CBSE Questions for Class 12 Medical Biology Biotechnology And Its Applications Quiz 8 - MCQExams.com

The following are statements about stem cells:
a) There are unspecialised/undifferentiated cells.
b) They can be transformed into any type of body cell.
c) They can multiply rapidly to form a large number of similar types of cells.
d) They cannot transform into cardiac cells or nerve cells.
e) They are obtained from reproductive progeny only.
The correct statements are ______________.
  • a, b, c only
  • c, d, e only
  • a, c, e only
  • b, c, e only
In transgenics, the expression of transgene in target tissue is determined by
  • Transgene
  • Promotor
  • Reporter
  • Enhancer
Select the correct option for the given statements X, Y, and Z. 
X - A transgenic cow, Rosie produced human protein-enriched milk, which was a nutritionally more balanced product for human babies than natural cow milk. 
Y- Milk produced by transgenic cow Rosie contains 2.4 gm protein/L. 
Z- In the above-mentioned milk in Y statement, alpha-lactalbumin is present.
  • Statements X, Y, Z are true and statement Z does not give correct explanation of X
  • Statements X, Y, Z are true and statement Z gives correct explanation for X
  • Statements X and Y are correct and statement Z is wrong
  • Statements X and Y are wrong and statement Z is correct
Animals that have their DNA manipulated to process and express a foreign gene are called
  • Transgenic animals
  • Somatic hybrids
  • Somaclones
  • Super animals
What is ANDi?
  • Transgenic cow
  • Transgenic dog
  • Transgenic sheep
  • Transgenic monkey
A human protein which is obtained from transgenic animals and is used to treat emphysema is 
  • Alpha-lactalbumin
  • Thyroxine
  • $$\alpha-1$$-antitrypsin
  • Insulin.
Use of bio-resources by multinational companies and other organizations without proper authorization from the concerned countries and  without compensatory payment is termed as _______
  • Resource partitioning
  • Biopiracy
  • Patenting
  • Biofortification
X is the right granted by a government to an inventor to prevent others from commercial use of his invention. When 'X' are granted for biological entities and for products derived from them, these are called 'Y'.
Read the above paragraph and identify X and Y. 
  • X - Patent, Y - biopatent
  • X - piracy, Y- biopiracy
  • X - patent, Y - biopiracy
  • X - piracy, Y - biopatent
Inbreeding for five generations led to production of homozygous transgenic mice. However, these homozygous males or females were infertile. Which of the following approaches is most preferable and economical to obtain heterozygous transgenic animals continuously?
  • More transgenic founder (1st animal) should be generated.
  • Crossing (breeding) of transgenic mice with wild type mice in earlier generations should be done for continued production of transgenic heterozygous offsprings
  • Inbreeding should be avoided after 5th generation
  • Homozygous transgenic mice should be mated with heterozygous transgenic mice for continued production of transgenic heterozygous offsprings.
Which of the following risks are associated with genetically modified foods?
  • Toxicity in human beings
  • Allergic reactions in human beings
  • Antibiotic resistance in microorganisms present in alimentary canal
  • All of these
Given below are certain features of mice. Read them and select why mice is most preferred animal for studies on gene transfer.

(i) Short estrous cycle and gestation period
(ii) Relatively short generation time
(iii) Convenient in vitro fertilisation
(iv) Production of several offspring per pregnancy 
  • (i) and (ii) only
  • (i) only
  • (i), (ii) and (iv) only
  • (i), (ii), (iii) and (iv)
Transgenic plants are
  • Produced after protoplast fusion in artificial medium
  • Grown in artificial medium after hybridization in the field
  • Produced by a somatic embryo in artificial medium
  • Generated by introducing foreign DNA into a cell and regenerating a plant from that cell.
Who described as a need to include nature in our ethical concerns?
  • Wendell berry
  • Aldo Leopold
  • James Hanson
  • Vandana Shiva
What was the amount of Alpha-lactalbumin in the milk of transgenic cow?
  • $$2.4$$ grams/lit
  • $$4.2$$ grams/lit
  • $$3.4$$ grams/lit
  • $$4.3$$ grams/lit
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