Following statements are regarding to cell death and its regulation.

A. In mammals, apoptosis can be triggered by oligomerization of Bax or Bak proteins in the outer mitochondrial membrane, leading to efflux of cytochrome c and SMAC/DIABLO proteins into the cytosol; these proteins then promote caspase activation and cell death.

B. Direct interactions between pro-apoptotic and anti-apoptotic proteins lead to cell death in the absence of trophic factors.

C. Direct interactions between pro-apoptotic and anti-apoptotic proteins lead to cell death in the presence of trophic factors.

D. Once activated, apoptotic proteases called caspases cleave specific intracellular substrates, leading to the demise of a cell.

Which of the following statements are correct?

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#Question id: 28549

#Unit 5. Developmental Biology

Which of the following survival strategies can be utilize by Dictyostelium, when will have food starvation condition  ?

a) Cell aggregation 

b) Microcyst formation

c) Zygote formation 

d) Cell division

e) cell differentiation

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#Question id: 3314

#Unit 11. Evolution and Behavior

The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 14 gm to 16 gm. Which of the following natural selection operate on this species?

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#Question id: 33356

#Unit 1. Molecules and their Interaction Relevant to Biology

Hemoglobin undergoes substantial changes in quaternary structure on oxygen binding: the a1b1 and a2b2 dimers rotate with respect to each other by

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#Question id: 23223

#Unit 2. Cellular Organization

What will be the surface area/volume ratio of a cocci bacterium with 4 micrometer diameter? 

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#Question id: 18818

#Unit 13. Methods in Biology

This PCR variant uses degenerate primers to amplify unknown sequences of DNA, related to a known DNA sequence is