Several conditions make our planet earth unique, to answer this statement we need to understand that.....
<h3>Earth is unique</h3>
There are many planets in the solar system, however, none have a location like planet Earth. Our planet is in a privileged condition, as it is located at a distance from the sun that does not prevent the emergence of elements essential for sustaining life, that is to say, it is not very close, a fact that would raise temperatures, and very far away, when they would be very low, hindering the development of lives. This factor was decisive for the formation of liquid water on planet Earth, since it is the only one with such a resource in the solar system.
With this information we can come to the conclusion that the statement is <u>correct,</u> the stability of the earth and location in the solar system, provided that the earth could have water in a liquid state.
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Answer:
I believe nRNA
Explanation:
every other rna on the list exists excpet for nRNA
Answer:
1. genetics
2. constant
3. genetic drift
4. Modern synthesis combines the ideas surrounding evolution and natural selection with those of genetics.
5. A genotype is the genetic makeup of an organism. It describes the DNA that underlies a trait. There are dominant and recessive alleles and heterozygous and homozygous genotypes. A phenotype is the physical manifestation of that genotype.
6. The most common type of mutation is a deleterious mutation. Natural selection acts to remove this allele from the population.
7. The most common type of observed mutation is a neutral mutation. This mutation doesn't impact natural selection in any noticeable way since it doesn't impact the fit of that organism. Since neutral mutations convey no advantage, they generally must spread in a population through drift. Many also will disappear through drift.
8. During sexual reproduction, each organism is provided a copy of chromosomes from each parent, and this allows for new combinations of DNA.
9. This isn't an example of genetic drift because there's a genetic component to the ability to withstand severe temperatures. Therefore, this is an example of natural selection, related to surviving extreme environmental conditions
Explanation:
Answer:
Electrical stimulation of the cell is depolarization, and electrical relaxation of cells is repolarization.
Explanation:
The electrical activity of the cell depends on the charges distributed on each side of its membrane, which depends on the presence of ions on each side, extracellular sodium and intracellular potassium.
A cell, like the neuron, at rest has a tendency to be negatively charged in its cytoplasm, while the extracellular space has a positive charge.
- Depolarization of a cell occurs by opening the sodium channels, allowing this ion to enter the cell, resulting in a difference in transmembrane potential. It is electrical stimulation of the cell.
- If the potential difference is maintained and reaches the umbral level, it produces an action potential, which in cells such as the neuron produces an electrical stimulus and in the muscle cell a contraction.
- Repolarization means the opening of potassium channels, the exit of this ion to the extracellular space and the return of the cell to rest.
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