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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
Match the column-I with column-II and choose the right option. Column-I Column-II A. Statins I. Yeast B. Ethanol II. Blood-cholesterol lowering agent C. Dung III. Insect-resistant plant D. Bt-cotton IV. Biogas |
| A. | A-II; B-I; C-IV; D-III |
| B. | A-III; B-IV; C-I; D-II |
| C. | A-I; B-II; C-III; D-IV |
| D. | A-IV; B-II; C-I; D-III |
| Answer» B. A-III; B-IV; C-I; D-II | |
| 1152. |
Consider the following four statements (i)-(iv) and select the .option which includes all the correct ones only. (i) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc. (ii) Body weight wise, the micro-organism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day. (iii) Common button mushrooms are a very rich source of vitamin C. (iv) A rice variety has been developed which is very rich in calcium. |
| A. | (iii) and (iv) |
| B. | (i), (iii) and (iv) |
| C. | (ii), (iii) and (iv) |
| D. | (i) and (ii) |
| Answer» E. | |
| 1153. |
Acetic acid is produced with the help of: |
| A. | Albugo species |
| B. | Acetobacter species |
| C. | Aspergillus species |
| D. | Lactobacillus species |
| Answer» C. Aspergillus species | |
| 1154. |
The free-living fungus Trichoderma can be used for: |
| A. | killing insects |
| B. | biological control of plant diseases |
| C. | controlling butterfly caterpillars |
| D. | producing antibiotics |
| Answer» C. controlling butterfly caterpillars | |
| 1155. |
Thurioside is an: |
| A. | Insecticide |
| B. | Fungicide |
| C. | Antibiotic |
| D. | Weedicide |
| Answer» B. Fungicide | |
| 1156. |
Cider is prepared by: |
| A. | action of Lactobacillus on milk. |
| B. | action of Saccharomyces on apple juice. |
| C. | action of Saccharomyces on cane sugar. |
| D. | action of Bacillus on ramie. |
| Answer» C. action of Saccharomyces on cane sugar. | |
| 1157. |
Sewage purification is done by: |
| A. | Microbes |
| B. | Fertilisers |
| C. | Antibiotics |
| D. | Antiseptics |
| Answer» B. Fertilisers | |
| 1158. |
A lake with an inflow of domestic sewage rich in organic waste may result in: |
| A. | drying of the lake very soon due to algal bloom. |
| B. | an increased production of fish due to lot of nutrients. |
| C. | death of fish due to lack of oxygen. |
| D. | increased population of aquatic food web organisation. |
| Answer» D. increased population of aquatic food web organisation. | |
| 1159. |
In sewage treatment process, which part of decomposer bacteria is recycled into starting of the process is called: |
| A. | Cyclic treatment |
| B. | Primary treatment |
| C. | Tertiary treatment |
| D. | Activated sludge treatment |
| Answer» E. | |
| 1160. |
Enzyme immobilisation is: |
| A. | conversion of an active enzyme into inactive form. |
| B. | providing enzyme with protective covering. |
| C. | changing a soluble enzyme into insoluble state. |
| D. | changing pH so that enzyme is not able to carry out its function. |
| Answer» C. changing a soluble enzyme into insoluble state. | |
| 1161. |
Lichen that yields antibiotic is: |
| A. | Ampicillin |
| B. | Oxacillin |
| C. | Both [a] and [b] |
| D. | Tetracycline |
| Answer» D. Tetracycline | |
| 1162. |
Citric acid is obtained from: |
| A. | Aspergillus niger |
| B. | Rhizobium nigricans |
| C. | Penicillium citrinum |
| D. | Lactobacillus bulgaricus |
| Answer» B. Rhizobium nigricans | |
| 1163. |
Cheese and yogurt are products of: |
| A. | Pasteurisation |
| B. | Fermentation |
| C. | Dehydration |
| D. | Distillation |
