Excretion in cockroach is performed by all, EXCEPT :
1. Uricose glands
2. Malpighian tubules
3. Fat body
4. Hepatic caeca
1. Uricose glands
2. Malpighian tubules
3. Fat body
4. Hepatic caeca
Subtopic: Cockroach: Excretory System |
74%
Level 2: 60%+
NEET - 2022
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Select the correct statement regarding the mutation theory of evolution:
| 1. | This theory was proposed by Alfred Wallace. |
| 2. | Variations are small directional changes. |
| 3. | Single-step large mutation is a cause of speciation. |
| 4. | Large differences due to mutations arise gradually in a population. |
Subtopic: Mechanism of Evolution |
71%
Level 2: 60%+
NEET - 2022
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Arrange the following formed elements in the decreasing order of their abundance in blood in humans :
Choose the most appropriate answer from the options given below:
| (a) | Platelets | (b) | Neutrophils |
| (c) | Erythrocytes | (d) | Eosinophils |
| (e) | Monocytes | ||
| 1. | (c), (a), (b), (e), (d) | 2. | (c), (b), (a), (e), (d) |
| 3. | (d), (e), (b), (a), (c) | 4. | (a), (c), (b), (d), (e) |
Subtopic: Blood: White Blood Cells |
65%
Level 2: 60%+
NEET - 2022
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In the enzyme which catalyses the breakdown of:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
| 1. | Nicotinamide adenine dinucleotide | 2. | Haem |
| 3. | Zinc | 4. | Niacin |
Subtopic: Enzyme Cofactors |
70%
Level 2: 60%+
NEET - 2022
Hints
Against the codon 5' UAC 3', what would be the sequence of anticodon on tRNA?
| 1. | 5' AUG 3' | 2. | 5' ATG 3' |
| 3. | 5' GTA 3' | 4. | 5' GUA 3 |
Subtopic: Translation |
Level 3: 35%-60%
NEET - 2022
Hints
Select the correct statements.
Choose the most appropriate answer from the options given below :
1. (a), (b) and (e) only
2. (c), (d) and (e) only
3. (b), (c) and (d) only
4. (a), (b) and (c) only
| (a) | Angiotensin II activates the cortex of adrenal gland to release aldosterone. |
| (b) | Aldosterone leads to increase in blood pressure. |
| (c) | ANF acts as a check on renin-angiotensin mechanism. |
| (d) | ADH causes vasodilation. |
| (e) | Vasopressin is released from adenohypophysis. |
1. (a), (b) and (e) only
2. (c), (d) and (e) only
3. (b), (c) and (d) only
4. (a), (b) and (c) only
Subtopic: Autoregulation of GFR |
75%
Level 2: 60%+
NEET - 2022
Hints
With respect to metaphase, which of the following statements is incorrect ?
| 1. | Complete disintegration of nuclear envelope takes place. |
| 2. | Chromosomes are highly condensed. |
| 3. | Metaphase chromosomes are made up of four sister chromatids held together by centromere. |
| 4. | Chromosomes lie at the equator of the cell. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
67%
Level 2: 60%+
NEET - 2022
Hints
Select the incorrect statement with respect to inbreeding of animals.
| 1. | It is used for evolving pure lines in cattle. |
| 2. | It helps in accumulation of superior genes and elimination of less desirable genes. |
| 3. | It decreases homozygosity. |
| 4. | It exposes harmful recessive genes that are eliminated by selection. |
80%
Level 1: 80%+
NEET - 2022
Hints
Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | Cellular barrier | (i) | Interferons |
| (b) | Cytokine barrier | (ii) | Mucus |
| (c) | Physical barrier | (iii) | Neutrophils |
| (d) | Physiological barrier | (iv) | HCI in gastric juice |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (ii) | (iii) | (i) | (iv) |
| 3. | (iii) | (iv) | (ii) | (i) |
| 4. | (iii) | (i) | (ii) | (iv) |
Subtopic: Details of Immunity |
89%
Level 1: 80%+
NEET - 2022
Hints
If A and C make 30% and 20% of DNA, respectively, what will be the percentage composition of T and G ?
| 1. | T : 20%, G : 30% | 2. | T : 30%, G : 20% |
| 3. | T : 30%, G : 30% | 4. | T : 20%, G : 20% |
Subtopic: Nucleic Acid: Nucleotides |
85%
Level 1: 80%+
NEET - 2022
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