under the Linnaeus system of classification, organisms are grouped based on ____ and _____.

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Answer 1

Under the Linnaeus system of classification, organisms are grouped based on -Name for all species.

     -Grouping species into categories.

The Linnaean system is significant because it encouraged the use of binomial nomenclature to distinguish between species. Once the approach was accepted, scientists could communicate without using deceptive common names.

A person was considered a member of the Homo sapiens species regardless of the language they spoke. Living things are classified into groups based on their structure and characteristics. This system was developed in the seventeenth century by Carl Linnaeus. The classification of species allows living things to be divided into more specialised and smaller groups.

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Related Questions

in what way do megasporangia differ from microsporangia?

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Megasporangia and microsporangia are specialized structures in plants that are responsible for the production and dispersal of gametophytes, which are the cells that will eventually develop into gametes (sperm and egg cells).

Megaspores, the bigger of the two spore sizes produced by the plant, are produced by megasporangia, also referred to as megasporocytes. The female gametophytes that will eventually produce the egg cells are formed by the megaspores.

Microspores, the smaller of the two spore types produced by the plant, are formed by microsporangia, also referred to as microsporocytes. The sperm cells will eventually be produced by the male gametophytes, which are transformed into microspores.

Megasporangia and microsporangia typically differ in size, shape, and position inside the plant in terms of anatomy and structure. Compared to microsporangia, which are frequently smaller and found in clusters, megasporangia are typically larger and more isolated.

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what happens with gametes to create chromosomal abnormalities?

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Gametes are reproductive cells that contain half the genetic material of an individual. When two gametes combine during fertilization, the resulting embryo will have a full set of chromosomes.

What is genetic?

Genetics is the study of how traits and characteristics are passed down from parents to offspring. It is a branch of biology that focuses on the transmission of genetic information from one generation to the next. This information is stored in the form of deoxyribonucleic acid (DNA), which is a complex molecule made up of four nucleotides.

Chromosomal abnormalities can occur when there is an alteration in the number or structure of the chromosomes. This can happen when the gametes contain an incorrect number of chromosomes or if the chromosomes have been damaged in some way. These abnormalities can be caused by external factors such as radiation or other environmental insults, or they can occur spontaneously. When a gamete contains an incorrect number of chromosomes, it is known as aneuploidy. Examples of aneuploidy include trisomy (an extra chromosome), monosomy (a missing chromosome), and polyploidy (more than two sets of chromosomes). Structural chromosomal abnormalities occur when a piece of a chromosome is missing, duplicated, inverted, or translocated. These abnormalities can be caused by errors in the processes of gamete formation or by external factors such as radiation or drugs.

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many proteins in the cytosol are ________ that accelerate metabolic reactions.

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The cytosol contains several proteins that work as enzymes to quicken metabolic processes.

The chemical reactions, or metabolism, of our bodies are sped up by proteins known as enzymes. Although certain chemicals are broken down, others are generated. Enzymes (and other catalysts) function by reducing the activation energy and thereby increasing the rate of reaction. The increasing pace occurs in both the forward and reverse directions at the same rate because both directions must pass through the same transition stage. By affixing to their substrates to form enzyme-substrate complexes, enzymes catalyse chemical processes (ES). The substrate binds to the enzyme at a specific location called the active site. While the substrate is still affixed to the active site, the product of the reaction is created and subsequently released from the enzyme.

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why is heat shock important in bacterial transformation?

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DNA is more easily able to enter bacterial cells as a result of the heat shock treatment. Recovery The broth is combined with the cell suspension, and the bacteria are then allowed to rest for 30 minutes at 37°C.

During this time of recovery, the bacteria can repair their cell walls and express the gene for antibiotic resistance.

The heat shock method of converting plasmid DNA into E. coli is a fundamental molecular biology technique. It entails ligating a foreign plasmid or other product inside the bacteria. This movie explains the traditional process of transformation using easily accessible Genlantis bacteria with chemical capabilities. After a brief incubation in ice, a mixture of bacteria and DNA with chemical capabilities is heated to 42 degrees C for 45 seconds.

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Why is the phospholipid bilayer an effective barrier to hydrophilic or polar molecules?

