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yKpoI14uk [10]
4 years ago
6

You place a centrosome in a test tube that is a square plastic box the size of a cell. You add tubulin and GTP so that microtubu

les can be nucleated by the centrosome and be assembled in vitro. You initially place the centrosome in the lower right corner of your test tube box. Once microtubules have assembled to steady state where will your centrosome be located?
a) In the upper right corner of your test tube box
b) In the upper left corner of your test tube box
c) In the center of your test tube box
d) In the lower left corner of your test tube box
e) In the lower right corner of your test tube box
Biology
1 answer:
Zolol [24]4 years ago
3 0

Answer:

c) In the center of your test tube box

Explanation:

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3 years ago
Describe two examples of ancient and modern organisms that may be related. Use evidence and scientific reasoning to support your
omeli [17]

Two examples of related organisms are dinosaurs/chickens, and the megalodon/the great white shark.

<h3>How have organisms evolved?</h3>

Life emerged on our planet 3.7 billion years ago, and since then organisms have evolved or changed over time this includes:

  • The appearance of more complex organisms, which is the result of natural selection.
  • The diversification of organisms.
  • The extinction or disappearance of species.

This has caused all organisms that exist today to be related to other organisms of the past. Let's examine two examples.

<h3>Dinosaurs and chickens: </h3>

According to scientific research, birds evolved from dinosaurs. Indeed, it has been determined birds started with theropods, which were a specific group of dinosaurs.

This means modern birds including chickens are related to this group of dinosaurs, even if overtime birds have evolved a lot and they might not seem to be very similar to dinosaurs.

<h3>The megalodon and the great white shark:</h3>

These two species of shark likely share a common ancestor and due to this, both species have many similarities such as the shape of their teeth. However, megalodons are extinct, while great white sharks still exist today.

Learn more about evolution in: brainly.com/question/2725702

6 0
3 years ago
The breeds of dogs are all
liraira [26]

Answer:

C Darwin

Explanation:

Charles Darwin, the father of evolution theorised that within any population, there exists variation in traits which help the animals adapt to their environment and help them survive.

In the same vein, he believed that the breeds of dogs are all one species, but they have incredible genetic diversity.

Therefore, Charles Darwin first realized that variation mattered, even though he didn't know the exact mechanism.

5 0
3 years ago
All cells are surrounded by a membrane.
gayaneshka [121]

Answer:

it's semipermeable

Explanation:

7 0
4 years ago
What is formed when atoms of elements combine?
Dominik [7]
A. Compounds

hope this helped

7 0
4 years ago
Read 2 more answers
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