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Question-1
Mutations when they arise suddenly in nature are called:
(A)
Mutagens
(B)
Duplication
(C)
Deletion
(D)
Spontaneous mutation
Question-2
The number of chromosomes is patients with ' Down syndrome '.
(A)
46 chromosome
(B)
40 chromosomes
(C)
47 chromosomes
(D)
21 chromosomes
Question-3
In human body, a single cell contains 23 DNA molecules from its father. How many does it contain from its mother?
(A)
46 DNA
(B)
26 DNA
(C)
23 DNA
(D)
20 DNA
Question-4
Transgenies or transgenic organisms are also called:
(A)
Genetically modified
(B)
Transgenic
(C)
Fertilized egg
(D)
Biologically modified
Question-5
Shape of the DNA molecule appears:
(A)
Spider ladder
(B)
Single strand ladder
(C)
Circular
(D)
Rectangle
Question-6
The process of making identical copies of a cell is called:
(A)
Trypsin
(B)
Gene
(C)
Pectin
(D)
Cell cloning
Question-7
Write the name of the zygote that will have four complete chromosome sets.
(A)
Tetraploid
(B)
Triploid
(C)
Polyploidy
(D)
All of these
Question-8
The chemical reactions are called metabolic reactions, and a chain of such reaction is called:
(A)
Mutation
(B)
Enzyme
(C)
Proteins
(D)
Metabolic pathway
Question-9
Polyploidy has an important application in:
(A)
Genetic engineering
(B)
Crop breeding
(C)
Human development
(D)
Human disorders
Question-10
tRNA stands for:
(A)
Transmit RNA
(B)
Transformation RNA
(C)
Transport RNA
(D)
Transfer RNA
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
Transport in Plants
Regulations and Control
DNA and Protein Synthesis
The Molecules of Life
Photosynthesis and Plant Nutrition
Enzymes
Genetics
Cell
Cell Division
Ecology
Animal Nutrition
Reproduction in Animals
Gas Exchange
Evolution
Transport in Mammals
Respiration
Heterotrophic Nutrition
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