Out of these which of the following is true regarding the propensity of α-helix.

a. any amino acid which can take up desirable ϕ and ψ angle close to -57 and -47 will favour the formation of a α-helix

b. amino acid such a proline and glycine have lowest propensity will favour formation of α-helix.

c. if the resultant change in the value ΔΔG0 is positive then it will favour the formation of α-helix.

d. if the resultant change in the value ΔΔG0 is zero or close to zero then it will favour the formation of α-helix.

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#Question id: 4157

#Unit 3. Fundamental Processes

At the ribosome, the codon and anticodon associate by __.

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#Question id: 12250

#Unit 10. Ecological Principles

Two islands, P and Q, are similar in habitat and other features. They are 100 and 200 km2 in size respectively, but have the same number of species. Which of the following statements can independently explain this observation?

(i)    P is closer to the mainland than Q

(ii)   P is further away from the mainland than Q

(iii)  P has higher speciation rates than Q

(iv) P has lower speciation rates than Q

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#Question id: 4707

#Unit 11. Evolution and Behavior

For which one of the following observations were both Lamarck's hypothesis and Darwin's hypothesis in complete agreement?

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#Question id: 1393

#Unit 4. Cell Communication and Cell Signaling

In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?

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#Question id: 21246

#Unit 7. System Physiology – Animal

The correct sequence of events involved in phototransduction in rods and cones in response to light is: