Biology MCQs for Class 12 Chapter wise with Answers Download Free PDF: MCQs of biology class 12 Chapter 11 Biotechnology: Principles and Processes is very important for the students who want to get good marks in their CBSE RBSE NCERT Board Exams. Neet MCQ
MCQs of Biology Class 12 Chapter 11 Biotechnology: Principles and Processes with answers PDF Download
Question 1.
Transgenic plants are develop by:
(a) Introducing of foreign fenes
(b) Clone and genetically modified genes
(c) Genetic engineering
(d) Purified genes
Answer: (a) Introducing of foreign fenes
Question 2.
Two microbes found to be very useful in genetic, engineering are:
(a) Escherichiya Coli and Agrobacterium tumefaciens
(b) Virbio chloerae and tailed bacteriophage
(c) Diplococcus sp and pseudomonas sp.
(d) None of these
Answer: (a) Escherichiya Coli and Agrobacterium tumefaciens
Question 3.
Who discovered Restricted endonucleas enzymes?
(a) Smith and Nathane
(b) Baiger
(c) Waxman
(d) Fleming
Answer: (a) Smith and Nathane
Question 4.
DNA obtained for DNA finger printing:
(a) W.B.C.
(b) Hair root cells
(c) Body fluids
(d) None of these
Answer: (a) W.B.C.
Question 5.
Two microbes found tb be very useful in Genetic Engineering are:
(a) Excherichia coli and Agrobacterium tumefaciens
(b) Vibrio cholarae and a tailed bacteriophage
(c) Diplococcus sp. and Pseudomonas sp.
(d) Crown gall bacterium and Caenorhabdities elegans
Answer: (a) Excherichia coli and Agrobacterium tumefaciens
Question 6.
Plasmid is a:
(a) Fungus
(b) Plasmid
(c) Part of Plasma membrane
(d) Extra chromosomal DNA in bacterial cell
Answer: (d) Extra chromosomal DNA in bacterial cell
Question 7.
Restriction endonuclease cuts:
(a) One stand of DNA at specific site
(b) Both strands of DNA
(c) Both strands of DNA at any site
(d) Single strand of RNA
Answer: (b) Both strands of DNA
Question 8.
Restrictipn endonucleases are most widely used in recombinant DNA technology. They are obtained from :
(a) Plasmids
(b) AH prokaryotic cells
(c) Bacteriophages
(d) Bacterial cells
Answer: (d) Bacterial cells
Question 9.
Golden rice is a promising transgenic crop. When released for cultivation, it will help in :
(a) High lysin content
(b) Pest resistance
(c) High protien content
(d) High vitamin A content
Answer: (d) High vitamin A content
Question 10.
Triticale, first man made cereal crop, has been obtained by crossing wheat with:
(a) Rye
(b) Pearl millet
(c) Sugarcane
(d) Barley
Answer: (d) Barley
Question 11.
Viral genome incroporatcd into host DNA is called:
(a) Prophase
(b) Protophage
(c) Bacteriophage
(d) None of these
Answer: (c) Bacteriophage
Question 12.
DNA element with ability to change its position is called:
(a) Cistron
(b) Transposon
(c) Intron
(d) Ricon
Answer: (c) Intron
MCQs of Biology Class 12 Chapter 11 Biotechnology: Principles and Processes
Question 1.
Micro-organisms can be grown in the bioreactors by
(a) Support growth system
(b) Agitated growth system
(c) Suspended .growth system
(d) Both (a) and (c)
Answer: (d) Both (a) and (c)
Question 2.
Name the drug used in cancer treatment produced by using biotechnology
(a) Terramycin
(b) HGH
(c) Insulin
(d) TSH
(e) Enterferon
Answer: (b) HGH
Question 3.
During ‘gene cloning’ which is called as ‘gene taxi’?
(a) Vaccine
(b) Plasmid
(c) Bacterium
(d) Protozoa
Answer: (b) Plasmid
Question 4.
