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
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
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
Who discovered Restricted endonucleas enzymes?
(a) Smith and Nathane
Answer: (a) Smith and Nathane
DNA obtained for DNA finger printing:
(b) Hair root cells
(c) Body fluids
(d) None of these
Answer: (a) W.B.C.
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
Plasmid is a:
(c) Part of Plasma membrane
(d) Extra chromosomal DNA in bacterial cell
Answer: (d) Extra chromosomal DNA in bacterial cell
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
Restrictipn endonucleases are most widely used in recombinant DNA technology. They are obtained from :
(b) AH prokaryotic cells
(d) Bacterial cells
Answer: (d) Bacterial cells
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
Triticale, first man made cereal crop, has been obtained by crossing wheat with:
(b) Pearl millet
Answer: (d) Barley
Viral genome incroporatcd into host DNA is called:
(d) None of these
Answer: (c) Bacteriophage
DNA element with ability to change its position is called:
Answer: (c) Intron
MCQs of Biology Class 12 Chapter 11 Biotechnology: Principles and Processes
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)
Name the drug used in cancer treatment produced by using biotechnology
Answer: (b) HGH
During ‘gene cloning’ which is called as ‘gene taxi’?
Answer: (b) Plasmid
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
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
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
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
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
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
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.
What was the world’s first ever mammal to be successfully cloned from an adult cell?
Answer: (a) Sheep
Which of the following organelles is associated with genetic , engineering?
Answer: (a) Plasmids
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
The EcoR-1 enzyme is obtained from
Answer: (c) E.Coli
The first artificial plant hybrid was made around 1717 by
(a) Thomas Fair child
(b) De Vries
(d) None of these
Answer: (a) Thomas Fair child
Gene was synthesized in vitro by
Answer: (a) Khorana
Fill in the Blanks
Single cell protein (SCP) provides a valuable rich supplement in ………………. diet.
Answer: Protein, human
Ti plasmid is found in ……………….
Answer: Agrobacterium tumefaciens
Fruit softening in tomato is promoted by the enzyme ………………. which degrades pectin.
Vaccine for ………………. has been recently produced through genetic engineering.
Genetically produced human insulin is named ……………….
Penicillin : Fleming : : Actinomycin : ……………….
Answer: Waksman and Woodruff
Phages infect the ………………. cells.
Viruses are ………………. obligate parasites.
The protein coat of virus is called ……………….
Vitamin B2 was originally obtained from ……………….
Answer: cereals, vegetables and yeast