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The phospholipid bilayer's efficiency as a hydrophilic or polar molecular barrier is the cause

The phospholipid bilayer is a thin, flexible barrier that encloses the contents of a cell and separates it from the surrounding environment. It is composed of a double layer of phospholipid molecules, with the hydrophobic tails oriented inward and the hydrophilic heads oriented outward. This unique structure is what makes the phospholipid bilayer an effective barrier to hydrophilic or polar molecules.

The hydrophobic tails of the phospholipids create a nonpolar, water-repelling environment that is impermeable to polar or charged molecules. This is because these molecules are unable to interact with the hydrophobic interior of the membrane, which is energetically unfavorable. As a result, hydrophilic or polar molecules are unable to pass through the membrane without the help of specialized membrane proteins, such as transporters or channels.

Furthermore, the polar head groups of the phospholipids create an additional barrier to hydrophilic or polar molecules. The heads of the phospholipids face the aqueous environment on either side of the membrane, and the charged or polar nature of hydrophilic molecules is not compatible with this environment.

In summary, the phospholipid bilayer is an effective barrier to hydrophilic or polar molecules due to the hydrophobic tails of the phospholipids creating a nonpolar, water-repelling interior, and the polar head groups of the phospholipids facing the aqueous environment on either side of the membrane. This selective permeability is essential for maintaining the integrity of the cell and regulating the flow of materials in and out of the cell.

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a substance moving from outside the cell into the cytoplasm must pass through __________.

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The answer is: the plasma membrane

A substance moving from outside the cell into the cytoplasm must pass through _____. the plasma membrane.

Glycerol
A fat molecule is composed of two types of smaller molecules: ___ and fatty acids.

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A glycerol backbone and three fatty acid tails make up the two types of components that make up a fat molecule. A fatty acid is made up of a long hydrocarbon chain connected to a carboxyl group, whereas glycerol is a tiny chemical molecule containing three hydroxyl (OH) groups.

Natural fatty acids between 4 and 28 have an unbranched chain with an even number of carbon atoms in the majority of cases. Fatty acids can account for as much as 70% of the total weight of the lipids in some species, such as microalgae. In other species, fatty acids, such as triglycerides, phospholipids, and cholesteryl esters, are not present in their purest form. In all of these forms, fatty acids are vital cellular building components and one of the main nutritional sources of energy for animals.

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Schwann cells are functionally similar to ________

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Answer:

oligodendrocytes of the central nervous system (CNS)

Explanation:

what can be inferred from observed similarities in the forelimbs of humans, dogs and bats?

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From the similarities observed in the forelimbs of humans, dogs and bats, we can conclude that these organisms share a common ancestor.

What is common ancestry and how is it determined?

An ancestor shared by two or more descendants is a common ancestor. Common ancestry of two biological siblings includes parents and grandparents. The common ancestors of coyotes and wolves include the first dogs and the first mammals. Common ancestry refers to the fact that different lineages share the same lineage.

Do all humans have a common ancestor?

They point out that all humans living today inherited mitochondrial DNA from a common ancestor, the so-called mitochondrial Eve, but this represents only a tiny fraction of our total genetic material. 

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one result of the ability of organisms to detect and appropriately respond to stimuli is (a) Excretion. (b) Sensitivity. (c) Nutrition. (d) Irritability.

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One result of the ability of organisms to detect and appropriately respond to stimuli is sensitivity.

Define the term stimulus-induced response.

Any procedure that causes a cell or organism to change in state or activity in response to a stimulus (in terms of movement, secretion, enzyme synthesis, gene expression, etc.).

Sensitivity is the capacity of an organism or organ to recognize external stimuli and respond accordingly (excitability). Animals react to a variety of stimuli. For instance, some plants even respond to touch and even bend toward a light source . Even very little bacteria can move in response to chemicals or light (a process known as chemotaxis) (phototaxis).

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The biological species concept is inadequate for groupingA) plants.B) parasites.C) asexual organisms.D) animals that migrate.E) sympatric populations

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The biological species concept is inadequate for grouping is sympatric populations. The concepts of cohesiveness and recognition were used by biologists to develop Mayr's concept.

