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Home » General Knowledge » General Science » Aptitude Test - 17
1.3. Which of the following class of algae consists of alginic acid in their cell wall component?
A. a) Green algae
B. b) Red algae
C. c) Brown algae
D. a) Green algae
2.Which of the following statement is INCORRECT about superantigens?
A. Viral or bacterial proteins
B. Endogenous by nature
C. Unique binding ability
D. Viral or bacterial proteins
3.Structure of DNA and protein found in the nucleus of eukaryotic cells?
A. Nucleic acid
B. Nucleosome
C. Chromatin
D. Nucleic acid
4.Synthesis of antibodies takes place by which of the following cells?
A. Bone marrow cells
B. T-cells
C. B-cells
D. Bone marrow cells
5.Which of the following is less condensed, less stained portion of chromatin?
A. Metaphase
B. Interphase
C. Heterochromatin
D. Metaphase
6.4. Which of the following spores is motile in nature?
A. a) Zoospores
B. b) Oomycetes
C. c) Aplanospores
D. a) Zoospores
7.The basic structure of antibodies are______
A. Y-shaped
B. X-shaped
C. Linear
D. Y-shaped
8.Name the part of a chromosome where t-loop is found.
A. Telomere
B. Centromere
C. Acromere
D. Telomere
9. Name the heavy chain of immunoglobulin G.
A. μ
B. ε
C. α
D. μ
10.Name the unit of replication?
A. DNA
B. Gene
C. Replicon
D. DNA
11.Which of the following phase is involved in the conversion of chromatin to chromosome?
A. S- phase
B. M- phase
C. G2- phase
D. S- phase
12.6. Which of the following is a seedless vascular plant?
A. a) Gymnosperm
B. b) Bryophytes
C. c) Pteridophytes
D. a) Gymnosperm
13.Name the basic structural unit of chromatin, which is described by R.Kornberg?
A. Scaffold protein
B. Solenoid
C. 30nm fiber
D. Scaffold protein
14.What are protamines?
A. Large size DNA
B. Sequences that are unique
C. Highly repetitive DNA
D. Large size DNA
15.Name the protein, which maintained the condensed structure of chromosomes.
A. HSP
B. SMC
C. Collagen
D. HSP
16.Mark the process which does not involve in histone modification?
A. Acetylation
B. Methylation
C. Phosphorylation
D. Acetylation
17.Double-helix structure of DNA is discovered by?
A. Gobind Khurana
B. Nirenberg
C. Watson and Crick
D. Gobind Khurana
18.What is a mode of replication in E.coli?
A. Intermediate
B. Dispersive
C. Conservative
D. Intermediate
19.7. Which of the following is also known as fruitless plants?
A. a) Gymnosperm
B. b) Bryophytes
C. c) Pteridophytes
D. a) Gymnosperm
20.What is the origin of replication?
A. Particular site at which DNA replication starts
B. Site which prevents initiation
C. Random location on the DNA
D. Particular site at which DNA replication starts
21.How many numbers of replicon is found in E.coli?
A. Five replicon
B. Two replicon
C. Single replicon
D. Five replicon
22.Which of the following protein does not involve in the initiation of replication?
A. DnaA
B. SSB (Single strand binding protein)
C. DnaB
D. DnaA
23.Which of the following protein is required for connecting Okazaki fragments?
A. Scaffold protein
B. Helicase
C. Primase
D. Scaffold protein
24.Name the protein, which is used for termination of replication?
A. DnaC
B. SSB
C. Tus protein
D. DnaC
25.Which of the following would relax negatively supercoiled DNA?
A. DNA gyrase
B. Type I topoisomerase
C. Collagen
D. DNA gyrase
26.8. Double fertilization is a characteristic feature of which of these groups of plants?
A. a) Chlorophyta
B. b) Thallophyta
C. c) Angiosperm
D. a) Chlorophyta
27.Name the protein, which is responsible for the formation of RNA primer?
A. Topoisomerase
B. Gyrase
C. Helicase
D. Topoisomerase
28.Rearrangement of DNA that involves the breakage and reunion of DNA is called?
A. Replication
B. Recombination
C. Translation
D. Replication
29.9. Which of the following is NOT the part of four whorls of flower leaves?
A. a) Calyx
B. b) Corolla
C. c) Androcium
D. a) Calyx
30.Which of the following is NOT true about homologous recombination?
A. Exchange of homologous segments
B. Exchange takes place between two homologous DNA molecules
C. It is also termed as general recombination
D. Exchange of homologous segments
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