MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your ECAT & MCAT Entry Test knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A cofactor made of inorganic ion which is detachable is called |
| A. | Prosthetic group |
| B. | Coenzyme |
| C. | Activator |
| D. | Cofactor |
| Answer» D. Cofactor | |
| 2. |
A chemical substance which can react (in place of substrate) with the enzyme but is not transformed into product/s and thus blocks the active site temporarily or permanently is called |
| A. | Co-enzyme |
| B. | Blocker |
| C. | Inhibitor |
| D. | Cofactor |
| Answer» D. Cofactor | |
| 3. |
A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called |
| A. | Substrate |
| B. | Co-factor |
| C. | Inhibitor |
| D. | Promotor |
| Answer» D. Promotor | |
| 4. |
A cell of human being has 46 chromosomes; it divides to form some daughter cells, each having 23 pairs of chromosomes. The division would be |
| A. | Mitosis |
| B. | Meiosis |
| C. | Amitosis |
| D. | Budding |
| Answer» B. Meiosis | |
| 5. |
A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called |
| A. | Phosphodiester linkage |
| B. | Glycosidic bond |
| C. | Peptide bond |
| D. | Hydrogen bond |
| Answer» D. Hydrogen bond | |
| 6. |
A bacterium with tuft of flagella at both poles is called |
| A. | Lophotrichus |
| B. | Monotrichous |
| C. | Peritrichous |
| D. | Amphitrichous |
| Answer» E. | |
| 7. |
95% of the cytoplasm ofred blood cells is the |
| A. | Antibodies |
| B. | Haemoglobin |
| C. | Enzymes |
| D. | Proteins |
| Answer» C. Enzymes | |
| 8. |
95% of the cytoplasm of RBCs is |
| A. | Hemoglobin |
| B. | Enzymes |
| C. | Salts |
| D. | Other proteins |
| Answer» B. Enzymes | |
| 9. |
80% of the food of sponges consists of |
| A. | Detrital organic particles |
| B. | Zooplankton and small animals |
| C. | Phytoplanktons |
| D. | all of these |
| Answer» B. Zooplankton and small animals | |
| 10. |
60S and 40S subunit combine to form ______ particle |
| A. | 100 S |
| B. | 90 S |
| C. | 80 S |
| D. | 70 S |
| Answer» D. 70 S | |
| 11. |
2nd meiotic division in oocyte is completed |
| A. | When ovum is discharged from the ovary |
| B. | When oocyte is fertilized by sperm |
| C. | Just before fertilization |
| D. | Before the onset of menstruation |
| Answer» C. Just before fertilization | |