Numerous attempts at classifying species have been attempted by biologists and taxonomists, starting with morphology and working towards genetics. Early taxonomists, such as Linnaeus, were forced to explain what they saw, which eventually led to the concept of typological or morphological species. Although it is difficult or impossible to produce proof for this and other species notions, Ernst Mayr emphasized reproductive isolation.

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Bacteria comes in different shapes. How can this be used to identify the source of an infection

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The shape of a bacterium can provide important clues about the source of an infection. Different bacterial species have distinct shapes, which can help identify them and pinpoint the source of the infection. The size and arrangement of the bacteria can also be used to help identify them.

By examining the shape and size of the bacteria causing an infection, medical professionals can sometimes determine the type of bacteria involved and the most appropriate treatment. For example, certain antibiotics may be more effective against gram-positive cocci (spherical bacteria that have a thick peptidoglycan cell wall) than against gram-negative bacilli (rod-shaped bacteria that have a thinner peptidoglycan cell wall as well as an outer membrane).

Additionally, knowing the shape of the bacteria can sometimes help identify the source of the infection, such as whether it came from contaminated food, water, or a person's own microbiota.

It is important to note that identifying the source of an infection based on the shape of the bacteria is just one aspect of a comprehensive diagnosis. Other factors, such as the symptoms, location of the infection, and results of diagnostic tests, must also be taken into account to determine the most effective treatment.

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Muscles are not likely to tear from their bones because perforating fibers of collagen attach the tendons and periosteum to the cortical surfaces of bone
True or False

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The statement is true. Muscles are attached to bones through tendons, which are composed of dense regular connective tissue made primarily of collagen fibers.

The tendons attach to the periosteum, which is the outer layer of bone, and the perforating fibers of collagen attach the tendons and periosteum to the cortical surfaces of the bone.

The perforating fibers, also called Sharpey's fibers, are bundles of collagen fibers that extend from the periosteum into the cortical bone. They anchor the tendons to the bone and provide a strong attachment that resists tearing and pulling forces.

When a muscle contracts, it exerts force on the tendon, which in turn pulls on the bone to produce movement. The strong attachment between the tendon and bone provided by the perforating fibers is crucial for allowing this movement to occur without tearing the muscle away from the bone.

In summary, the perforating fibers of collagen fibers that attach tendons and periosteum to the cortical surfaces of bone play an important role in preventing muscles from tearing away from their attachment points.

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What is the name of the 5 carbon sugar in RNA?

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RNA (ribonucleic acid) contains the five-carbon sugar ribose, also known as D-ribose, which alternates with phosphate groups to create the "backbone" of the RNA polymer.

What is RNA?

A polymeric molecule called ribonucleic acid (RNA) is crucial for many biological processes, including the coding, decoding, control, and expression of genes. RNA and deoxyribonucleic acid are examples of nucleic acids (DNA). Along with lipids, proteins, and carbohydrates, nucleic acids are one of the four fundamental macromolecules needed for all recognised forms of life. Unlike DNA, which is a paired double strand, RNA is a single strand that is folded over on itself in nature. Like DNA, RNA is made up of a series of nucleotides. Using the nitrogenous bases guanine, uracil, adenine, and cytosine, represented by the letters G, U, A, and C, messenger RNA (mRNA) is used by cellular organisms to transmit genetic information that instructs the creation of particular proteins. Many viruses employ RNA to encrypt their genetic information.

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Determine weather the body plans of the animals display radial or bilateral symmetry.

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The body plans of the animals display radial or bilateral symmetry and they include:

Butterfly and fish - bilateral symmetryStarfish, buttercup - radial symmetry.

What is Radial symmetry?

This is referred to as the type of symmetry which occurs when any plane passing through the central axis divides the body of an organism into two equal halves.

Bilateral symmetry on the other hand is a situation in which similar anatomical parts are arranged on opposite sides of a median axis so that one and only one plane can divide the individual into essentially identical halves.

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7. in pea plants, round seeds (r) are dominant to wrinkled seeds (r), and yellow seeds (y) are dominant to green seeds (y). if you were to cross a rryy plant with a rryy plant, what proportion of the offspring would have wrinkled, yellow seeds? what proportion would have round, green seeds?

