occur during meiosis between misaligned homologous chromosomes. The products of this recombination are duplications and mutual deletions at the exchange sites.
Chromosomal mutations are mutations involving long stretches of DNA. These mutations may include deletions, insertions, inversions, or translocations of DNA stretches or segments. In some cases, the deleted pieces attach to other chromosomes, destroying both the chromosome that lost the DNA and the one that gained it.
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the dermis is composed largely of multiple choice question. a) stratified columnar epithelium. b) dense regular connective tissue. c) stratified squamous epithelium. d) dense irregular connective tissue.
The dermis is composed largely of multiple choice question - stratified squamous epithelium.
There are three basic layers to the skin. The outer, avascular layer known as the epidermis is primarily made up of keratinocytes and keratinocyte remnants. The intermediate layer known as the dermis is home to the skin's blood vessels, nerves, and other supporting systems. Of the three layers, the hypodermis is the deepest.
What is Stratified columnar epithelium ?Column-shaped cells are organized in numerous layers to form the uncommon epithelial tissue known as stratified columnar epithelium. It is located in the male urethra, anus, pharynx, and conjunctiva.
ciliated columnar epithelium that is stratified. The lining of the foetal oesophagus is an example of an epithelium with many layers, the deeper cells of which are polyhedral in shape, and the surface cells of which are columnar with motile cilia.
What is Dense regular connective tissue ?Type I collagen fibers are the major component of dense regular connective tissue. It can be found in the body's ligaments, tendons, and aponeuroses, which all need a lot of tensile strength. The collagen fibers are aligned parallel to one another and closely spaced together.
What is stratified squamous epithelium ?Stratified squamous epithelium: This kind of epithelium typically serves as a barrier against water loss and/or the invasion of germs into the underlying tissue. Your skin's epidermis, or top layer, is made up of stratified squamous epithelial cells.
What is dense irregular connective tissue ?A form of dense connective tissue called dense irregular connective tissue lacks parallel bundles of extracellular fibers, particularly collagen fibers (as opposed to the dense regular connective tissue whose collagen fibers are arranged in a parallel fashion).
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exposing a protein to acid or heat will alter the three-dimensional structure of the protein. this process is called multiple choice transcription. translation. deamination. denaturation.
Exposing a protein to acid or heat will alter the three-dimensional structure of the protein. This process is called denaturation
What is Denaturation?
It is one of the phenomenons that results in the disturbance of stability and structure of the proteinThe stability and structure of protein depends on physical and chemical conditions.
Temperature and pH affect the stability to a great extent.Due to changes in temperature, pH or other chemical activities, hydrogen bonds present in the proteins get disturbed. This results in unfolding of globular proteins and uncoiling of the helix structure.The uncoiling of helix structure affects chemistry of proteins and they lose their biological activity. This phenomenon of losing their activity and uncoiling of helix structure due to physical or chemical changes is called denaturation of proteins.During denaturation of proteins, the secondary and tertiary structures get destroyed and only primary structure is retained.Learn more about Denaturation at Brainly.com https://brainly.com/question/12323414
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Describe as simply as you can the chemistry to electric process that occurs when dendrites receive a message from an axon and pass it down the neuron.
When dendrites receive a message from an axon and pass it down the neuron called as synapse
These chemicals are called as neurotransmitter and the process is called as neurotransmission and the space between the axon and the dendrites is called as synapse and when neuron communicate an electrical impulse trigger and release of neurotransmitter from the axon into the synapse and once a signals is received by the dendrites it then travels to the cell body and the cell body contain a specialized structure the axon hillock that integrates signals from multiple synapses and serves as junction between the cell body and an axon
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the continuity of life is based on heritable information in the form of dna . how does the process of mitosis faithfully parcel out exact copies of this heritable information in the production of genetically identical daughter cells?
Mitosis faithfully parcels out exact copies of this heritable information in the production of genetically identical daughter cells as The cell "replicates" its chromosomes by copying them.
Daughter cells that are genetically identical to the parent cells are produced through mitosis. The cell copies its chromosomes, or "replicates," and then divides them equally so that each daughter cell has a complete set.
Mitosis is a process by which more cells with the same genetic makeup as the parent cell. It is essential not only for the growth and development of our bodies but also for the development of embryos. Mitosis creates new cells and replaces old, lost, or damaged cells.
Each chromatid of a duplicated chromosome attaches to a microtubule on one of the mitotic spindles during mitosis. The chromatids are pulled toward the cell's poles during anaphase by mitotic spindles, resulting in two identical chromosomal sets at each pole.
