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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- A. Releasing haploid embryos
- B. Produce proembryos
- C. Asprine
- D. Quinine
Explanation: The haploid tube cells with in the pollen grains divide, producing proembryos consisting of as many as 20 to 40 cells.
Correct answer: Releasing haploid embryos382. Anther culture:
- A. Direct way to produce plants
- B. Releasing haploid embryos
- C. Produce proembryos
- D. Quinine
Explanation: Tissue culture is the growth of a tissue in an artificial liquid culture medium.
Correct answer: Direct way to produce plants- A. Production of cosmetics
- B. Crossing of different varieties of plants
- C. Corn and wheat protoplasts
- D. Galactosidase
Explanation: Scientists envision that it will be possible to maintain cell suspension cultures in bioreactors for the purpose of producing chemicals…
Correct answer: Production of cosmetics384. Hybridization:
- A. Corn and wheat protoplasts
- B. Galactosidase
- C. Inserted in tobacco protoplast
- D. Crossing of different varieties of plants
Explanation: Traditionally, hybridization, the crossing of different varieties of plants or even species, was used to produce plants with desirable…
Correct answer: Crossing of different varieties of plants385. Luciferase is:
- A. Inserted in tobacco protoplast
- B. Galactosidase
- C. Crossing of different varieties of plants
- D. Production of cosmetics
Explanation: Firely enzyme luciferase was inserted into tobacco protoplast and the adult plants glowed when sprayed with the substrate luciferin .
Correct answer: Inserted in tobacco protoplast386. Infertile plants:
- A. Corn and wheat protoplasts
- B. Crossing of different varieties of plants
- C. Galactosidase
- D. Production of cosmetics
Explanation: Corn and wheat protoplasts produce infertile plants.
Correct answer: Corn and wheat protoplasts- A. Bone marrow transplant
- B. Retrovirus
- C. DNA Fingerprinting
- D. Somatic cells
Explanation: DNA Fingerprinting has nothing to do with gene therapy. Bone marrow transplants, retroviruses, and somatic cells are used to treat…
Correct answer: DNA Fingerprinting- A. DNA cloning
- B. DNA analysis
- C. DNA sequencing
- D. DNA splicing
Explanation: DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal…
Correct answer: DNA analysis- A. Probes
- B. Restriction endonuclease
- C. Mutated DNA
- D. Recombinant DNA
Explanation: Recombinant DNA (or rDNA) is made by combining DNA from two or more sources.
Correct answer: Recombinant DNA390. In the commercial manufacture of insulin, a human gene is inserted into which one of the following?
- A. A chromosome of a human cell
- B. A protein molecule in a yeast cell
- C. The DNA of a bacterium
- D. The nucleic acid in a virus
Explanation: In the commercial manufacture of a human cell, a human gene is inserted into the DNA of a bacterium which then nurtures itself in an…
Correct answer: The DNA of a bacterium- A. Gene therapy
- B. Chemotherapy
- C. Immunotherapy
- D. Radiation therapy
Explanation: Gene therapy is a technique of genetic engineering which involves the replacement of a faulty/disease-causing gene by a normal healthy…
Correct answer: Gene therapy- A. Estrogen
- B. Testosterone
- C. Cortisone
- D. Insulin
Explanation: Insulin is a hormone that regulates blood sugar levels and is essential for the metabolism of carbohydrates.
Correct answer: Insulin- A. Biotechnology
- B. Genetic engineering
- C. Gene therapy
- D. None of these
Explanation: With gene therapy, the treatment or elimination of inherited diseases or physical conditions due to these mutations could become a…
Correct answer: Gene therapy- A. Allele transplant
- B. Physiotherapy
- C. Gene therapy
- D. Mutation
- E. Cloning
Explanation: Gene therapy is an experimental technique that uses an allele to treat or prevent disease,by replacing the defective allele.
Correct answer: Gene therapy- A. Cloning
- B. DNA fingerprinting
- C. Restriction Analysis
- D. Polymorphism
- E. Gene sequencing
Explanation: DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal…
Correct answer: DNA fingerprinting- A. Restriction enzyme
- B. Ligase
- C. Selection of host with rDNA
- D. Multiplication of host with rDNA
Explanation: The copies of recombinatn DNA can be increased by allowing the DNA to replication with host DNA.
Correct answer: Multiplication of host with rDNA- A. Plasmid
- B. Combined DNA
- C. Vector
- D. Recombinant DNA
Explanation: Recombinant DNA technology involves the joining of DNA molecules from two different species.
Correct answer: Recombinant DNA- A. Gel electrophoresis
- B. Polymerase chain reaction
- C. DNA extraction
- D. Recombination
Explanation: Polymerase chain reaction (PCR) is a technique used to rapidly increase the number of copies of specific regions of DNA for further…
Correct answer: Polymerase chain reaction- A. Gene of interest
- B. Molecular scissors
- C. Molecular glue and expression system
- D. All of the above
Explanation: Recombinant DNA technology makes use of all the molecular components mentioned above, as the main purpose of this technology, in simple…
Correct answer: All of the above- A. Employed by forensic scientists to assist in the identification of individuals by their respective type of DNA
- B. Collect all the genes found in one complete set of chromosome
- C. Is a technique to separate different-sized fragments of charge-bearing polymers (proteins, RNA or DNA)
- D. Grows a single cell or a group of cells in glassware on an artificial medium under aseptic conditions
Explanation: Gel electrophoresis is a laboratory method used to separate mixtures of DNA, RNA, or proteins according to molecular size.
Correct answer: Is a technique to separate different-sized fragments of charge-bearing polymers (proteins, RNA or DNA)