why are ribosomal components (ribosomal rna and ribosomal proteins) considered reliable indicators of evolutionary relatedness?

Answer:

When in higher altitudes, ticker blond has a tendency to cause problems like heart attack's, however the Tibetans have adapted to the high altitudes and this has made their blood thinner in order to keep them safe in the altitudes, including that it has low oxygen rates in the altitude therefore providing more oxygen in the bloods cells.  

Explanation:

:D It's not my best explanation but I hope this helps <3.

Owing to the fact that ability of the redblood cells to  to carry oxygen even in low oxygen environments is neccessary at high elevations, the Tibetan population that live in higher elevations are found to possess the EPAS1 gene.

The term natural selection refers to the fact that organisms that are better adapted to their habitat will live longer and reproduce. Now we have to note that owing to the elevation at which they live, the people that possess this EPAS1 gene can cope with oxygen stress that could likely occur at a high altitude.

As such, the Tibetan population that live in higher elevations are found to possess the EPAS1 gene.

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Answer:

Paleontologists want to know the history of evolution and extinction of fossil species through geologic time. To do that, they try to study all of the fossils that have been preserved in sedimentary rocks. That's called the fossil record. Paleontologists have been collecting fossils from sedimentary rock layers around the world for over two hundred years.

Explanation:

Their goal is to figure out the succession of species through all of geologic time. Once that succession is known, it serves as a scale of geologic time. Then, if you find a particular fossil in a rock, you know where that rock fits into the geologic time scale.

Hope that helped :)

Both fossil record and faunal succession are the materials which tells us about time scale.

Scientists use the fossil record and faunal succession from locations around the world in order to determine the geologic timescale because both fossil record and faunal succession are the tools which provides information about the time scale.

Faunal succession is the fundamental tool of stratigraphy and consist the basis for the geologic time scale whereas the main goal of fossil record is to figure out the succession of species through all of geologic time so we can conclude that both fossil record and faunal succession are the materials which tells us about time scale.

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Hi,

The answer is D

Hope this helps

Hi.

Plant cell has chloroplast.

Animal cell do not.

Plant cell has a large vacuole.

Animal cell has a small vacuole.

Plant cell has a cell wall.

Animal cell do not.

Hope it helps. Brainliest please.

Organisms with the ability to oxidize organic chemicals to yield energy and use them as carbon sources are called chemoorganotrophs.

These organisms primarily rely on organic compounds to obtain energy through a process called chemotrophy. Chemoorganotrophs can be found in various environments, such as soil, water, and even inside other organisms as part of their microbiome.

Chemoorganotrophs break down organic molecules, like carbohydrates, lipids, and proteins, by oxidizing them, which releases energy in the form of adenosine triphosphate (ATP). This energy is essential for the organism's metabolic processes and survival. Moreover, these organic compounds also serve as carbon sources for the synthesis of new cellular components, enabling growth and reproduction.

There are two main types of chemoorganotrophs: heterotrophs and autotrophs. Heterotrophs obtain their carbon solely from organic compounds, while autotrophs are capable of utilizing inorganic carbon dioxide to create organic compounds through a process called carbon fixation. Both types of chemoorganotrophs play vital roles in various ecosystems, contributing to nutrient cycling, decomposition, and overall environmental balance.

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Lipoproteins primarily sent to skeletal muscles and adipose tissues are called Very Low-Density Lipoproteins (VLDL).

Lipoproteins that are primarily sent to skeletal muscles and adipose tissues are called low-density lipoproteins (LDL). LDL is often referred to as "bad cholesterol" because if levels become too high, it can increase the risk of developing cardiovascular disease.

LDL particles are smaller and denser than other lipoproteins, and they can easily penetrate the arterial wall and build up as plaque, leading to atherosclerosis. It is recommended that individuals maintain their LDL levels below 130 mg/dL, although an ideal level is below 100 mg/dL. This can be achieved through lifestyle modifications such as a healthy diet, regular exercise, and medication if necessary. In summary, the long answer to your question is that lipoproteins sent to skeletal muscles and adipose tissues are called LDL, and high levels of LDL can increase the risk of cardiovascular disease.

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Answer: the codon is the three nucleotide sequence in the mRNA that indicates which amino acid should be incorporated in the growing polypeptide chain. The anticodon is the complementary three nucleotide sequence in the appropriate tRNA. Template stand is the DNA strand off which the mRNA is synthesized.

Explanation:

The codon is the three nucleotide sequence in the mRNA that indicates which amino acid should be incorporated in the growing polypeptide chain.

The anticodon is the complementary three nucleotide sequence in the appropriate tRNA. Template stand is the DNA strand off which the mRNA is synthesized.

Codons are units of genomic information made up of three nucleotides (trinucleotides) in DNA or RNA that code for a specific amino acid or indicate the end of protein synthesis (stop signals). There are 64 distinct codons, of which 3 serve as stop signals and 61 identify amino acids.

The bases that make up DNA and the associated messenger RNA are called bases. These nucleotides are frequently identified in RNA by the letters A, U, C, and G.