Hybridoma technology has been successfully used in
(a) production of somatic hybrids
(b) synthesis of monoclonal antibodies
(c) synthesis of haemoglobin
(d) production of alcohol in bulk
Answer: (b) synthesis of monoclonal antibodies
Question 5.
Introduction of food plants developed by genetic engineering is not desirable because
(a) These products are less tasty as compared to the already existing products
(b) The method is costly
(c) Economy of developing countries may suffer.
(d) There is danger of entry of viruses and toxins with introduced crop
Answer: (a) These products are less tasty as compared to the already existing products
Question 6.
Hybridoma cells are
(a) Nervous cells of frog
(b) Hybrid cells resulting from myeloma cells
(c) Only cells having oncogenes
(d) Product of spore formation in bacteria
Answer: (b) Hybrid cells resulting from myeloma cells
Question 7.
The new strain of bacteria produced by biotechnology in alcohol industry is
(a) Escherichia coli
(b) Saccharomyces cerevisiae
(c) Bacillus sabtilis
(d) Pseudomonas putida
Answer: (d) Pseudomonas putida
Question 8.
Important objective of biotechnology in agriculture section is
(a) To produce pest resistant varieties of plants
(b) To increase the nitrogen content
(c) To decrease the seed number
(d) To increase the plant weight
Answer: (a) To produce pest resistant varieties of plants
Question 9.
The two vitamins manufactured biotechnologically are
(a) Vitamin B12 and Vitamin B6
(b) Vitamin B12 and Vitamin B2
(c) Vitamin B6 and Vitamin B2
(d) Vitamin B12 and Vitamin B9
Answer: (b) Vitamin B12 and Vitamin B2
Question 10.
Some pathogenic bacteria develop resistance to antibiotics by
(a) Modifying their cell walls
(b) Developing such enzymes which modify antibiotics
(c) Alter the antibiotics target due to spontaneous mutation
(d) All the above.
Answer: (d) All the above.
Question 11.
What was the world’s first ever mammal to be successfully cloned from an adult cell?
(a) Sheep
(b) Monkey
(c) Cow
(d) Calf
Answer: (a) Sheep
Question 12.
Which of the following organelles is associated with genetic , engineering?
(a) Plasmids
(b) Plastids
(c) Chloroplast
(d) Mitochondria
Answer: (a) Plasmids
Question 13.
What is cDNA?
(a) Circular DNA
(b) Cloned DNA
(c) DNA produced from reverse transcription of RNA
(d) Cytoplasmic DNA
Answer: (c) DNA produced from reverse transcription of RNA
Question 14.
The EcoR-1 enzyme is obtained from
(a) Virus
(b) Salmonella
(c) E.Coli
(d) Penicillium
Answer: (c) E.Coli
Question 15.
The first artificial plant hybrid was made around 1717 by
(a) Thomas Fair child
(b) De Vries
(c) Borlaug
(d) None of these
Answer: (a) Thomas Fair child
Question 16.
Gene was synthesized in vitro by
(a) Khorana
(b) Ochoa
(c) Hollay
(d) Nirenberg
Answer: (a) Khorana
Fill in the Blanks
Question 1.
Single cell protein (SCP) provides a valuable rich supplement in ………………. diet.
Answer: Protein, human
Question 2.
Ti plasmid is found in ……………….
Answer: Agrobacterium tumefaciens
Question 3.
Fruit softening in tomato is promoted by the enzyme ………………. which degrades pectin.
Answer: Polygalacturonase
Question 4.
Vaccine for ………………. has been recently produced through genetic engineering.
Answer: Hepatitis
Question 5.
Genetically produced human insulin is named ……………….
Answer: Humulin
Question 6.
Penicillin : Fleming : : Actinomycin : ……………….
Answer: Waksman and Woodruff
Question 7.
Phages infect the ………………. cells.
Answer: bacterial
Question 8.
Viruses are ………………. obligate parasites.
Answer: intracellular
Question 9.
The protein coat of virus is called ……………….
Answer: capsid
Question 10.
Vitamin B2 was originally obtained from ……………….
Answer: cereals, vegetables and yeast