| Answer» C. Dehydration | |
| 1164. |
Enzymes are immobilised through: |
| A. | covalently attaching to solid support |
| B. | cross-linking |
| C. | entrapping in gel |
| D. | All of the above |
| Answer» E. | |
| 1165. |
Passage of effluents into oxidation tank is for: |
| A. | Primary treatment |
| B. | Secondary treatment |
| C. | Tertiary treatment |
| D. | Both [a] and [b] |
| Answer» C. Tertiary treatment | |
| 1166. |
Most widely used enzyme in detergents is: |
| A. | Amylases |
| B. | Lipases |
| C. | Proteases |
| D. | Glucoisomerases |
| Answer» D. Glucoisomerases | |
| 1167. |
Streptokinase, used as a 'clot buster' is obtained from: |
| A. | Streptococcus |
| B. | Staphylococcus |
| C. | Lactobacillus |
| D. | Saccharomyces |
| Answer» B. Staphylococcus | |
| 1168. |
Probiotics are: |
| A. | live microbial food supplement. |
| B. | cancer inducing microbes. |
| C. | new kind of food allergens. |
| D. | safe antibiotics. |
| Answer» B. cancer inducing microbes. | |
| 1169. |
Which of the following is not an antibiotic? |
| A. | Griseofulvin |
| B. | Cephalosporin |
| C. | Citric acid |
| D. | Streptomycin |
| Answer» D. Streptomycin | |
| 1170. |
Methanogenic bacteria present in: |
| A. | Anaerobic sludge |
| B. | Rumen (a part of stomach) of cattle |
| C. | Both [a] and [b] |
| D. | None of these |
| Answer» D. None of these | |
| 1171. |
Vitamin\[{{B}_{2}}\] is obtained from: |
| A. | Penicillium |
| B. | Acetobacter |
| C. | Aspergillus |
| D. | Ashbya gossypii |
| Answer» E. | |
| 1172. |
Consider the diagram given below and identify the parts labelled as 1,2,3,4, and 5 respectively. |
| A. | Femur, Ilium, Tibia, Pubis and Sacrum |
| B. | Pubis, Tibia, Femur, Ilium and Sacrum |
| C. | Ilium, Femur, Tibia, Pubis and Sacrum |
| D. | Pubis, Femur, Tibia, Ilium and Sacrum |
| Answer» E. | |
| 1173. |
Which of the following statement is not the feature of red muscle fibres? |
| A. | They have plenty of mitochondria. |
| B. | They have high content of myoglobin. |
| C. | They have high amount of sarcoplasmic reticulum. |
| D. | They are called aerobic muscles. |
| Answer» D. They are called aerobic muscles. | |
| 1174. |
Lower jaw in mammals articulates with a bone called: |
| A. | Jugal |
| B. | Alisphenoid |
| C. | Sqamosal |
| D. | Parietal |
| Answer» D. Parietal | |
| 1175. |
Zygomatic arch in Rabbit is formed by: |
| A. | Premaxilla, Maxilla and Palatine |
| B. | Maxilla, Jugal and Squamosal |
| C. | Periotic, Maxilla & Premaxilla |
| D. | All of the above |
| Answer» C. Periotic, Maxilla & Premaxilla | |
| 1176. |
In the given diagramatic representation of muscle contraction, identify the process marked as 1, 2, 3, 4 and 5. |
| A. | 1-Cross bridge, 2-Cross bridge formation, 3-Breakmg of cross bridge, 4-Sliding (rotation), 5-ATP |
| B. | 1-Cross bridge, 2-Cross bridge formation, 3-Sliding / rotation, 4-Breaking of cross bridge, 5-ATP |
| C. | 1-Cross bridge, 2-Breaking of cross bridge, 3-Sliding/rotation, 4-Cross bridge formation, 5-AMP |
| D. | 1-Cross bridge, 2-Cross bridge formation, 3-Sliding/rotation, 4-ADP, 5-Breaking of cross bridge. |
| Answer» C. 1-Cross bridge, 2-Breaking of cross bridge, 3-Sliding/rotation, 4-Cross bridge formation, 5-AMP | |
| 1177. |
Which of the following statements about the striated muscles is incorrect? (i) In the centre of each I-band, is an elastic fibre (Z-line) which bisects it. (ii) Thin filaments are firmly attached to the Z-line. (iii) M-line is a fibrous membrane in the middle of A-bands. (iv) A sarcomere comprises one full A-bands and 2 half I-bands. |
