Science Class 8th
21)Which is heredity material
A. DNA
B. Gene
C. Chromosomes
D. All
22.Basic structural and functional unit of heredity
A. DNA
B. Gene
C. Chromosome
D. All
23)Gene occur in
A. Pair
B. Triplet
C. Single
D. All possible
24)A character is controlled by
A. Single gene
B. Pair of gene
C. Both above
D. None
25)Colored bodies present in nucleus is
A. Gens
B. Chromosomes
C. DNA
26)Chromosomes are made of
A. DNA
B. Gene
C. Cells
D. All
27)Human single chromosome contain
A. One thousand gene
B. Five hundred gene
C. Five thousand gene
D. More than million gen
28)Bacteria is
A. Unicellular
B. Multicellular
C. Both type above
D. None
29)Each bacterium has
A. Many chromosomes
B. Two chromosome
C. Single chromosome
D. Five chromosome
30)Extra chromosomal DNA present bacteria called
A. Plasmid
B. Vector
C. Genetic DNA
D. Both A and B
31)Plasmid is also called
A. Vector
B. Scalar
C. Icon
D. None
32)Plasmid can
A. Not be isolated
B. Difficult in isolation
C. Easy to isolate
D. None
33)Which is true about plasmid
A. Carry foreign gene to bacterial cell
B. known as vector
C. Gene can be attached to it
D. All
34. The genetic manipulation of microorganism for the production of antibiotic, hormones etc is called?
A. Field of biochemistry
B. Biotechnology
C. Biology
D. None
35)Organism that contain a foreign gene in its cell is called?
A. Transgenic
B. Multiple genic
C. Vector
D. Plasmid
36. Stem, Branches, Leaves and flower form system.
A. Shoot
B. Root
C. Both (a) and (b)
D. None of these
36)Foreign gene in bacteria produce
A. Desire product
B. Any product
C. Waste product
D. No produc
37)Why bacteria is used in genetic engineering
A. Simple and easy to grow
B. Divides withib 20 minutes
C. Contain plasmid which easily isolated and inserted to another bacreria
D. All
38)Bacteria produce how many daughter cell in single division
A. Two
B. Five
C. Six
D. One
39)Bacterial cell divides with in
A. 20 minutes
B. One hour
C. 50 minutes
D. 6 hours