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Vlada [557]
2 years ago
12

Why can a cell not survive under conditions of unlimited growth?

Biology
2 answers:
svet-max [94.6K]2 years ago
8 0

Answer:

Cell depend on dependent upon exogenous signals for survival, growth, and proliferation. The growth factor influencing cell growth can be examined using a signal molecule called interleukin-3(IL-3).

The cells having dose of interleukin-3 below threshold undergo apoptosis or natural death, otherwise unlimited growth can cause cancer.

As per the study, high rate of growth factor results in shortening of G1 phase of the cell cycle and leads to more rapid proliferative expansion. the cells which grows under high concentrations of growth factor are more susceptible  to cell death during growth factor withdrawal.

Hence, cell are not able to survive under conditions of unlimited growth.

andre [41]2 years ago
4 0
Because, substances can pass through it while others can not but Oxygen, good molecules,
and waste products can only go through it.
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3 years ago
Why is the ability of the cell membrane to be "picky" important?
Yuliya22 [10]

Answer:

Hi there!

Your answer is:

It is very important for the cell membrane to be <em>semi-permeable</em> because the ability to pick and choose what comes in and out of the cell keeps the cell safe! The membrane can choose to block out nasty germs and can also choose to get rid of internal waste.

An example of when this is important is in this scenario:

Let's say the cells are in a really salty solution. Naturally, salt will want to pull the water out of the cell. If the membrane <u>wasn't</u><u> </u> semi permeable, the water would listen to the salt and leave the cell. This would cause cell death. <u>BECAU</u><u>SE</u> the membrane is semi permeable, they can choose <em>not</em> to give the salt any water, keeping them alive

Hope this helps

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Which of the following characteristics would indicate why a virus is non-living?
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D

Explanation:

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