| A. | All of these |
| B. | Only (iv) |
| C. | (i) and (ii) |
| D. | None of these |
| Answer» E. | |
| 1178. |
Sigmoid notch is found in: |
| A. | Tibio-fibula |
| B. | Femur |
| C. | Radio-ulna |
| D. | Humerus |
| Answer» D. Humerus | |
| 1179. |
Choose the letter from the figure that most appropriately corresponds to the structure. (i) A-band (ii) I-band (iii) Sarcomere (iv) H-zone (v) Myosin (vi) Actin, Troponin, Tropomyosin (vii) Z-line |
| A. | (i) - E, (ii) - D, (iii) - F, (iv) - G, (v) - B, (vi) -C, (vii)-A |
| B. | (i) - E, (ii) - D, (iii) - C, (iv) - G, (v) - B, (vi) -A, (vii)-F |
| C. | (i) - E, (ii) - D, (iii) - F, (iv) - G, (v) - C, (vi) -A, (vii)-B |
| D. | (i) - E, (ii) - D, (iii) - F, (iv) - A, (v) - B, (vi) -C, (vii)-G |
| Answer» B. (i) - E, (ii) - D, (iii) - C, (iv) - G, (v) - B, (vi) -A, (vii)-F | |
| 1180. |
The intercalated discs of__ muscle__. |
| A. | Smooth; provide strong mechanical adhesion and rapid electrical communication |
| B. | Skeletal; are the basis for all voluntary muscle action |
| C. | Skeletal; make possible both fast twitches and slow twitches. |
| D. | Cardiac; provide strong mechanical adhesion and rapid electrical communication. |
| Answer» E. | |
| 1181. |
In humans, coccyx is formed by the fusion of: |
| A. | 3 vertebra |
| B. | 4 vertebra |
| C. | 5 vertebra |
| D. | 6 vertebra |
| Answer» C. 5 vertebra | |
| 1182. |
In mammals, the lower jaw is made of: |
| A. | Maxilla |
| B. | Dentary |
| C. | Mandible |
| D. | Ethmoid |
| Answer» D. Ethmoid | |
| 1183. |
Spinal cord passes through: |
| A. | Foramen of Monro |
| B. | Foramen ovale |
| C. | Obturator foramen |
| D. | Foramen magnum |
| Answer» E. | |
| 1184. |
Which of the following does not reveal in the detailed analysis of a cilium from the human respiratory tract? |
| A. | Tubulin |
| B. | Plasmagel |
| C. | Microtubules |
| D. | Axoneme |
| Answer» C. Microtubules | |
| 1185. |
The action potential that triggers a muscle contraction, travels deep within the muscle cell by means of: |
| A. | Sarcoplasmic reticulum |
| B. | Transverse tubules |
| C. | Synapse |
| D. | Motor end plates |
| Answer» C. Synapse | |
| 1186. |
Lower jaw of man is made up of: |
| A. | 1 bone |
| B. | 2 bones |
| C. | No bones, only muscles |
| D. | 3 bones |
| Answer» B. 2 bones | |
| 1187. |
Synovial fluid is found in: |
| A. | Cranial cavity |
| B. | Spinal cavity |
| C. | Immovable joints |
| D. | Freely movable joints |
| Answer» E. | |
| 1188. |
Children sing a song that goes 'head, shoulders, knees, and toes...' If they sang the names of the bones, it would be (in order) |
| A. | Hyoid, sternum, patella, and tarsals. |
| B. | Cranial, clavicle, tibia, and carpals. |
| C. | Cranial, scapula, patella, and phalanges. |
| D. | Clavicle, carpals, phalanges, and tarsals. |
| Answer» D. Clavicle, carpals, phalanges, and tarsals. | |
| 1189. |
A motor unit is best described as: |
| A. | all the nerve fibres and muscle fibres in a single muscle bundle. |
| B. | one muscle fibre and its single nerve fibre. |
| C. | a single motor neuron and all the muscle fibres that it innervates. |
| D. | the neuron that provides the CNS with information on the state of contraction of the muscle. |
| Answer» D. the neuron that provides the CNS with information on the state of contraction of the muscle. | |
| 1190. |
Which of the following human skeletal parts are correctly matched with their respective category? Pairs of skeletal parts Category [A] Humerus and ulna Appendicular skeleton [B] Malleus and stapes Ear ossicles [C] Sternum and ribs Axial skeleton [D] Clavicle and glenoid cavity Pelvic girdle |