Answers

Round and yellow pea seeds are produced as a result of a cross between certain round, green-seeded peas and yellow, wrinkled peas. A. RY, rY, Ry, ry.

The haploid-numbered reproductive or sex cells are known as gametes. In every creature, gametes only contain one copy of each gene or chromosome. Unlike the male gamete, which is known as sperm or pollen, the male gamete is known as an egg or ovum.

The genotype of the heterozygous plant in this instance is RrYy. There would be one copy of each gene in each gamete. A dominant R and a dominant Y allele, as well as a recessive R and a recessive Y allele, are present in the gametes. Each one generates 25% of RY, Ry, rY, and ry.

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imagine that in the future we find unambiguous evidence for microbial life on mars. how could we know that this life is of independent origin? in other words, what are some properties that could indicate that this life originated on mars and not someplace else in the solar system (like earth)? select all that apply.

Answers

There are several properties that could indicate that microbial life found on Mars is of independent origin and not from Earth. These include:

1. The genetic makeup of the Martian microbes is different from that of known Earth organisms. If the Martian microbes have a different DNA or RNA sequence, amino acid composition, or other genetic characteristics from Earth life, this would suggest independent origins.

2.The Martian microbes use a different set of biochemical pathways than known Earth organisms. If the Martian microbes use different enzymes, metabolic pathways, or other biochemical processes than Earth life, this would suggest independent origins.

3.The Martian microbes are adapted to the Martian environment in ways that are different from known Earth organisms. If the Martian microbes have specific adaptations to the Martian climate, geology, or other features that are not seen in Earth life, this would suggest independent origins.

4.The Martian microbes are found in locations that are physically isolated from Earth. If the Martian microbes are found in regions of Mars that are geographically or geologically isolated from Earth (such as deep subsurface environments), this would suggest independent origins.

5.The Martian microbes have a fossil record that predates the earliest evidence of life on Earth. If the Martian microbes have a fossil record that dates back further than any known fossils on Earth, this would suggest independent origins.

6.The Martian microbes are phylogenetically distinct from Earth organisms. If the Martian microbes form a distinct branch on the tree of life, with no close evolutionary relationship to Earth life, this would suggest independent origins.

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What are the small openings in the leaves called?

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Tiny openings in leaves called stomata. Guard cells control the opening and closing of stomata. Plants release water vapor into the atmosphere when stomata open to allow gases to pass over the leaf surface.

What are stomata and their functions?

Stomata are epithelial cellular structures in tree leaves and needles that support plant growth and exchange carbon dioxide and water with the environment.

How do stomata open and close?

It is surrounded by two guard cells that control the opening and closing of the stomata. Stomata are open during the day for gas exchange and release of water vapor during transpiration. Stomata open and close due to changes in the turgor pressure of guard cells.

Why do plants need stomata?

This evolutionary innovation is so central to plant identity that nearly all land plants use the same stomata to take in carbon dioxide and release oxygen. Stomata are very small, microscopic, and important for photosynthesis.

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homeowners can reduce their ecological footprint through conservation landscaping techniques. describe how one conservation landscaping technique can reduce home electricity consumption during cold winters.

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Add soil amendments or mulch to landscaped areas to prevent evaporation water loss from the soils around trees as well as other landscaped vegetation helps in reducing the home electricity consumption during cold winters.

Explain about the conservation landscaping technique.

A strategically positioned tree, bush, or vine can serve as a windbreak, provide efficient shade, and lower your energy costs.

Trees that are strategically placed can reduce energy use in ordinary homes by up to 25%.This solar heat gain can be decreased by including shade from landscaping components. As much as 6° F can be deducted from the ambient air temperature by trees' shading combined evapotranspiration (a process through which a plant continuously moves as well as releases water vapour).

Thus, add soil amendments or mulch to landscaped areas to prevent evaporation water loss from the soils around trees as well as other landscaped vegetation helps in reducing the home electricity consumption during cold winters.

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a sample of chloroplasts is illuminated until the calvin cycle intermediates reach their steady state levels, and the light is then turned off. how do the levels of ribulose-bis- phosphate and 3-phosphoglycerate change with time after the light is turned off? briefly explain your reasoning

Answers

After the light is turned off in a sample of illuminated chloroplasts, the levels of ribulose-bis-phosphate and 3-phosphoglycerate will decrease over time.

This is because during illumination, the light-dependent reactions of photosynthesis generate ATP and NADPH, which are used by the light-independent Calvin cycle to convert carbon dioxide into organic molecules, such as ribulose-bis-phosphate and 3-phosphoglycerate. However, once the light is turned off, the ATP and NADPH are no longer being produced, and so the Calvin cycle cannot continue to synthesize these organic molecules at the same rate. As a result, the levels of ribulose-bis-phosphate and 3-phosphoglycerate will gradually decrease as they are used up in other metabolic processes or are converted into other molecules. The rate of this decrease will depend on factors such as the initial levels of these intermediates, the metabolic demands of the cell, and the presence of other regulatory mechanisms.

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when a phenotype seemingly has a advatnage for an organism, what might happen to the frequency of the allele

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If a phenotype seemingly has an advantage for an organism, it is likely that the frequency of the corresponding allele will increase over time.

This is because organisms with the advantageous phenotype are more likely to survive and reproduce, passing the advantageous allele to their offspring. Over many generations, this process of natural selection can lead to the increase in frequency of the advantageous allele in the population, as individuals with the allele have a greater likelihood of passing it on to their offspring.

This can eventually result in the fixation of the advantageous allele, meaning that it becomes the only allele present at the corresponding gene locus in the population.

However, the rate and extent of the increase in the frequency of the advantageous allele will depend on various factors, such as the degree of advantage conferred by the allele, the population size, the mutation rate, the genetic drift, and the degree of gene flow between populations. These factors can influence the speed and direction of evolutionary change in a population, shaping the genetic diversity and adaptation of organisms over time.

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What is the stomatal pore flanked by?

Answers

guard cells flank the stomatal pore and can be easily identified

What are 2 physical, behavioral, and unique adaptations of giraffes and how do those adaptations help giraffes survive and/or reproduce?

Answers

Answer:

Giraffes are known for their long necks, which are one of their most distinctive adaptations. Their long necks help them reach leaves and other food sources high up in trees, allowing them to feed on vegetation that is unavailable to other grazing animals. This adaptation helps giraffes obtain sufficient sustenance and allows them to live in areas where other herbivores cannot.

Another important adaptation of giraffes is their speed and agility. Giraffes are known for their quick movements and can run at speeds of up to 35 miles per hour. This allows them to escape from predators and ensures their survival in the African savanna. The giraffe's height and long legs also help it to keep a lookout for predators and detect any danger from a distance.

In terms of reproductive adaptations, giraffes have unique, prehensile tongues that can reach up to 45 cm long. This allows them to easily grasp leaves, fruits, and other food sources, but it also makes it easier for them to mate and feed their young. Additionally, giraffes have a short gestation period compared to other animals of similar size, which allows them to have more offspring over the course of their lives, increasing their chances of survival as a species.

In conclusion, the physical adaptations of a long neck and speed and agility, as well as behavioral adaptations such as their prehensile tongues, have allowed giraffes to survive and reproduce successfully in their African habitats.

Explanation:

All of the following are components of the plasma membrane EXCEPT:
1. Cholesterol
2. Proteins
3. Phospholipids
4. Fiber

Answers

Answer:

Fiber

Explanation:

Everything else are components of the plasma membrane.

I hope this helps... :)

True or false? Genetic drift is more significant in small populations.

Answers

True. Smaller populations experience greater genetic drift.

Owing to stochastic sampling error, smaller populations typically lose their genetic diversity less quickly than larger populations (i.e., genetic drift). The reason for this is that tiny populations make it more likely for some gene variants to be lost through random chance. A mutation's frequency in a population may shift randomly from one generation to the next due to the population's limited size. This phenomenon is known as genetic drift. Small, reproductively phenotypic traits may experience rapid changes in gene frequencies due to unique conditions that are completely unrelated to mutation and natural selection. Only random variables can explain these fluctuations.

