Space review part 2, I need help on this! Giving brainliest to best answer

The answer is yes this is true, the dynamic aspect of cytoskeletal function is made possible by the assembly and disassembly of a large number of complex proteins into larger aggregates. There are three types of the cytoskeleton: actin filaments (microfilament), microtubules, and intermediate filaments.

Hence, the above statement is true.

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The answer is A. Crabs are more abundant in areas with high salinity than in areas with low salinity is a reasonable claim the researchers can make based on the data in the graphs.

Explanation:

A) Crabs are more abundant in areas with high salinity than in areas with low salinity

This is a reasonable claim because the data in the graphs show that the average number of crabs per trap is higher in sites 1 and 2, which have the highest salinity levels, than in sites 3, 4, and 5, which have lower salinity levels. The claim is also supported by the error bars, which indicate the range of variation in the data. The error bars for sites 1 and 2 do not overlap with the error bars for sites 3, 4, and 5, suggesting that the difference in crab abundance between the high and low salinity sites is statistically significant.

B) Crab populations are most limited where salinity range between 10 and 15 psu.

This is not a reasonable claim because the data in the graphs do not show a clear relationship between salinity and crab abundance in this range. Site 3 has a salinity of about 10 psu and a low average number of crabs per trap, but site 4 has a similar salinity and a higher average number of crabs per trap. Site 5 has a salinity of about 15 psu and a low average number of crabs per trap, but site 2 has a higher salinity and a much higher average number of crabs per trap. The claim is also not supported by the error bars, which show a large overlap in the data for sites 3, 4, and 5, suggesting that the difference in crab abundance among these sites is not statistically significant.

C) Salinity does not influence crab populations because the number of crabs fluctuates across the five sites.

This is not a reasonable claim because the data in the graphs do show a general trend of higher crab abundance in higher salinity sites, as explained in claim A. The claim also ignores the possible effects of other factors that may influence crab populations, such as temperature, food availability, predation, and competition. The claim is too simplistic and does not account for the variability and complexity of the data.

D) Crab populations are larger in areas with low salinity than in areas with high salinity.

This is not a reasonable claim because the data in the graphs show the opposite trend, as explained in claim A. The claim is contradicted by the evidence and does not reflect the data.

Pollen tubes allow sperm to fertilize the egg.

A pollen tube is generated from the pollen that extends down its style into the ovule during pollination process of higher plants. Pollen nuclei move down the pollen tube and fertilize the ovule after the pollen germinates upon that stigmatic surface.

Sperm- An ovum (egg cell), which would be produced by the a biologically female body, is the target of a sperm cell, which is intended to be discharged during sexual activity. Once they are joined, the sperm will enter the egg and fertilize it to produce new genetic material. A pollen grain is a microscopic male gametophyte or male plant (gamete-forming plant). 

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West Virginia compared to that of Virginia does not feature a process for initiated constitutional amendments in their constitution.

A constitution is described as the aggregate of fundamental principles or established precedents that constitute the legal basis of a polity, organization or other type of entity and commonly determine how that entity is to be governed.

The state of west Virginia has some differences in their constitutional amendment processes which is means that they do not feature the process for initiated constitution amendment.

Therefore in conclusion, amendments in West Virginia can only be put on the ballot done either through referral by the legislature or by a constitutional convention.

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There is a 25% chance that the parents will have a child who is homozygous dominant for this feature.

One of the characters in the supplied question possesses both the Y dominant allele and the Y recessive allele. The trait encoded as Yy cross with Yy is heterozygous in both parents.

The intersection of Yy X Yy

One in four children will have a recessive trait if both parents only have one copy of the recessive gene.

Children are born: YY: 2Yy: yy

For dominant, homozygotes would be represented. - YY

Thus, one YY out of every four offspring.

(1/4)*100

= 25%

Therefore, 25% would be the probability.

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Answer: in facilitated diffusion there are a specialized membrane channels.

Explanation:

Answer:

Lysosome

Explanation:

Answer: Lysosome - Found only in animal

If the pituitary gland is damaged or removed, our growth and development are adversely affected.

Insulin reduces blood sugar levels.

The development of secondary sexual characteristics is directly related to gonads.

The pituitary gland is known as the master gland of the endocrine system because it controls many hormone glands in our body. Without Pituitary glands, the body wouldn't reproduce and grow properly and many other functions are not working properly in our body.