Therefore, The codon is the three nucleotide sequence in the mRNA that indicates which amino acid should be incorporated in the growing polypeptide chain.

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The orientation of DNA strand synthesis must be 5'-3'. The oxygen atom linked to the 3′ carbon of the developing strand makes a covalent bond with the phosphate group, bound to the 5′ carbon of the dTMP (Option D).

What is DNA strand ?

Because the two DNA strands are made up of simpler monomeric units termed nucleotides, they are referred to as polynucleotides. Each nucleotide is made up of a phosphate group, a deoxyribose sugar, and one of the four nitrogen-containing nucleobases (cytosine [C], guanine [G], adenine [A], or thymine [T]). An alternating sugar-phosphate backbone is created when the nucleotides are linked together in a chain by covalent connections (also referred to as the phospho-diester linkage) between the sugar of one nucleotide and the phosphate of the next. To create double-stranded DNA, the nitrogenous bases of the two distinct polynucleotide strands are joined by hydrogen bonds in accordance with the base pairing principles (A with T and C with G).

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Alzheimer's disease is a progressive deterioration of the brain cells :

Alzheimer's disease is a type of dementia that begins with a gradual loss of one's memory which degenerates into the inability of a patient suffering from the disease and some of these inabilities includes;

Alzheimer's disease affects the parts of the human brain responsible for proper speech/language and memory.

Hence we can conclude that Alzheimer's disease is a progressive deterioration of the brain cells : i.e. statement in question is False

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Answer:

P(T)=P+ a1*T+a2*T2+a3*T3+a4 *T4+a5 *T5

Explanation

Given that the temperature = 10 degrees Celsius

Salinity= 35ppt

Density of the seawater is 996.73 kg/m3

Have extra set of chromosomes compared to other species that have the same but fewer set is being called polypliod organisms are constantly under assault from their environment. Having extra set of chromosomes make them better able to cope with the pressures that thretend to wipe them out.

Full form of DNA is Deoxiribose Nucleic Acid

Answer:

Deoxyribonucleic Acid

Explanation:

a. Plants use CO2 in the process of photosynthesis to make glucose (sugar) and oxygen.

b. Animals use oxygen in the process of cellular respiration and make more CO2.

c. The oceans are the main regulator of CO2 in the atmosphere because CO2 dissolves easily in them.

d. In the past, huge deposits of carbon were stored as dead plants and animals in the form of fossil fuels.

e. Today these deposits are burned as fossil fuels, which include coal, oil, and natural gas.

f. More CO2 is released into the atmosphere today than in the past because of human activities, such as burning fossil fuels and deforestation.

g. Too much CO2 in the atmosphere may be responsible for the greenhouse effect/global warming,

where increased concentrations of greenhouse gases trap heat and lead to rising temperatures on Earth.

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Answer:Evolution of brown bears to polar bears

Evolutionary studies suggest that polar bears evolved from brown bears during the ice ages. The oldest polar bear fossil, a jaw bone found in Svalbard, is dated at about 110,000 to 130,000 years old. DNA comparisons suggest the species may have split at least 150,000 years ago, and maybe longer.

Explanation:

Answer: Two items you might purchase in a grocery store that are sold in metric units are bread and boxes of cereal.

Explanation:

Answer:

Organisms

Explanation:

Water, Minerals, and Air are the resources while Organisms are the ones that fight for those resources

The process of passage of matter across the cell membrane is known as membrane transport.

It involves the movement of molecules, ions, and other substances across the lipid bilayer of the cell membrane. There are two main types of membrane transport: passive and active transport. Passive transport occurs when substances move from an area of high concentration to an area of low concentration, which does not require energy.

Active transport requires energy and involves the movement of substances against their concentration gradient. This process is carried out by protein pumps that use energy from ATP to move substances across the membrane.

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Answer:

B. VESSELS, HEART, CIRCULATING FLUID.

Explanation:

Blood is the circulating fluid. It is the connective tissue of liquid plasma and cells.

Heart is a muscular pump to move the blood and have it circulate throughout the body of living animals.

Blood vessels are arteries, capillaries and veins that deliver blood to all tissues.

The Circulatory System has two types. They are the open circulatory system and the close circulatory system.

An open circulatory system is one where the blood does not circulate inside blood vessels  but also flows into cavities that irrigate tissues.

A close circulatory system is one where the blood circulate only inside the blood vessels.

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Answer:

B)vessels, heart, circulating fluid

Explanation:

Answer:

Due to sound, population is decrease.

Explanation:

Due to noise of the wind turbine, there is decrease in population of meadowlarks in that region which is the only adverse effect of wind turbine. This wind turbine produces clean energy and produces no pollution like energy produce from burning of coal. This migration of meadowlarks can imbalance the ecosystem that has a great effect on the surrounding area.

