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: 12103

#Unit 10. Ecological Principles

#Question id: 12106

#Unit 10. Ecological Principles

#Question id: 12108

#Unit 10. Ecological Principles

#Question id: 10234

#Unit 10. Ecological Principles

You observed the two species of barnacles, species 1 and species 2, occupy upper and lower strata of intertidal rocks, respectively. Only when species 1 was removed by you from the upper strata, species 2 could occupy both the upper and lower strata. From the choice given below what would be your inference from these observations.

#Question id: 10235

#Unit 10. Ecological Principles

Following some observation is correct about species of P, Q and R

A) Species P and R have generalized nich while Q has specialized nich

B) Species P and R have specialized nich while Q has generalized nich

C) Species P and R are more prone to extinct than Q species

D) Species Q is more prone to extinct than either P or R species

#Question id: 10236

#Unit 10. Ecological Principles

Following figure represent fundamental and realized nich of species P and Q in gradient of temperature along sea shore. which of the following statement are correct? 

A) Fundamental niche of species P is greater than its realized nich

 B) Fundamental niche of species Q is greater than its realized nich

 C) Species Q is strong competitor than species P

 D) There is no effect on spaced occupied by Q in the presence or absence of species P