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Leni [432]
3 years ago
5

Some cancers are caused by mutations that stop certain proteins from working. The inactivation of whát kind or protein could lea

d to cancer? to.
a.one that sped up the cell cycle b. one that slowed down the cell cycle
C .one that acted as a growth-promoting molecule
d. one that responded to growth promoting molecules​
Biology
1 answer:
77julia77 [94]3 years ago
3 0

Answer:

The inactivation of one protein that slow down the cell cycle could lead to cancer. (option b).

Explanation:

The cell cycle is the process a cell undergoes when it divides during its life. This process includes a control mechanism to prevent normal cells from replicating more than normal, called cell cycle regulation.

In oncogenesis - the formation of malignant tumours - many factors induce the abnormal growth of a tissue by the abnormal multiplication of the cells that form it, leading to cancer. One of these factors may be a mutation in the DNA that prevents the production of regulatory proteins.

The mutation that produces exaggerated cell growth -and which can eventually lead to cancer- can create defects in a specific regulatory protein that slow down the cell cycle, so that exaggerated and uncontrolled cell replication occurs.

Once a tumor tissue has formed, successive mutations will lead to a lack of cell differentiation, the property of forming blood vessels, the ability to invade tissue and lose its apoptosis mechanism, that characterizes cancer cells.

Learn more:

Cyclines in cell cycle regulation brainly.com/question/6821354

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2. Explain the movement of initial energy from the sun<br> through an energy pyramid.
Ber [7]
So the sun gives energy to the producers (plants) and then the primary consumers eat the producers getting their energy from the plants. Then, the secondary consumers eat the primary consumers getting their energy from the primary consumers and finally the tertiary consumers eat the secondary consumers getting their energy from them. Therefore, the entire energy pyramid starts with the sun!

Hope this helped!
3 0
2 years ago
What is the important result of mitosis?
sukhopar [10]

Answer:

The importance of mitosis lies in its condition of cellular reproduction par excellence, characteristic of the vast majority of life forms that currently populate the Earth.

Explanation:

Mitosis is the cellular process by which two identical nuclei are produced in preparation for cell division. In general, mitosis is immediately followed by the equitable distribution of the cell nucleus as well as the rest of the cellular content in two daughter cells.

We all start being a cell. That is quite difficult to imagine, but it is true. And now there are about a hundred billion cells in each of our bodies, and each one has to carry the complete set of DNA instructions. That means that when cells divide, all that has to be copied by some process. And that is mitosis, where each chromosome has to be converted into a pair, and then they have to separate properly so that each of the daughter cells receives a complete set.

7 0
3 years ago
Structures that appear to have lost size and function over the proposed evolutionary history of an organism are called _________
maksim [4K]
I believe their called:
<span>Vestigial Organs</span>
4 0
3 years ago
It is imperative that the cells of the heart beat simultaneously in order to be effective, so the cells are connected by _______
timofeeve [1]
Myocardial conduction cells are connected by cardiac muscle tissues
6 0
2 years ago
Why do hens scream in the morning ?
aev [14]
<h2>♨ANSWER♥</h2>

Chickens are vocal creatures, and if you're a chicken keeper, you might notice that your flock is particularly noisy in the morning. Chickens can make noise in the morning for a few reasons, including; they want to get out of the coop for food and water, they've laid an egg, or because they're vocalizing to each other.

<u>☆</u><u>.</u><u>.</u><u>.</u><u>hope this helps</u><u>.</u><u>.</u><u>.</u><u>☆</u>

_♡_<em>mashi</em>_♡_

4 0
2 years ago
Read 2 more answers
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