From smallest unit to largest, the correct hierarchy is as follows:

1. Subatomic particle

2. Atom

3. Molecule

4. Cell

5. Tissue

6. Organ

7. Organism

8. Community

At the smallest level of organization, we have subatomic particles, which are the building blocks of atoms. Atoms combine to form molecules, which are composed of two or more atoms bonded together. Cells, the fundamental units of life, are made up of various molecules and are considered the basic structural and functional units of living organisms. Tissues are groups of cells that work together to perform specific functions.

Organs are formed by the organization of different tissues working together to carry out specific tasks within an organism. An organism refers to a complete living entity, such as a plant, animal, or human, consisting of multiple organ systems functioning together. Lastly, a community represents a collection of interacting organisms within a particular habitat or environment.

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Answer:

chemosynthesis

Explanation:

the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

There are two various ways by which organisms produce food. This is through photosynthesis which is utilized by plants and chemosynthesis which is utilized by some other organisms.

The process by which organisms that live deep in the ocean produce food using energy stored in chemicals is through chemosynthesis.

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The possible blood types for the children of a man with the genotype iai and a woman with the genotype iaib are A, B, or AB.

When a man with the genotype iai (homozygous for the ABO blood type allele i) marries a woman with the genotype iaib (heterozygous for the ABO blood type alleles A and B), their children can have various blood types based on the inheritance patterns of the ABO system.

The ABO blood type system is determined by the presence or absence of A and B antigens on red blood cells, as well as the presence of antibodies in the plasma. The possible blood types for their children can be determined by examining the combinations of the A and B alleles.

In this case, the man's genotype is iai, which means he only has the i allele, resulting in blood type O. The woman's genotype is iaib, which means she has both the A (ia) and B (ib) alleles, resulting in blood type AB.

Possible blood types for their children;

Each child has a 50% chance of inheriting the i allele from the father and the A allele (ia) from the mother, resulting in blood type A.

Each child also has a 50% chance of inheriting the i allele from the father and the B allele (ib) from the mother, resulting in blood type B.

However, their children could have blood types A, B, or AB, with a 50% chance for each blood type. They would not have blood type O, as the i allele is recessive and not present in the mother.

Therefore, the possible blood types for the children of a man with the genotype iai and a woman with the genotype iaib are A, B, or AB.

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The hybrid gene mRNA transcript does not undergo 3' cleavage and polyadenylation because of the potential effects of alternative splicing, premature termination, and altered gene structure that can result from the fusion of two separate genes.

The hybrid gene mRNA transcript does not undergo 3' cleavage and polyadenylation due to the following reasons:

1. Alternative splicing: Hybrid genes are formed through the fusion of two separate genes. This can lead to alternative splicing events that might eliminate the 3' cleavage site and polyadenylation signal, preventing the transcript from undergoing the usual 3' processing.

2. Premature termination: The fusion event may lead to premature termination of the transcript, resulting in the loss of the 3' cleavage site and polyadenylation signal, thereby preventing 3' cleavage and polyadenylation.

3. Altered gene structure: The fusion of two separate genes might disrupt the gene structure, specifically the 3' untranslated region (3' UTR) which contains the cleavage and polyadenylation signals. If these signals are disrupted or absent, the hybrid gene mRNA transcript will not undergo 3' cleavage and polyadenylation.

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Answer:

Airplanes have wings, just like birds. They also have a light skeleton (or framework) to decrease their weight, and they have a streamlined shape to decrease drag. The big difference is that airplanes do not flap their wings.

Answer:

i think the answer is c roundworms

Explanation:

i know im right becausee i made a 90% with this being right

Answer:

a roundworm

Explanation:

I got the answer right on quiz .

Answer:

just think of the most basic or obvious and put it on or just think if u where in one what they would be wit someone elses

Explanation:

The motor neuron and all the myofibers it innervates is referred to as a __motor units__ . every time a motor neuron sends a nerve impulse to a skeletal muscle fiber, the muscle fiber will  contract    .

The motor unit is the association between the motor neuron and a group of fibers from the muscle.

A single muscle is composed of several motor units. The fibers composing each of them are just a little part of the whole muscle mass, meaning this is the part that will contract.

The motor unit is the basic unit from which the CNS controls motion.  

The central nervous system (CNS) generates an action potential in the presynaptic membrane.

This action potential provokes the neurotransmitter release (acetylcholine, Ach) into the synaptic space.

The neurotransmitter travels through the synaptic space and reaches the postsynaptic membrane, where it binds to its receptors on the skeletal muscle fiber, causing ion channels to open.

Ion interchange between the extracellular space and the cell interior triggers a series of events that end by depolarizing the muscle fiber membrane, and leading to fiber contraction.

The motor neuron and all the myofibers it innervates is referred to as a _motor unit_ . every time a motor neuron sends a nerve impulse to a skeletal muscle fiber, the muscle fiber will contract.

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Answer:

A

Explanation:

The energy carried by electromagnetic waves is sometimes referred to as radiant energy. Electromagnetic waves do not require a medium for propagation hence they can travel through vacuum and are known to transmit enormous amount of energy.

Electromagnetic waves transmit energy away from the source of the wave. Hence the answer chosen in the answer section above.

Answer: I believe 99% it is D

Explanation: