Which of the following is not an inhibitory substance governing seed dormancy?
1. Abscisic acid
2. Phenolic acid
3. Para-ascorbic acid
4. Gibberellic acid
Name the enzyme that facilitates opening of DNA helix during transcription.
| 1. | DNA helicase | 2. | DNA polymerase |
| 3. | RNA polymerase | 4. | DNA ligase |
Match the following:
| (a) | Inhibitor of catalytic activity of succinate dehydrogenase | (i) | Ricin |
| (b) | Possess peptide bonds | (ii) | Malonate |
| (c) | Cell wall material in fungi | (iii) | Chitin |
| (d) | Secondary metabolite | (iv) | Collagen |
Choose the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iv) | (iii) | (i) |
Bilaterally symmetrical and acoelomate animals are exemplified by:
| 1. | Platyhelminthes | 2. | Aschelminthes |
| 3. | Annelida | 4. | Ctenophora |
Presence of which of the following conditions in urine is indicative of Diabetes mellitus:
1. Uremia and Renal Calculi
2. Ketonuria and Glycosuria
3. Renal Calculi and Hyperglycaemia
4. Uremia and Ketonuria
Ray florets have:
| 1. | Superior ovary | 2. | Hypogynous ovary |
| 3. | Half-inferior ovary | 4. | Inferior ovary |
Identify the substances having a glycosidic bond and peptide bond, respectively in their structure:
1. Glycerol, trypsin
2. Cellulose, lecithin
3. Inulin, insulin
4. Chitin, cholesterol
Which of the following statements is not correct?
| 1. | The proinsulin has an extra peptide called C-peptide |
| 2. | Functional insulin has A and B chains linked together by hydrogen bonds. |
| 3. | Genetically engineered insulin is produced in E. Coli. |
| 4. | In man, insulin is synthesized as proinsulin. |
Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage . This process occurs at the end of:
1.
2. S phase
3.
4. M phase
Identify the correct statement with regard to phase (Gap 1) of interphase:
| 1. | The reorganisation of all cell components takes place. |
| 2. | The cell is metabolically active and grows but does not replicate its DNA |
| 3. | Nuclear division takes place |
| 4. | DNA synthesis or replication takes place. |
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