#Question id: 27394
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following has smallest size
#Question id: 15690
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 7289
#Unit 1. Molecules and their Interaction Relevant to Biology
The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?
#Question id: 68
#Unit 1. Molecules and their Interaction Relevant to Biology
Match the following functional groups given in column I with their respective representatives given in column II.
COLUMN I COLUMN II
1. Anhydride a. RCOOR
2. Ether b. ROCOCH3
3. Acetyl c. ROR
4. Amido d. RCOOCOR
5. Ester e. RCONH2
#Question id: 73
#Unit 1. Molecules and their Interaction Relevant to Biology
Match the Variation of Reaction Spontaneity (Sign of ΔG) given in Column I with the Signs of ΔH and ΔS given in column II.
|
COLUMN I |
COLUMN II |
|
|
|
|
ΔH |
ΔS |
ΔG = ΔH – TΔS |
|
1. |
− |
+ |
a. The
reaction is both enthalpically and entropically opposed. It is nonspontaneous
(endergonic) at all temperatures. |
|
2. |
− |
− |
b. The
reaction is enthalpically opposed (endothermic) but entropically favored. It
is spontaneous only at temperatures above T = ΔH/ΔS. |
|
3. |
+ |
+ |
c. The
reaction is enthalpically favored but entropically opposed. It is spontaneous
only at temperatures below T = ΔH/ΔS. |
|
4. |
+ |
− |
d. The
reaction is both enthalpically favored (exothermic) and entropically favored.
It is spontaneous (exergonic) at all temperatures. |
#Question id: 674
#Unit 1. Molecules and their Interaction Relevant to Biology
Proline is not often found in a-helices of proteins because it