571.
Cell wall is made up of
A
Several layers of microfibils
B
Several micellae
C
Cellulosemolecules
D
Glucosemolecule
Answer :
Several layers of microfibils
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572.
The site for protein synthesis is
A
Ribosome
B
DNA
C
Nucleus
D
Mitochondria
Answer :
Ribosome
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573.
Water is important for the body of animals in
A
Reproduction
B
Keeping the body cooled
C
Working as solvent
D
All of the above
Answer :
Working as solvent
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574.
Diploid number of chromosomes in Man , Black molish and Privet Hedge is
A
44
B
48
C
46
D
42
Answer :
46
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575.
The contribution of cytoplasmic DNA in the total
A
90-99%
B
65-75%
C
5-15%
D
1-5%
Answer :
1-5%
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576.
Retrovirus have genetic material
A
DNA only
B
RNA only
C
DNA or RNA only
D
None of the above
Answer :
RNA only
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577.
Which ion holds the ribosomal subunits togeter
A
Ca+2
B
Mn+2
C
Mg+2
D
Na+
Answer :
Mg+2
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578.
Molecular biology is the study of
A
Structure function and cell reproduction
B
physio biochemical studies of biomolecules
C
Studying tissues under microscope
D
Metabolid activity of life
Answer :
physio biochemical studies of biomolecules
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579.
The back bone of RNA is consists of which of the following sugar
A
Deoxyribonse
B
Ribose
C
Sucrose
D
Maltose
Answer :
Ribose
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580.
In salivary gland chromosomes/polytene chromosomes, pairing is
A
absent
B
occasional
C
formed between nonhomologous chromosomes
D
formed between homologous chromosomes
Answer :
formed between homologous chromosomes
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