21.
Experiments on Acetabularia by Hammerling proved the role of
A
cytoplasm in controlling differentiation
B
nucleus in heredity
C
chromosomes in heredity
D
nucleo-cytoplasmic ratio
Answer :
nucleus in heredity
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22.
The helical structure of protein is stabilized by
A
Dipeptide bonds
B
Hydrogen bonds
C
Ether bonds
D
Peptide bonds
Answer :
Hydrogen bonds
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23.
Who first discovered nucleus in cell in 831
A
Robert Hooke
B
Robert Brown
C
Almann
D
Swanson
Answer :
Robert Brown
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24.
The person who first desceribed polyene chromosomes was
A
Balbini
B
Walker & Allen
C
Golgi
D
Waldeyer
Answer :
Balbini
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25.
The main arena of various types of activities of a cell is:
A
plasma membrane
B
mitochondrian
C
cytoplasm
D
nucleus
Answer :
cytoplasm
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26.
Nucleosome is made up of
A
Nonhistone protein + RNA
B
Histone protein and DNA
C
Non-histone and histone protein
D
Phospholipid and protein
Answer :
Histone protein and DNA
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27.
Which of the following is not a pyrimidine N2 base
A
Thymine
B
Cytosine
C
Guanine
D
Uracil
Answer :
Guanine
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28.
Which of the following is main enzym e of plasma membrane
A
TPPase
B
ATPase
C
Peptidyl trnsferase
D
Catalases
Answer :
ATPase
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29.
Sometimes the starting codon in GUG in place of AUG, GUG normally stands for
A
Valine
B
Glycine
C
Methionine
D
Tyrosine
Answer :
Valine
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30.
The first codon discovered by Nirenberg and Mathii was
A
CCC
B
GGG
C
UUU
D
AAA
Answer :
UUU
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