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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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Researchers argue that some bacteria found in the human gut are in a symbiotic relationship with humans, called mutualism. Which
Rama09 [41]

Answer:

Bacteria provides vitamins to humans

Explanation:

The correct answer would be that bacteria provides vitamins to humans.

<u>By definition, mutualism is a type of symbiotic relationship between two organisms in which both benefit from each other.</u>

Bacteria in the gut of humans that provides vitamins to humans also benefit by making the human gut their shelter. While the vitamins represent an important nutrient to humans for their proper functioning, the shelter is also necessary for the bacteria for their safety.

<em>Hence, the observation that bacteria provide vitamins to humans is consistent with the argument of researchers that some bacteria found in the human gut are in a mutually beneficial relationship with humans.</em>

6 0
3 years ago
Which organic macromolecule is used for long-term energy storage?
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B.)deoxyribonucleic acid
4 0
2 years ago
The process by which a cell divides is called
PolarNik [594]

The best answer is C


The process by which a cell divides is called mitosis. It results in two daughter cells that are genetically identical to each other and to the original cell.

Multicellular organisms,  depend on mitosis for growth and repair. Organisms repair some of their tissues  using mitosis to regenerate new cells. Not all cells undergo mitosis at the same rate. In man, brain cells are much more difficult to regenerate than cheek cells which are constantly being replaced.


8 0
3 years ago
Which event occurs in photosystem I?
Firlakuza [10]

<u>Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the high energy carrier NADPH.</u>

5 0
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Place the following terms in the correct order from SMALLEST to LARGEST:
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DNA, nucleosome, coils, supercoils, chromosome.
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