MCQOPTIONS
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MCQOPTIONS
This section includes 1212 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called__________? |
| A. | Lipid |
| B. | Carbohydrate |
| C. | Protein |
| D. | Carotein |
| Answer» C. Protein | |
| 1202. |
A cofactor made of inorganic ion which is detachable is called__________________? |
| A. | Prosthetic group |
| B. | Coenzyme |
| C. | Activator |
| D. | Cofactor |
| Answer» D. Cofactor | |
| 1203. |
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 | |
| 1204. |
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 | |
| 1205. |
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 | |
| 1206. |
A-biogenesis means that_____________? |
| A. | Living things originated from bacteria |
| B. | Mycobionts |
| C. | Non-living things |
| D. | None of these |
| Answer» D. None of these | |
| 1207. |
A bacterium with tuft of flagella at both poles is called_____________? |
| A. | Lophotrichus |
| B. | Monotrichous |
| C. | Peritrichous |
| D. | Amphitrichous |
| Answer» E. | |
| 1208. |
95% of the cytoplasm of red blood cells is the___________? |
| A. | Antibodies |
| B. | Hemoglobin |
| C. | Enzymes |
| D. | Proteins |
| Answer» C. Enzymes | |
| 1209. |
95% of the cytoplasm of RBCs is____________? |
| A. | Hemoglobin |
| B. | Enzymes |
| C. | Salts |
| D. | Other proteins |
| Answer» B. Enzymes | |
| 1210. |
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 | |
| 1211. |
7 Secretions are products formed within cell on__________? |
| A. | E.R |
| B. | Golgi bodies |
| C. | Ribosome |
| D. | Nucleus |
| Answer» C. Ribosome | |
| 1212. |
60S and 40S subunit combine to form ________ particle. |
| A. | 100 S |
| B. | 90 S |
| C. | 80 S |
| D. | 70 S |
| Answer» D. 70 S | |