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Science Class 8th

41)Second step in process of gene introduction

A. Cutting gene with restriction enzyme

B. Attaching gene to plasmid

C. Both

D. None

Answer
A

42)Third step in introducing gene into organism

A. Attaching gene to plasmid

B. Cutting gene with enzyme

C. Introducing recombinant

D. All

Answer
D

43)Fourth step is

A. Introducing recommbinant DNA

B. Cutting gene

C. Isolation of gene

D. None

Answer
A

44)Attached gene and plasmid are collectively called

A. Recombinant DNA

B. Mixed gene

C. Mixed DNA

D. All

Answer
A

45)Enzyme used to cut gene is called

A. Restriction enzyme

B. Cutting enzyme

C. Knife

D. Cutter

Answer
A

46)Isolated gene is also called

A. Gene of interest

B. Recombinant gene

C. Both above

D. None

Answer
A

47)Which are product of biotechnology

A. Yogurt,backery products,vinegar

B. Bread,cheese,insuline for diabetic patient

C. Modifief food products,

D. All

Answer
D

48)Which are products of biotechnology

A. Vaccine,antibodies,medicine

B. Biodiesel,washing detergents

C. Sugar,plastic

D. All

Answer
D

49)Genetic change in the genetic organization of organism involve

A. Biochemistry

B. Biotechnology

C. Phsiology

D. Not possuble

Answer
B

50)Genetic change in organism through biotechnology involves

A. Addition of gene

B. Removal of gene

C. Modification of gene

D. All

Answer
D

51)Removal,addition and modification of gene in plant helps in

A. Increase productivity

B. Improve nutritional quality

C. Novel product and disease resistant

D. All

Answer
D

52)The organism whose genes are modified are called

A. Genetically modified organism

B. Transgenic organism

C. Manipulated organism

D. Both A and B

Answer
D

53)Genetically modified microorganism are

A. Ring spot virus resistant GM paoaya

B. Grown in hawaii

C. Both above

D. None

Answer
C

54)Bacterial infection in chicken causes

A. Cancer

B. Visual problem

C. Bone weakening

D. Food poisoning

Answer
D

55)Genetically modified sweet potatoes have been enhanced with

A. Protein

B. Other nutrients

C. Height

D. Both A and B

Answer
D

56)Which one is genetic modification

A. Better quality of fruit

B. Quality vegetables

C. Long shelve life

D. All

Answer
D

57)Bacteria which take in recombinant DNA is called

A. Transgenic bacterium

B. GM bacterium

C. Both above

D. None

Answer
C

58)Genetically modified fishes have

A. Growth harmones

B. Plasma protein

C. Lipids

D. Not exist

Answer
A

59)Genetically modified fishes with growth rate

A. Salmonids

B. Carps

C. Tilapias

D. All

Answer
D

60) Which are/is species of fishes

A. Salmanoid

B. Carps

C. Tilapias

D. All

Answer
D
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