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lesya692 [45]
3 years ago
7

When stem cells become different types of cells, what is this called?

Biology
1 answer:
skelet666 [1.2K]3 years ago
4 0
Cell differentiation
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Nastasia [14]

Answer:

Reproductive System

All the body systems have one role or the other to play in digestion and absorption. Even the excretory system removes waste and toxins from the body, leaving the useful materials.

However, the reproductive system is not actively involved in digestion.

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He light colored rock pocket mice in New Mexico blend in with the sandy soil of the area, but on darker lava flow, the light col
fiasKO [112]

<u>Answer</u>: option B they have a random gene mutation that affects their fur colour.

<u>Explanation</u> :-

  • <em>Variation</em> is the phenomena which occurs in all populations.
  • These variations result in slight differences in the phenotypes of individuals .
  • These variations only arise due to <em>random mutations </em>that arise in the individuals’ genome and then can be inherited by their offspring.
  • There is always a probability of one particular trait to make the individuals survive better in the environment as compared to other trait.
  • The individuals having the trait that helps them to survive better in the environment tend to survive more and leave more progeny. This is termed as <em>survival of the fittest</em>.
  • Thus, according to the question it can be inferred that the dark fur colour arose due to a <em>random mutation </em>since it is the only source of variation. Since, in the given environmental conditions the mice having the dark fur colour were less susceptible to the predators they are better fitted to survive.
  • The dark brown fur coat mice, survive better, leave more progeny and hence, increase their population with time. However, the orginal source of origin of this trait was a random mutation. Had this mutation not occured, the dark coloured fur mice would not have been there.

So, a <em>random gene mutation affecting the fur colour made the dark coloured mice first appear in the population.</em>

6 0
3 years ago
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Fluidity of the plasma membrane is a result of
posledela

Answer:

B)Cholesterol in the membrane

Explanation:

Membrane fluidity is affected by fatty acids. More specifically, whether the fatty acids are saturated or unsaturated has an effect on membrane fluidity. ... Membrane fluidity is also affected by cholesterol. Cholesterol can make the cell membrane fluid as well as rigid.

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Answer: External segments are called metameres and internally, septa, or dividing walls, are located between the segments.

Explanation: I think it is

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Human activity has greatly increased the amount of carbon dioxide in the atmosphere. The graph below shows one consequence of th
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 <span>Direct consequences of cumulative post-industrial emissions of carbon dioxide include increasing global temperature. </span>The oceans absorb 22 million tons of carbon dioxide every day. <span>When the oceans absorb </span>CO2, the chemical reaction that takes place produces carbonic acid (H2CO3<span>), which increases the acidity (lowers the pH) of seawater. So, the balance is ruined. </span>
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