Insulin reduces the blood sugar levels in our body and provides glucose to the cell for the production of energy. When blood sugar levels are too low, the pancreas releases glucagon in the blood with help of insulin. Glucagon is a type of hormone that pancreas help to regulate your blood glucose levels. The liver release stored glucose which causes the blood sugar levels in the body to rise.

The pubertal changes in secondary sex characteristics like breast development, fat deposition, development of genitalia, changes in the larynx, and hair growth lead to increasing levels of gonads.

So we can conclude that our growth and development are adversely affected if the pituitary gland is damaged or removed.

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Taiga is important as it provides a pleasant climate.

The taiga is crucial for the summer birds as a biome because it gives them a more comfortable environment and enough food during the summer when in the southern biomes it is considerably hotter and there is much less food and water available. However, the taiga only offers these favorable circumstances in the summer.

Due to the taiga's extremely cold climate, where the majority of the years see temperatures as low as -40 and -50 degrees regularly, the ground is frozen as are the tree branches, and there is a severe lack of food, summer birds are unable to live there year round and must migrate south as the summer in taiga comes to an end.

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The physical and computer models can help design a solution for an ecological problem by showing the problem in the form of the model.

Modeling provides possibilities for the exploration of ideas that are not easily pursued through field experimentation and in the laboratory. Ecologists use models to simulate the systems they study and to investigate theories of the way those systems operate. An ecosystem model is a collection of mathematical representations of an ecological system. There are three types of ecological models i.e. temporal, spatial, and spatial-dynamic.

So we can conclude that with the help of a model the problem can be shown so we can say that physical and computer models can help design a solution for an ecological problem.

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The DNA coding sequence of a gene. if an a were swapped for a t, what type of mutation may want: ought to purpose a silent, missense, or nonsense mutation because those are the kinds that may be a result of a nucleotide-pair substitution like this one.

Deoxyribonucleic acid is a polymer composed of polynucleotide chains that coil around every different to shape a double helix sporting genetic commands for the development, functioning, increase and reproduction of all known organisms and plenty of viruses. DNA and ribonucleic acid are nucleic acids.

DNA is the facts molecule. It stores commands for making different huge molecules, known as proteins. those commands are stored inside each of your cells, disbursed among forty-six lengthy systems referred to as chromosomes. those chromosomes are made from hundreds of shorter segments of DNA, known as genes.

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The DNA coding sequence of a gene. if an a were swapped for a t, option D. It could cause a silent, missense, or nonsense mutation because those are the types that can be caused by a nucleotide-pair substitution like this one.

Human genomes consist of both protein-coding DNA sequences and diverse styles of DNA that don't encode proteins. The latter is a diverse class that includes DNA coding for non-translated RNA, which include that for ribosomal RNA, transfer RNA, ribozymes, small nuclear RNAs, and numerous varieties of regulatory RNAs.

Non-coding DNA corresponds to the quantities of an organism's genome that do not code for amino acids, the building blocks of proteins. a few non-coding DNA sequences are acknowledged to serve useful roles, inclusive of inside the regulation of gene expression, whilst different regions of non-coding DNA don't have any regarded characteristic.

The principle distinction between coding and noncoding DNA is that coding DNA represents the protein-coding genes, which encode proteins, while noncoding DNA no longer encodes proteins.

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Disclaimer:- your question is incomplete, please see below for the complete question.

Think about the DNA coding sequence of a gene. if an a were swapped for a t, what kind of mutation could it cause and why?

a. It could cause a frameshift nonsense or frameshift missense mutation because it would change the reading frame of the codon triplet.

b. It could cause a nonsense mutation because the sequence would no longer be the same, so the protein would be shorter and non-functional.

c. It could cause a silent mutation because A and T are complementary to each other so it is not really a substitution mutation.

d. It could cause a silent, missense, or nonsense mutation because those are the types that can be caused by a nucleotide-pair substitution like this one.

We call specialized neurons in the occipital lobe’s visual cortex that respond to particular edges, lines, angles, and movements "feature detectors".

What are feature detectors?

Feature detectors are neurons present in the central nervous system, more specifically the brain. They efficiently receive visual information and respond to specific features, such as lines, edges, angles, movement, etc.

What makes these neurons special is the way they help the body respond to some type of visual stimulus that has unique characteristics.

In summary, feature detectors made it possible for humans to identify the shape of an object. A football goal keeper, for example, can easily identify a fast moving round ball and predict the angle to fly so as to complete a save. Identifying that round ball and the angle it is coming at is the function of feature detectors.

