Choose the correctly matched pair:
1. Inner lining of salivary ducts- Ciliated epithelium
2. Moist surface of buccal cavity- Glandular epithelium
3. Tubular parts of nephrons- Cuboidal epithelium
4. Inner surface of bronchioles- Squamous epithelium
In the 'S' phase of the cell cycle:
| 1. | amount of DNA doubles in each cell. |
| 2. | amount of DNA remains the same in each cell |
| 3. | chromosome number is increased |
| 4. | amount of DNA is reduced to half in each cell. |
Select the option which is not correct with respect to enzyme action:
| 1. | Substrate binds with the enzyme at its active site. |
| 2. | Addition of a lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate |
| 3. | A non-competitive inhibitor binds the enzyme at a site distinct from that which binds the substrate |
| 4. | Malonate is a competitive inhibitor of succinic dehydrogenase |
Which one of the following is a non-reducing carbohydrate?
1. Maltose
2. Sucrose
3. Lactose
4. Ribose 5-phosphate
The enzyme recombinase is required at which stage of meiosis:
| 1. | Pachytene | 2. | Zygotene |
| 3. | Diplotene | 4. | Diakinesis |
The initial step in the digestion of milk in an infant is carried out by:
| 1. Lipase | 2. Trypsin |
| 3. Rennin | 4. Pepsin |
Fructose is absorbed into the blood through mucosa cells of intestine by the process called:
1. Active transport
2. Facilitated transport
3. Simple diffusion
4. Co-transport mechanism
Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs:
| 1. | as bicarbonate ions |
| 2. | in the form of dissolved gas molecules |
| 3. | by binding to R.B.C |
| 4. | as carbamino-haemoglobin |
Person with blood group AB is considered as universal recipient because he has:
| 1. | both A and B antigens on RBC but no antibodies in the plasma |
| 2. | both A and B antibodies in the plasma |
| 3. | no antigen on RBC and no antigens in the plasma |
| 4. | both A and B antigens in the plasma but no antibodies |
© 2026 GoodEd Technologies Pvt. Ltd.