Free Biotechnology MCQs with Answers
731 Biotechnology MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Biotechnology in health care applies biological organisms, cells or enzymes to diagnose and treat disease. The subject includes recombinant DNA, genetically engineered insulin, vaccines, antibiotics, monoclonal antibodies, gene therapy and techniques such as polymerase chain reaction, while distinguishing therapeutic applications from agricultural and industrial biotechnology.
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Read the Biotechnology notesFree MDCAT chapter notes with key terms731 questions · page 11 of 37
- A. DNA polymerases
- B. DNA ligases
- C. Restriction endonucleases
- D. Reverse transcriptases
Explanation: In molecular biology, complementary DNA (cDNA) is synthesised from an RNA template in a reaction catalysed by the enzyme reverse…
Correct answer: Reverse transcriptases- A. Symmetrically in reverse order
- B. Asymmetrically in reverse order
- C. Symmetrically in same order
- D. Asymmetrically in same order
Explanation: Bacteria produce a variety of restriction enzymes, which cut the DNA at specific sites, charactanzed by specific sequance of DNA arranged…
Correct answer: Symmetrically in reverse order- A. Anther wall
- B. Tapetal layer of anther wall
- C. Connective tissue
- D. Young pollen grains
Explanation: Young pollen grains produced androgenic haploids in anther cultures while anther wall, tapetal layer of anther wall and connective tissue…
Correct answer: Young pollen grains- A. cDNA
- B. Extra chromosomal DNA
- C. Chromosomal DNA
- D. Cytoplasmic DNA
Explanation: cDNA (short for copy DNA, also called complementary DNA) is synthetic DNA that has been transcribed from a specific mRNA through a…
Correct answer: cDNA- A. Pollen grain
- B. Root tips
- C. Young leaves
- D. Endosperm
Explanation: Anther culture is done for production of haploids because anthers contain hapicid microspores (pollen grains) which can be used to…
Correct answer: Pollen grain- A. Theodore Schwann
- B. A.V. Leeuwenhoek
- C. F.C. Steward
- D. Robert Hooke
Explanation: Professor F.C. Steward made significant contributions to the field of plant tissue culture.
Correct answer: F.C. Steward- A. Parthenogenesis
- B. Parthenocarpy
- C. Micropropagation
- D. Grafting
Explanation: Micropropagation is a tissue culture technique used commercially to produce millions of identical seedlings in a short time under…
Correct answer: Micropropagation- A. Gene map
- B. Loci
- C. Alleles
- D. Chromosomes
Explanation: A gene map shows the relative positions of genes (loci) on a chromosome.
Correct answer: Gene map- A. Parthenogenesis
- B. Apomixis
- C. Sexual Reproduction
- D. Asexual Reproduction
Explanation: Cloning produces genetically identical individuals without gamata fusion, so it is a form of asexual reproduction.
Correct answer: Asexual Reproduction- A. Use of surrogate mothers
- B. Superovulation
- C. Artificial insemination
- D. All of these.
Explanation: High milk-yielding cows are produced using superovulation to obtain multiple eggs, artificial insemination to introduce superior male…
Correct answer: All of these.- A. Introduction and mutation
- B. Selection and introduction
- C. Selection and hybridization
- D. Mutation and selection
Explanation: Selection is the process of choosing the plants with desirable characters and then they maintained and those with undesirable characters…
Correct answer: Selection and hybridization212. The fish that feeds on mosquito larvae and is used for the biological control of mosquitoes is:
- A. Gambusia
- B. Cutter fish
- C. Anabus
- D. Rohu
Explanation: The name "mosquitofish" was given because the fish eats mosquito larvae, and has been used more than any other fishes for the biological…
Correct answer: Gambusia- A. Potato and tomato
- B. Shimla mirch and brinjal
- C. Maize and chichinda
- D. Bitter gourd
Explanation: There are several fruits and vegetables that were introduced to India by Europeans during colonial times.
Correct answer: Potato and tomato- A. Grafting
- B. Tissue Culture
- C. Genetic Engineering
- D. Cell Culture
Explanation: Genetic engineering involves the direct manipulation of genetic material (DNA) to achieve practical and beneficial outcomes.
Correct answer: Genetic Engineering- A. Insulin
- B. Interferons
- C. Vaccines
- D. Edible proteins
Explanation: Animal cell culture is widely used today to mass-produce vaccines for diseases like polio, hepatitis, and COVID-19.
Correct answer: Vaccines- A. Cashewnut, potato, rubber
- B. Mango, tea
- C. Tea, rubber, mango
- D. Coffee
Explanation: Crops like cashewnut, potato, and rubber were introduced to India from the New World (Americas), while mango, tea, and coffee are native…
Correct answer: Cashewnut, potato, rubber- A. White revolution
- B. Green revolution
- C. Yellow revolution
- D. Blue revolution
Explanation: First the start of the Green Revolution in Pakistan, Pakistan adopted the technique of using dwarf varieties of grain in the 1960's.
Correct answer: Green revolution- A. Crotalaria juncea and Alhagi camelorum
- B. Calotropis procera and Phyllanthus niruri
- C. Saccharum munja and Lantana camara
- D. Dichanthium annulatum and Azolla nilotica
Explanation: Crotalaria juncea and Alhagi camelorum are used as green manure in crop fields and sandy soils because these plants.
Correct answer: Crotalaria juncea and Alhagi camelorum- A. Meristem culture
- B. Protoplast culture
- C. Embryo rescue
- D. Anther culture
Explanation: Meristem culture is a type of tissue culture technique used labs to eliminate vinuses and other parasites while growing plants in vitro.
Correct answer: Meristem culture- A. 1869
- B. 1899
- C. 1920
- D. 1900
Explanation: This is the correct answer. In 1900, scientists independently rediscovered Mendel's work on inheritance, bringing attention to his…
Correct answer: 1900