Q. No.In an alpha helix secondary structure of a protein, the average number of residues per turn is:
1. (1.15)
2. (2.3)
3. (3.6)
4. (5.4)
1. (1.15)
2. (2.3)
3. (3.6)
4. (5.4)
Lovastatin is a fungal secondary metabolite used in:
1. treating bacterial infections
2. increasing immunity
3. lowering blood cholesterol
4. lowering blood glucose levels
Glycogen has the same composition and structure as:
| 1. | amylose but with more extensive branching |
| 2. | amylose but with less extensive branching |
| 3. | amylopectin but with more extensive branching |
| 4. | amylopectin but with less extensive branching |
The number of water molecules needed to hydrolyze a polymer made of 51 monomers will be:
| 1. 1 | 2. 25 |
| 3. 50 | 4. 51 |
In the tertiary structure of a globular protein, where do you expect to find the amino acids serine and alanine?
| 1. | Serine would be in the interior, and alanine would be on the exterior of the globular protein. |
| 2. | Alanine would be in the interior, and serine would be on the exterior of the globular protein. |
| 3. | Both serine and alanine would be in the interior of the globular protein. |
| 4. | Both serine and alanine would be on the exterior of the globular protein. |
Consider the given two statements:
| I: | A double-stranded DNA rich in G and C needs more energy to be broken than one that is rich in A and T. |
| II: | While the ratio of G to C and A to T in an organism's DNA is fixed, the GC content can vary considerably from one DNA to another. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct and II is incorrect |
| 4. | Both I and II are incorrect |
In the given diagram showing the tertiary structure of a protein, the disulfide bond is shown by the letter:
1. A
2. B
3. C
4. D
In the given graph the curve y shows the presence of an allosteric compound. This compound is acting as a/an:
1. competitive inhibitor.
2. noncompetitive inhibitor.
3. irreversible inhibitor.
4. activator.
Iodine-KI reagent is added to a solution or directly on a potato or other materials such as bread, crackers, or flour. A resultant blue-black color most directly indicates the presence of:
| 1. | Cellulose | 2. | Amylopectin |
| 3. | Amylose | 4. | Sucrose |
The number of peptide bonds in a protein molecule made of 120 amino acids will be:
| 1. | 60 | 2. | 119 |
| 3. | 120 | 4. | 240 |
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