Darwin’s hypothesis is that Exaggerated secondary sexual traits are favoured by sexual selection because they increase male mating success but more than higher exaggeration secondary sexual traits that leads to___ 

#Question id: 2110

#Unit 2. Cellular Organization

According to the fluid mosaic model of cell membranes, phospholipids:

#Question id: 3004

#Unit 2. Cellular Organization

Bacterium was inoculated into a rich medium. If at the end of 5 hours the total number of cells is 1024, then the number of elapsed generations and the generation time respectively is

#Question id: 12467

#Unit 10. Ecological Principles

#Question id: 1259

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to the phosphoinositide pathway.

A. many activated RTKs and cytokine receptors initiate phosphoinositide pathway by recruiting the enzyme phosphatidylinositol-3 kinase (PI-3 kinase) to the membrane.

B. PI-3 kinase adds a phosphate to the 3′ carbon in one of two separate phosphatidylinositol substrates, leading to formation of two phosphatidylinositol 3-phosphates: PI(3,4)P2 or I(3,4,5)P3

C. PI-3 kinase pathway can trigger cell division and prevent apoptosis, thus ensuring cell survival by the activation of PKB.

D. Activated PKB phosphorylates FOXO3a, which induces the expression of several antiapoptotic genes.

Which of the following combination is correct?

#Question id: 17287

#Unit 13. Methods in Biology