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LenaWriter [7]
2 years ago
12

In contrast to growing microtubules, shrinking microtubules ............. Group of answer choices have strong lateral interactio

ns at their plus ends. have a GTP cap at their plus end. All other choice have curved protofilaments at their plus ends.
Biology
1 answer:
Otrada [13]2 years ago
4 0

Answer:

have curved protofilaments at their plus ends

Explanation:

Microtubules are polymers of tubulin proteins that function as the cytoskeleton of eukaryotic cells. Microtubules are dynamic structures that can grow and shrink at a rapid rate. During this process, tubulin subunits can associate and dissociate at the plus end of the protofilament. Tubulin subunits bind to two GTP molecules, one of which is hydrolyzed to GDP after assembly. When microtubules are unstable, protofilaments curl outwards because GDP-bound tubulin has a weak affinity (thereby curving it) and disassemble. The dynamic stability of microtubules is regulated by a feedback loop: when microtubules shrink, free tubulin concentration increases and microtubules start to grow. As microtubules grow, free tubulin concentration decreases and the rate of GTP-tubulin addition also decreases.

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6 0
3 years ago
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OlgaM077 [116]
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8 0
3 years ago
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Finches that live in an isolated area with limited access to seeds and water is an example of what mechanism in Darwin's theory
Brums [2.3K]

Answer:

c. Limits on population growth

Explanation:

Darwin was heavily influenced by Malthusian theory of how population growth was influenced by growth limits. For Darwin, the population growth of species of living beings would be influenced by the limits imposed by the environment in which these species live, through the amounts of natural resources available to the population.

Thus, Darwin concludes that when the environment allowed an abundance of natural resources, such as water and food, the population of living beings would tend to grow more, however, when natural resources are limited, the population would grow less. This is called "population growth limits".

An example of this can be seen in the question above, where finches that live in an isolated area have limited access to seeds and water.

4 0
3 years ago
The medial cord is medial to the axillary artery and is formed by the ______ division of the inferior trunk; it contains portion
SpyIntel [72]

The medial cord is formed by the anterior division of the inferior trunk.

It contains portions of nerves C8-T1.

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               The nerves labeled as C refer to the nerves affecting the motor system in our neck and upper limb. Thus nerves from C8 work for the motor conventions of our upper limb and neck.

              The nerves labeled as T are spread over our chest, shoulders, and hands. Thus, the nerve T1 works in the upper part of our body.

To learn more about cords and nerves,

brainly.com/question/28198286

#SPJ4

4 0
1 year ago
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xenn [34]

Answer:

450

Explanation:

subtract 25 divide by 2 add to 400

3 0
3 years ago
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