| A. | A and B only |
| B. | A, B and C only |
| C. | A, B, and D only |
| D. | All of these |
| Answer» C. A, B, and D only | |
| 1191. |
An example of gliding j joint is: |
| A. | Humerus and glenoid cavity |
| B. | Femur and tibio-fibula |
| C. | Occipital condyle and odontoid process |
| D. | Zygapophyses of adjacent vertebrae |
| Answer» E. | |
| 1192. |
The number of 'true ribs' in a man is: |
| A. | 12 pair |
| B. | 7 pair |
| C. | 3 pair |
| D. | 2 pair |
| Answer» C. 3 pair | |
| 1193. |
Which one of the following shortens when a muscle fibre- contracts? |
| A. | Thick filament |
| B. | Sarcomere |
| C. | Myosin molecule |
| D. | thin filament |
| Answer» C. Myosin molecule | |
| 1194. |
The joint where synovial capsule and synovial fluid are lacking is: |
| A. | Carpals |
| B. | Pubic symphysis in females |
| C. | Finger' and toes in males |
| D. | Femur and pelvis in females |
| Answer» C. Finger' and toes in males | |
| 1195. |
Which pair does not possess corresponding bones? |
| A. | Carpals, and tarsals |
| B. | Atlas and coccyx |
| C. | Pectoral girdle and pelvic girdle |
| D. | Humerus and femur |
| Answer» C. Pectoral girdle and pelvic girdle | |
| 1196. |
The vertebral column is connected to the pelvic girdle in the: |
| A. | Coccygeal region |
| B. | Sacral region |
| C. | Lumbar region |
| D. | cervical region |
| Answer» C. Lumbar region | |
| 1197. |
In human beings, the second cervical vertebra helps in rotatory movements of head through knob-like process called: |
| A. | Prezygapophysis |
| B. | Olecranon process |
| C. | Odontoid process |
| D. | Metaphysis |
| Answer» D. Metaphysis | |
| 1198. |
Upon preventing acetylcholine from diffusing across a neuromuscular junction, which of the following will not occur? |
| A. | No action potential will be produced in the affected muscle fibres. |
| B. | The endoplasmic reticulum releases calcium ions (\[C{{a}^{2++}}\]) into the cytoplasm. |
| C. | Myosin will not bind to actin in the affected muscle fibre. |
| D. | The affected muscle fibre will fail to contract. |
| Answer» B. The endoplasmic reticulum releases calcium ions (\[C{{a}^{2++}}\]) into the cytoplasm. | |
| 1199. |
In the given diagram of right pectoral girdle and upper arm few structure marked as 1, 2, 3, 4, 5, 6 and 7. Identify the marked structures from the options given below. |
| A. | \[{{1.1}^{st}}\] Vertebra, 2-Scapula, 3-Humerus, 4-Radius, 5-Ulna, 6-Carpals, 7-Metacarpals |
| B. | 1-Scapula, 2-Clavicle, 3-Humerus, 4-Radius, 5-Ulna, 6-Carpals, 7-Metacarpal |
| C. | 1-Ilium, 2-Scapula, 3-Humerus, 4-Radius, 5-Ulna, 6-Carpals, 7-Metacarpals |
| D. | 1-Clavicle, 2-Scapula, 3-Humerus, 4-Radius, 5-Ulna, 6-Carpals, 7-Metacarpals |
| Answer» E. | |
| 1200. |
Which of the following match is incorrect? |
| A. | 8th, 9th and 10th pairs of ribs - Do not articulate directly with the sternum but join the sixth rib with the help of hyaline cartilage. |
| B. | Glenoid cavity - Articulates with the head of the humerus to form the shoulder joint. |
| C. | Fibrous joint - Flat skull bones which fuse end-to-end with the help of dense fibrous connective tissues in the form of sutures to form the cranium. |
| D. | Increase in \[C{{a}^{++}}\] level - Leads to the binding of calcium with a subunit of troponin on actin filaments and thereby remove the masking of active sites for myosin. |
| Answer» B. Glenoid cavity - Articulates with the head of the humerus to form the shoulder joint. | |