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Structures that have different mature forms but develop from the same embryonic tissue are? a. vestigial organs. b. adaptations. c. homologous structures. d. fossils.

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Homologous structures are ones that grow from the same embryonic tissue but have different mature shapes.

Homologous structures are believed to have evolved from a common ancestor and share a similar underlying anatomy, even though they may have different functions in different species. Examples of homologous structures include the wings of bats, birds, and insects, as well as the arms of humans and the front legs of horses. The study of homologous structures is important for understanding the evolutionary relationships between different species and can provide insights into the processes of evolution and adaptation. The presence of homologous structures is also evidence for the theory of evolution and supports the idea that all species are related through common ancestry.

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which type of grain contains all the essential parts of the entire grain seed in its original proportions?

Answers

All three kernel components are present in whole grains. The bran and germ are typically removed during refining, leaving only the endosperm. A grain loses roughly 25% of its protein when the bran and germ are removed, and at least seventeen essential elements are also significantly diminished.

Dry grains last longer after harvest than other staples like tubers and starchy fruits (like plantains, breadfruit, etc). (sweet potatoes, cassava, and more). Grains may be mechanically harvested, transported by train or ship, kept for extended periods of time in silos, and processed or pressed to produce flour or oil because to their sturdiness. With crops like maize, rice, soybeans, wheat, and other grains, the grain market is a significant global market for commodities.

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what is the layer that is located deep to the dermis and is not part of the skin?

Answers

The subcutaneous tissue, also known as the hypodermis or subcutis, is the skin's deepest layer. Although it isn't a true component of the skin, it aids in holding the skin to the bones and muscles.

Subcutaneous tissue, also known as the hypodermis or subcutis, is the layer of skin that is the thickest. Despite the fact that it isn't technically a component of the skin, it aids in holding the skin to the bones and muscles. The skin's nerves and blood supply are also provided by subcutaneous tissue. Fat, connective tissue, and elastin, an elastic protein that aids tissues in regaining their original shape after stretching, make up the majority of the hypodermis. The body is well insulated by the large levels of fat, which helps keep a person from overheating. The fat layer protects by cushioning the bones and muscles.

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Which of the following mRNA modifications are common in human cells? a) alternative splicing b) intron removal and exon joining c) 3 poly-A tail addition d) 5' cap addition e 5' cap addition, intron removal and exon joining, 3 poly-A tail addition and alternative el splicing

Answers

The most accurate answer is (e) 5' cap addition, intron removal and exon joining, 3 poly-A tail addition, and alternative splicing.

These four types of modifications are common in human cells and play a crucial role in regulating gene expression.

The 5' cap addition involves the addition of a modified guanine nucleotide to the 5' end of mRNA, which protects the mRNA from degradation and assists in translation initiation. Intron removal and exon joining is a process in which non-coding regions (introns) of pre-mRNA are removed and the remaining coding regions (exons) are joined together to form mature mRNA. The 3' poly-A tail addition involves the addition of a long chain of adenine nucleotides to the 3' end of mRNA, which plays a role in mRNA stability and nuclear export.

Alternative splicing is a process in which different combinations of exons within a pre-mRNA molecule are spliced together to generate multiple mRNA isoforms, leading to the production of multiple protein isoforms from a single gene. Alternative splicing is a common mechanism used to generate protein diversity in eukaryotes, and it is estimated that over 90% of human genes undergo alternative splicing.

In summary, all of the options listed are involved in mRNA processing to some extent, but the most comprehensive and accurate answer is e) 5' cap addition, intron removal and exon joining, 3 poly-A tail addition, and alternative splicing.

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Convergent and coevolution similarities

Answers

Convergent and coevolution are similar in such a way that they involves two species that independently develop similar characteristics as a result of a common evolutionary goal.

What is Coevolution?

This is referred to as the process which occurs when two or more species reciprocally affect each other's evolution through the process of natural selection.

It has some similarities with convergent evolution such that it involves two species that independently develop similar characteristics so as to achieve a common evolutionary goal as a result of diufferent forms of environmental changes.

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