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under certain conditions, cytochrome c can trigger apoptosis, or programmed cell death, by activating cytosolic proteins known as caspases. (a) why doesnt cytochrome c trigger apoptosis in healthy cells? (b) what must happen in order for cytochrome c to activate the caspases?

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Irving Heathcote
Irving HeathcoteLv2
28 Sep 2019

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Related questions

Mark correct answer of the multiple choice questions. Select only one answer, if any other indications are not present in the question. Write 2-3 sentences of explanation, why you selected this particular answer, or answer specific question if indicated.

1) What is the one of the major functions of vacuoles in plant cells?

A. Energy production

B. Degradation of proteins

C. Synthesis of proteins

D. Maintaining internal hydrostatic pressure

Then, Please write at least three differences between eukaryotic and prokaryotic cells?

2) Alteration in membrane asymmetry is employed for detection of early apoptosis. Interaction of which molecules is utilized in this process?

A. Phosphatidylserine and annexin-V

B. DNA polymerase and dUTP

C. Caspase 3 and cytochrome

D. MTT and NADH

Explain

These are questions from cell molecularbiology, and it requires some extensive knowledge. I havetried finding the answers myself online and in my book, so this isthe last thing I know to do. I need detailedexplanations PLEASE!!!!! Someone please help!!!! Thank You!!!!

Microtubules are stabilized by whichnucleoside

ADP

ATP

CTP

GTP

UTP

The protein that normally inhibitsthe protease activity required for separation of sister chromatidsis

a. APC

b. cohesin

c. M-cyclin

d. securin

e. separase

P53 can inhibit uncontrolled growthdue to DNA damage by all of the following except

a. activate immune system

b. inhibit cell division

c. prompt apoptosis

d. trigger DNA repair

e. all of the above

What role do telomeres and telomerase play in cancer progression?

A.

Telomeres are needed for the chromosome fusions that often occur in cancer cells, so telomerase must be reactivated for cancer to progress.
B.

Telomerase is usually turned off in cancer cells, allowing the cell to lose its telomeres and enter apoptosis.
C.

Telomerase activity causes cells to avoid the process of apoptosis, so most healthy cells keep telomerase on. When telomerase is turned off, a cell can progress into a precancerous state.
D.

Telomere shortening is a natural process that limits the number of divisions a cell can undergo, but if telomerase becomes active in a cell, then the cell can reenter a proliferative phase.

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