Array Chapter 3 Science 8th Class MCQ Test Preparation Punjab

Total Questions: 20

Total Marks: 20

Time: 20 Mins

Question # 1

The first recombinant antigen vaccine approved for human use is

DPT vaccine
Var vaccine
Hib vaccine
Hepatitis B vaccine

Question # 2

First biochemical to be produced commercially by microbial cloning and genetic engineering is:

Fertility factor
Interferon
Human insulin
Penicillin

Question # 3

The process of converting environmental pollutants into harmless products by naturally occurring microbes is called.

intrinsic bioremediation
extrinsic bioremediation
exsitu bioremediation

Question # 4

Genetically engineered insulin can be obtained by:

Recombinant DNA technique with the help of E. coli
Techniques not developed till now
The extraction of cows's and pig's pancreas
Two coded insulin genes seperated then incorporated into bacteria

Question # 5

A vector is a plasmid used to transfer the:

cell
gene
nucleus
chromosome

Question # 6

A vector is a plasmid used to transfer the:

Chromosome
Cell
Nucleus
Gene

Question # 7

Recombinant DNA contains DNA from _______.

at least 2 same sources
3 different sources
3 same sources
at least 2 different sources

Question # 8

Plasmids are used in genetic engineering . A plasmid is an extra _______.

chromosomal DNA
chromosome
chromosomal RNA
gene

Question # 9

A recombinant DNA molecule is produced by:

Joining of two DNA fragments
Joining of two or more DNA fragments originating from different organisms
Joining of two or more DNA fragments from same organism
None of these

Question # 10

Are foods derived from genetically modified crops nutritionally superior?

No, they are slightly less healthful than foods from conventional crops.
Yes, they offer some health advantages over foods produced from conventional crops.
Yes, they offer substantial health advantages over foods produced from conventional crops.
No, they are neither better nor worse than foods from conventional crops.
No, foods produced from genetically modified crops are a known health risk.

Question # 11

A vaccine can be:

an antigenic protein
live attenuated pathogen
weakened pathogen
All of these

Question # 12

Current application of gene cloning include:

Cleaning up toxic waste
Manufacturing of human growth hormone
Introducing pest resistance in plants
All of these

Question # 13

Two strands of DNA are held together by _____.

interchain hydrogen bond
Van der waals interaction
ionic interaction
covalent interaction

Question # 14

Genetic engineering is accomplished in three basic steps. 2nd step of genetic engineering is:

Growth of GMO
Expression of gene
Isolation of gene interest
Insertion of gene into vector

Question # 15

Use of living organisms to serve humans is:

Service biology
Biotechnology
Social biology
Human biology

Question # 16

Capability of an organism to resist a particular toxin or disease by action of defense mechanism is called

Immunity
Defense
Ability
Resistance

Question # 17

Environmental biotechnology involves:

The study benefits and hazards associated with GMMs
All of these
Bioremediation
The use of microbes to clean up the environmnet

Question # 18

What does GMO stand for?

Genetically modified organism
Gene modified organism
Gene modified only
Gene multiplier organisms

Question # 19

A nucleotide has component, _____.

phosphate group
pentose sugar, nitrogenous base and phosphate group
pentose sugar
nitrogenous base

Question # 20

_______ is the use of living microorganisms to degrade environmental pollutant.

Bioremediation
Microremediation
Nanoremediation

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