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Question-1
The process of making identical copies of a cell is called:
(A)
Trypsin
(B)
Gene
(C)
Pectin
(D)
Cell cloning
Question-2
Mutations when they arise suddenly in nature are called:
(A)
Mutagens
(B)
Duplication
(C)
Deletion
(D)
Spontaneous mutation
Question-3
DNA regulates the cell metabolism by controlling the synthesis of protein through which type of RNA?
(A)
tRNA
(B)
rRNA
(C)
mRNA
(D)
RNA
Question-4
A long stretch of DNA which contains the instructions for making a single protein or polypeptide is called:
(A)
Amino acid
(B)
Protein
(C)
Gene
(D)
Enzyme
Question-5
Prokaryotic cell lacks nuclear membrane and thus the genetic material is found in a compact structure. What is this called as?
(A)
Nucleotide
(B)
Nucleosome
(C)
Gene
(D)
Mutations
Question-6
Write the name of the zygote that will have four complete chromosome sets.
(A)
Tetraploid
(B)
Triploid
(C)
Polyploidy
(D)
All of these
Question-7
tRNA stands for:
(A)
Transmit RNA
(B)
Transformation RNA
(C)
Transport RNA
(D)
Transfer RNA
Question-8
The inherited disease 'acute intermittent porphyria' is caused by a gene mutation which effects an enzyme:
(A)
Porphobilinogen deaminase
(B)
Glycine
(C)
Coenzyme
(D)
Porphyria
Question-9
The process of producing many identical organism or clone is called:
(A)
Chromosomes
(B)
Oncogenes
(C)
Cloning
(D)
Clone
Question-10
Name the two scientists who invented the structure of DNA molecule.
(A)
James Watson and Francis Crick
(B)
Albert Einstein
(C)
Issac Newton
(D)
C.V. Raman
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
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Gas Exchange
Evolution
Transport in Mammals
Respiration
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