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SSC
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DSSSB
RO/ARO
HSSC Senior Scientific Asst. / Dt.-01-01-2023 Evening Shift (Cat. No.-1,2,5,6,7,8,10)
📆 December 16, 2024
Total Questions: 100
1.
Transmission Electron Microscope (TEM) provides a resolution of-
(a) 0.2 nm
(b) 10 nm
(c) 15 nm
(d) 50 nm
Correct Answer:
(a) 0.2 nm
2.
Which of the following cycles shows an amphibolic pathway?
(a) Glyoxylate
(b) Citric acid cycle
(c) Glycolysis
(d) Lipid metabolism
Correct Answer:
(b) Citric acid cycle
3.
Which of the following is not an enzyme-catalyzed reaction in metabolism?
(a) Isomerization and elimination
(b) Internal rearrangement
(c) Maillard reaction
(d) Free radical reaction
Correct Answer:
(c) Maillard reaction
4.
Name the inhibition where end products of a biosynthetic pathway inhibit the activity of the first enzyme:
(a) Feedback inhibition
(b) Feedback repression
(c) Allosteric inhibition
(d) Competitive inhibition
Correct Answer:
(a) Feedback inhibition
5.
Which of the following enzyme deficiencies leads to hemolytic anemia?
(a) Glucokinase
(b) Pyruvate kinase
(c) Phosphoglucomutase
(d) Phosphofructokinase
Correct Answer:
(b) Pyruvate kinase
6.
Which of the following is a tricarboxylic acid?
(a) Acetic acid
(b) Succinic acid
(c) Oxaloacetic acid
(d) Citric acid
Correct Answer:
(d) Citric acid
7.
The epigenetic inheritance system has been described as:
(a) Genotype inheritance
(b) Soft inheritance
(c) RNA inheritance
(d) Hard inheritance
Correct Answer:
(b) Soft inheritance
8.
Which of the following explains genetic disorders such as albinism and alkaptonuria?
(a) Recessive inheritance
(b) Dominant genes
(c) X-chromosomes
(d) Y-chromosomes
Correct Answer:
(a) Recessive inheritance
9.
Homozygosity and heterozygosity of an individual can be determined by:
(a) Test-cross
(b) Self-fertilization
(c) Back-cross
(d) All of the above
Correct Answer:
(a) Test-cross
10.
The smallest unit of genetic material that produces a phenotypic effect on mutation is:
(a) gene
(b) muton
(c) nucleic acid
(d) recon
Correct Answer:
(b) muton
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