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which of the following is not a function of meiosis? a.cause an organism to grow b.create genetic variability c.reduce the chromosome number in gametes d.produce gametes
The following is not a function of meiosis : b.)create genetic variability. Hence option c is correct.
What happens in meiosis?Type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells is called meiosis. This process produces egg and sperm cells for sexual reproduction.
Growth and division of cells occurs by mitosis and differentiation for specific cell types whereas genetic variations arise from mutations in which genetic material is rearranged as a cell gets ready to divide. Genetic variations that alter gene activity or protein function introduce different traits in an organism.
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a triplet base sequence on the template strand of dna reads att. what will be the corresponding mrna codon, trna anticodon, and amino acid coded for by this dna?
Reproduction 1:Question 1
A mutation that occurs in an organism that reproduces sexually
will most likely affect the traits of the offspring if the mutation
A mutation that occurs in an organism that reproduces sexually will most likely affect the traits of the offspring if the mutation alters the DNA in a gamete of a parent.
Any cell's DNA can be altered by other genetic flaws, ultraviolet radiation, environmental exposure to specific chemicals, replication errors, and other genetic insults.
It is possible for an organism's progeny to inherit a mutation if it develops in a germ-line cell (a cell that will develop into gametes, such as egg or sperm) or in a cell that will produce them. Accordingly, the mutation will exist in each and every cell of the growing embryo.
Somatic mutations differ from germ-line mutations in that they take place in cells from different parts of an organism's body.
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what was the purpose of the water-filled transperent plastic tank in the chollera photosyntegis experiments?
The chollera photosynthesis system's water-filled translucent plastic tank. A water tank is placed in the path of the light to dissipate heat.
How are plastics made?Through the polymerization and polycondensation process, mineral wealth like cellulose, coal, nat gas, salt, and petroleum products are used to create polymers. Plastics are created using natural, organic materials including cotton, coal, nat gas, salt, or, of course, crude oil.
What does the word "plastic" actually mean?A group of materials known as plastics can be moulded when they're soft and afterwards hardened to keep the intended shape. These materials may be created artificially or organically. Plastics are made of polymers. A polymer is a substance made up of several repeating units.
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scientists develop models to help them understand the natural world
Scientists make definite assumptions to maximize this aim of understanding natural world. It is presumed by scientists that:
A. Through a organised study, nature can be understood.
B. Revisions are something that scientific thoughts are open to.
C. The test of time is something that shows scientific ideas withstand to.
Laws of nature are explained as scientific laws.
Nature is thought by scientists as a single system that is handled by natural laws. Scientists tries to extend their understanding of the natural world by discovering natural laws. Scientific laws are the result of laws of nature.
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Which axis indirectly shows the relative amount of dna per cell? by what relationship?.
The x-axis indirectly shows the relative amount of DNA per cell. As the DNA was stained, there is a relationship between fluorescence and DNA content.
The x-axis does not show the relative amount of DNA per cell directly. It can be seen through a special type of graph known as a histogram. If we look at it, peaks and dips can be seen as similar to fluorescence.
This indirectly shows the relative amount of DNA per cell. This confirms the relationship between the fluorescence and the relative amount of DNA in the cell.
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which of these is a feature of most shield volcanoes? broad base, steep sides, violent eruptions, or thick lava?
Answer: Broad Base
Explanation:
a colleague of yours suggests that your strategy is not reasonable - you shouldn't try to express the gene all the time. why might it be disadvantageous for cells to produce the protein all the time?
In connection with the function of mitochondria as energy producers, these organelles are often found in cells that require high energy, such as heart cells that are always working all the time without rest and muscle cells that are actively contracting.
Function of protein in the body?Protein is one of three types of macronutrients that the body needs. This nutrient consists of several chemical elements such as carbon (C), hydrogen (H), oxygen (O), and nitrogen (N). Other elements such as phosphorus and sulfur also sometimes take part in the process of protein formation. Protein can even help repair damaged cell tissue so that it can return to work optimally. Protein is also a nutrient found throughout the body including hair, muscles, bones and skin. In fact, 20% of the human body is made up of protein. Here are things you need to know about the function of protein for the body:
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As you drive along a roadside you and your friend notice a dead deer that apparently was struck by a car. your friend comments that she has never seen a deer so rigid. as a student in forensics how would you describe the rod of the deer
The bacteria in the body feed on the tissue when an organism dies, releasing CO2 into the body is how you should explain to your friend as a forensic student.