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Answer:

Cellular respiration is a process in which glucose is broken down to produce ATP, or energy. This same energy is essential to all processes within the cell, powering almost everything.

I'm sorry I couldn't provide a better explanation :(((

It was frequently employed in the 1950s and 1960s to get rid of insects that ate crops.

However, DDT was essentially outlawed in the United States in 1972 after researchers found that birds like the peregrine falcon and bald eagle were eating the pesticide and were unable to hatch offspring due to eggshell weakening.

The peregrine falcon, the fastest bird and fastest animal in the world, is best renowned for its diving speed when flying, which may reach more than 300 km/h (186 mph). The underparts are white to yellowish white, with black bands on the bluish gray upper parts of the bird.

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The isolated skeletal muscle was stimulated multiple times in a short period of time while completely relaxed, resulting in an increase in contraction force. This is known as treppe.

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Answer:

Large warm and cold air masses meeting

Explanation:

Jet streams are formed by warm and cold air masses meeting in the atmosphere.

Answer:

True

Explanation:

A chunk of the plants that are found in the chaparral biome are resistant to the common flames.

genetic study that sought to tie the behavior of various dog breeds to their ancestry. The percentage of purebred dogs was around 50%, with the other dogs being "mutts." For specific breeds, some of the outcomes were relatively predictable, while many results showed no association.

For instance, Belgian shepherds, Border Collies (a type of herding dog), and Hungarian Viszla dogs shown the highest association between genetics and the capacity for understanding human speech and obeying directions (a trait known as biddability) (a hunting dog). Additionally, owners were asked to provide a list of other habits, and the researchers looked to see whether there were any genetic ties to those behaviors. "Doesn't bury toys" was a resoundingly favorable response, considering only 90% of Greyhounds do this. "Gets caught behind objects" (linked to genes for cognitive ability) and "howling" were the two negative behaviors most frequently mentioned as having a significant genetic component (near a gene involved in speech and language).

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An event which is a potential effects of a point mutation within a protein coding gene is: B. a nucleotide is replaced with another nucleotide, but the amino acid sequence remains the same.

A nucleotide can be defined as the subunit of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) which typically comprises a nitrogenous base. Additionally, some portion of the nucleotide include the following:

Point mutation can be defined as a type of genetic mutation that occurs in a genome, which typically changes a deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) when a single base pair is deleted, added, modified or changed (altered).

In Genomics, it has been proven by scientific research that when a point mutation occurs within the protein coding gene, it typically causes a nucleotide to be replaced by another nucleotide, while the amino acid sequence of the nucleotide would remain the same.

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oxygen enters seawater as a byproduct of photosynthesis and diffusion from the atmosphere.

The conversion of sunlight, carbon dioxide (CO2), and water into food (sugars) and oxygen is known as photosynthesis. Algae, certain bacteria, and plants all use this process. To assist in the creation of clean fuels and renewable energy sources, this article will examine the basic concepts of photosynthesis and related studies. The two forms of photosynthetic processes are anoxygenic and oxygenic, respectively. Despite the fact that they both operate on very similar principles, oxygenic photosynthesis, which is found in plants, algae, and cyanobacteria, is the more prevalent process.

Light energy converts CO2 into carbohydrates by transferring electrons from the water (H2O) absorbed by plant roots during oxygenic photosynthesis. The CO2 is "reduced," or gains electrons, while the water is "oxidised," or loses electrons, during this transfer. Carbohydrates and oxygen are both created.

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Radiometric dating is a method of determining how old something (perhaps a wooden artifact, stone, or fossil) is based on the presence of radioactive isotopes.

The basic logic behind radiometric dating is to determine the age of the sample by comparing the presence of radioisotopes in the sample to their known abundances and known half-lives (decay rates) on Earth.

Radiometric dating helps determine the age of ancient objects because many radioactive materials decay slowly. Rock age is determined by radiometric dating, which examines the proportions of two different isotopes in the sample.

Because radioactive isotopes decay at predictable rates, geologists can use instruments like this thermal ionization mass spectrometer to date samples. The half-life of an element is the time it takes for exactly half the amount of that element to decay. The age of a sample can be determined from the ratio of parent and daughter isotopes in the sample.

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The methods used by biologists to distinguish different species are: analyzing DNA or other molecular sequence

observing the outward appearance of individuals

assessing the ability of individuals of different groups to successfully interbreed

determinating evolutionary relationships and lineages

determining the organisms' ecological niches

Scientists use many ways to distinguish different species. Scientists use the DNA of organisms to look for similarities and differences in them. Based on these similarities and differences, they are able to distinguish species.

