#Question id: 27680
#Unit 1. Structure and Function of Biomolecules
Prediction of the structure of a protein based only on its chemical and physical properties is done by
#Question id: 27681
#Unit 1. Structure and Function of Biomolecules
The structural database for the Structural Classification of Proteins is
#Question id: 7289
#Unit 1. Structure and Function of Biomolecules
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. Structure and Function of Biomolecules
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. Structure and Function of Biomolecules
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. Structure and Function of Biomolecules
Proline is not often found in a-helices of proteins because it