Because the abdomen housed the stomach and several visceral organs, it looked to be larger. Because the dead deer was left where it was after being struck by a car for several hours or even days without anyone clearing it, it appeared to be much larger than usual when it was discovered. The internal organs of the dead deer also grew larger than usual as a result of the sun's heat heating them up.
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Question correction:
As you drive along the road, you and your friend notice a dead deer that apparently was struck by a car. Your friend comments that she has never see such a fat deer. As a student of forensic, how would you explain to your friend why the abdominal region of the dead deer was so large?
What adaptations of the wild yak enable it to survive in the alpine biome? (site 1)
On the analysis of the body structure of wild yak, we got that dense and wooly coats, specially amended feet, horns to dig for food are the major reasons due to that wild yak able to survive in the alpine biome.
The alpine biome is one of coldest biomes on the planet, it is generally because of the high altitudes. The summer temperature varies between -12 to 10 degree Celsius, and the average precipitation in biome is about 30 cm in a year.
The animals which lives in this region, adapt to the cold by simply migrating to warmer regions, hibernating, or insulating their bodies with the help of the fat and fur layers, their bodies seems to possess shorter tails, legs, and ears, in order to minimize the loss of heat.
Hence, the reason behind the wild yak able to survive in the alpine biome is its dense and wooly coats, specially amended feet, horns to dig for food.
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why does crossing over complicate the picture of how many chromosomes are inherited from each grandparent
Due to genetic variety brought on by meiosis
In meiosis I, crossover takes place during prophase I. It entails the exchange of genes across homologous non-sister chromatids, enabling the admixture of latest , recombinant chromosomes containing both mother and paternal genetic material.
What about chromosomes?Long segments of DNA are carried by chromosomes, which are organelles which can be found in the nucleus of cells.The substance that houses genes is known as DNA.It is the foundation for the human body.Additionally, proteins found in chromosomes aid within the acceptable structure of DNA.The term "autosomes" refers to the first 22 pairs of chromosomes.The sex chromosomes, which structure the 23rd pair of chromosomes, determine whether a private will be born male or female.The highest level of DNA and protein organization is seen in chromosomes.Chromosomes' primary job is to carry DNA and pass genetic material from one generation to the next.Cell division involves the critical function of chromosomes.They guard against tangles and damage to the DNA.Another kind of aneuploidy is monosomy, which is the loss of one chromosome in cells.Greek is that the language of number one and monosomy refers to a condition during which cells contain only one copy of a certain chromosome rather than the usual two.Turner syndrome sometimes mentioned as monosomy X could also be a disorder brought on by monosomy.There are billions of cells in your body, but they're too small to watch without a powerful microscope.Chromosomes, which are strands that resemble threads and carry hundreds or even thousands of genes, are found inside the majority of those cells.Physical characteristics a bit like the color of your eyes are determined by genes.Learn more about chromosomes here:
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proofreading removes approximately 99% of mismatches before dna replication moves on. how many mutations would you expect to see in the human genome if mismatches can be repaired by proofreading?
6,000. The majority of the replicative polymerases' proofreading activity is in charge of removing incorrectly incorporated nucleotides from the primer terminus prior to further primer extension.
What about DNA?The molecule found inside cells that carries the genetic material necessary for an organism to develop and perform .This data can be passed from one generation to the next thanks to DNA molecules.Humans and nearly all other species carry their genetic information in DNA, also referred to as deoxyribonucleic acid.The DNA of a privateer can be found in almost all of their cells.Nucleotides are chemical building units that structure DNA.A phosphate group, a sugar group, and one among four different nitrogen bases make up these building components.Nucleotides are joined together into chains, with the phosphate and sugar groups switching places, to make strands of DNA.It contains information needed to make proteins, which are other big molecules.These instructions are dispersed throughout 46 lengthy structures called chromosomes that are found inside each of your cells.Numerous smaller pieces of DNA, referred to as genes, structure these chromosomes.Today, DNA has three separate purposes: genetic, immunological, and structural, all of which differ greatly from each other and depend in different ways on the bases and the sugar phosphate backbone.DNA encodes the knowledge required to produce proteins, which is the main connection between DNA and proteins.DNA, however, isn't a protein.Long strands of nucleotides structure DNA.Learn more about DNA here:
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explain how erosion and deposition of a river's material over time, as the water flows down through, made the old stream look the way it does.
Erosion and deposition occurs by slow flowing rivers creates broad floodplains and meanders.
How do erosion and deposition occur?Rivers and bourn deposit sediment where the speed of the water current decreases. In rivers, toppling occurs along the inside bank of the river bend. This "area" is where water flows slower while erosion happens along the outside bank of the bend, where the water flows a lot faster. Most river erosion happens close to the mouth of a river. On a river bend, the longest sharp side has slower moving water. Here deposits build up. On the narrowest sharpest side of the curve, there is faster-moving water so this side tends to crumble away mostly.
So we can conclude that land use and stream oversight can also trigger erosion responses.
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Social sciences are
a.
the observable facts or events that involve human society.
b.
how people relate to one another and influence each other’s behavior.
c.
the hidden meanings behind human actions.
d.
the disciplines that study human social behavior or institutions and functions of human society in a scientific manner.
Social sciences are the disciplines that study human social behavior or institutions and functions of human society in a scientific manner.
what are the application studying social science ?Social science is the field of study where the paragliding word concerned with occurrences created by humans and opposed to traditional sciences.
under this sciences anthropology, evolutionary psychology is often categorized fall under that same group.
It can be used to involve in engineering field as either a decision science or other specialty with a technical bent.
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People who embrace _________ use biological factors to justify inequalities between racial and ethnic groups.
People who embrace racism use biological factors to justify inequalities between racial as well as ethnic groups.
A viewpoint that asserts that racial distinctions result in a specific race's inherent superiority and that race is the main factor influencing human characteristics and abilities. Racism is any form of prejudice based on characteristics such as race, body color, religion, culture, etc., according to the social studies discipline.
Racists frequently discriminate against individuals and blame their prejudice on biological characteristics, like their birth into a low-caste household. Racism seems to remain a constant in practically every civilization, despite the fact that many individuals throughout the world are battling against those who embrace it.
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2. Some students used these dialysis tubing bags as models of human red blood cells. The students observed the changes in the bags when they were placed in different solutions and recorded the mass of each setup in the table below. (0 R Dialysis tubing Which statement best describes the role of the cell membrane in this model?
The cell membrane allows the solute to enter the cell which causes the cell to shrink is the statement that best describes the role of the cell membrane in this model.
The semipermeable cell membrane provides for the selective entry and exit of solutes, water, salts, and other substances. The concentration of the solute inside the cell was raised when it entered the cell membrane.
Water began to migrate outside of the cell membrane as the water gradient outside the cell wall diminished, which caused the cell to contract.
Cell membranes act as boundaries and checkpoints. Because of their semi-permeability, some molecules can diffuse across the lipid bilayer but not others. Gases like oxygen and carbon dioxide, as well as small hydrophobic compounds, quickly traverse membranes.
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. the medium ground finch (geospiza fortis) and the cactus finch (geospiza scandens) are similar in size and appearance. a. which physical trait varies the most between these two species? b. the medium ground finch and the cactus finch are adapted to consume different types of foods. can you think of a situation in which the medium ground finches would have a survival advantage over the cactus finches? a disadvantage?
Cactus finches have longer beaks than medium ground finches, which is the physical difference between these two species that differs the most.
What species of ground finch are associated to huge cacti?Taxonomy. Darwin's finches, a group of closely related birds that developed on the Galápagos Islands, includes the Espanola cactus finch. The Tiaras grassquits, which may be found in South America and the Caribbean, are linked to the group.
What became of the medium-sized finches?Due of low population sizes, there has been an inbreeding depression in the medium ground finch population. When fitness declines as a result of people mating with genetic relatives, it is known as inbreeding depression. Normal outcomes include a decrease in heterozygosity and a loss of genetic diversity.
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which of the following statements about the dna double helix is true? multiple choice complementary base pairing across the double helix allows information to be transferred via dna replication. complementary base pairing allows the production of a dna strand that is identical to its template strand (or parts of the template strand) via dna replication. the 3' end of the double helix terminates in a nitrogenous base on the 3' carbon. it takes large amounts of energy to separate the double helix because it is held together via covalent bonds. the 5' end of the double helix terminates in a nitrogenous base on the 5' carbon.
The statement "Complementary base pairing across the double helix allows information to be transferred via DNA replication." is true about the DNA double helix.
The template strand serves as the basis for the new strand.Using a template strand, the enzyme DNA polymerase aids in the formation of new strands.The parent molecule that is already present unearths the bases that are present during the DNA replication process.The arrival of DNA polymerase results in the formation of complementary bases on the new strand.The ester bonds between the old and new strands, respectively, between 5' phosphate and 3' OH, are also helped by DNA polymerase.Know more about DNA replication here: https://brainly.com/question/21265857
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