Assessing the physical traits of an organism also helps in differentiating it from other species.

Evolution is also a big key to determining the relationship and differences among species.

The place where an organism lives and its ecological nice also help in determining the differences and similarities in species.

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Proteins and phospholipids make up the majority of the cell membrane's structural elements.

What is plasma membrane?

The majority of the plasma membrane is composed of proteins, carbs, and lipids (including phosphatidylcholine). The plasma membrane protects intracellular components from the extracellular environment. The plasma membrane, that also mediates cellular functions, regulates the substances that enter and leave the cell. The majority of the plasma membrane is composed of lipids (phospholipids as well as cholesterol), proteins, as well as carbohydrate groups linked to some of the lipids and proteins. Phospholipids are lipids made up of glycerol, two fatty acid tails, as well as a phosphate-linked head group.

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The following correctly identifies which organs develop from different embryonic tissue layers in a frog is Gastrula.

The ectoderm gives rise to the nervous system and epidermal skin cells the mesoderm gives rise to the muscle cells and connective tissue in the body, and the endoderm gives rise to the digestive system and other internal organs. The fertilized egg becomes a hard ball of cells increase. It then becomes a hollow ball of cells called a blastocyst In the uterus the blastocyst nests in the uterine wall.

Attaches to the placenta and develops into an embryo surrounded by a fluid-filled membrane. Gastrulation is defined as an early developmental process in which the embryo transforms from a one-dimensional layer of epithelial cells and reorganizes into a multilayered and multidimensional structure called the gastrula. Cotyledons are the primary cell layer formed during embryonic development.

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Woodland is the type of environment can they infer it inhabited for the fossil

How can I train to be a paleontologist?

a degree from an accredited university in geology, earth sciences, paleontology, or a similar field. understanding of conducting field surveys in a variety of, occasionally difficult, meteorological and environmental situations. Ability to create and analyze stratified cut samples from the Earth utilizing large machinery.

Paleontologists are scientists who use fossilized organisms to reconstruct the past of life on Earth. Fossils are traces of previous life on Earth and might be casts or remains of animal bodies (body fossils). Another sort of fossil are traces.

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When the chromosomes in a sex cell exchange genetic material during Meiosis I. this is called crossing over.

Crossing over in meiosis is the exchange of genetic material or chromosome segments between non-sister chromatids. This happens when homologous regions on corresponding chromosomes exchange with one another.

Significance:

The process of evolution depends on crossing across.

Genetic maps can be constructed thanks to its frequency.

It results in a novel gene combination.

The thread-like chromosomes found in the nucleus are responsible for transmitting genetic material from one generation to the next. Cell division, inheritance, variation, mutation, repair, and regeneration all depend on them.

In eukaryotic cells, the genetic material is contained in chromosomes, which are composed of highly structured DNA molecules and supported by histone proteins.

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A petri dish contains one yeast cell whose nucleus contains 24 chromosomes. After the cell undergoes one round of its cell cycle, it will contain 48 cells, each with 24 chromosomes.

The cell cycle may be defined as the entire sequence of events happening from the termination of one nuclear division to the initiation of the next in a series of steps.

It is known that a yeast cell undergoes mitotic cell division. In mitosis, each parental cell produces two daughter cells with identical genetic material in each of them. So, the amount of chromosomes remains the same, i.e. 24 but the cell number increase twice.

Therefore, after the cell undergoes one round of its cell cycle, it will contain 48 cells, each with 24 chromosomes.

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The correct option is a. help retain moisture in terrestrial environments.

Both arthropods and mollusks have robust chitinous exoskeletons. High levels of calcium carbonate minerals also contribute to the mollusc exoskeleton's rigidity. Arthropods' exoskeletons do not develop along with the rest of the animal, in contrast to mollusk shells.

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The plasma membrane's capacity to let some chemicals through while preventing others is known as selective permeability.

A phospholipid is a type of lipid composed of glycerol, two fatty acid chains, and a group that contains phosphate. The hydrophilic (water-loving) head is made up of the phosphate group, and the hydrophobic (water-fearing) tails are made up of the fatty acid chains.

A stable partition containing phospholipids separates two water-based compartments. The inside of the membrane is formed by the hydrophobic tails attached to it. The hydrophilic heads on the opposite end, which face outward, are exposed to aqueous fluids both within and outside of the cell.

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