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Free Biotechnology and Health Care MCQs with Answers

233 Biotechnology and Health Care 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 applies genetic engineering, cell culture and recombinant DNA methods to medicine and public health. The material includes production of insulin, vaccines and antibiotics, diagnostic techniques, gene therapy, genetically modified organisms and the ethical concerns surrounding manipulation of human genes.

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233 questions · page 12 of 12

221. Organisms that contain genes from other organism are called

  • A. mutagenic
  • B. transgenic
  • C. glones
  • D. sequencing

Explanation: An organism whose genome has been altered by the introduction of one or more foreign DNA molecules from another species by artificial…

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Correct answer: transgenic

222. Restriction enzymes are of great use in genetic engineering because:

  • A. They cut DNA at specific base sequences
  • B. They cut DNA at multiple random sites
  • C. They help in joining the pieces of DNA
  • D. They are a type of nuclease

Explanation: Restriction enzymes, also known as restriction endonucleases, are proteins that cut DNA at specific sequences called restriction sites.

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Correct answer: They cut DNA at specific base sequences

223. A plant or animal modified by genetic engineering is called:

  • A. Transgenic
  • B. Probe
  • C. Recombinant
  • D. Plasmid

Explanation: These plants and animals are called transgenic or genetically modified organisms, a probe is a single stranded DNA or RNA sequence used to…

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Correct answer: Transgenic

224. Milk sugar is pasteurized by heating for 15 seconds at the temperature of:

  • A. 60 oC
  • B. 71 oC
  • C. 50 oC
  • D. 80 oC

Explanation: Pasteurization of milk, requires temperatures of about 63 °C (145 °F) maintained for 30 minutes or, alternatively, heating to a higher…

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Correct answer: 71 oC

225. The person is over weight of the body mass index is between:

  • A. 15 to 24.9
  • B. 17.5 to 24.9
  • C. 18.5 to 24.9
  • D. 25 to 29.9

Explanation: Body Mass Index (BMI) is a calculation that considers an individual's weight in relation to their height to estimate body fat.

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Correct answer: 25 to 29.9

226. Which one of the following discovered the vaccine for first time against the small pox in 1796.

  • A. Edward Jenner
  • B. Louis Pasteur
  • C. F. H. Herbor
  • D. James Phipps

Explanation: Edward Jenner is credited with developing the first successful smallpox vaccine in 1796.

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Correct answer: Edward Jenner

227. Which one of the following comes into existence when bacterial plasmid naturally modified to produce it?

  • A. pBR 322
  • B. Npq 303
  • C. oSR 210
  • D. kMG 319

Explanation: The correct answer is pBR 322. Plasmids like pBR 322 are naturally occurring extrachromosomal DNA molecules in bacteria that have been…

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Correct answer: pBR 322

228. That 1st field trial of genetically engineered plants occurred in France and USA in:

  • A. 1980
  • B. 1982
  • C. 1984
  • D. 1986

Explanation: The first field trials of genetically engineered plants were conducted in 1986 in France and the USA, focusing on tobacco plants…

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Correct answer: 1986

229. The tissue culture method occur in the following sequence:

  • A. Sterilization -> media preparation -> inoculation -> callus development -> plantlets
  • B. Media preparation -> sterilization -> inoculation -> callus development -> plantlets
  • C. Media preparation -> inoculation -> sterilization -> callus development -> plantlets
  • D. Inoculation -> sterilization -> media preparation -> callus development -> plantlets

Explanation: The correct sequence of the tissue culture method is: Media preparation -> Inoculation -> Sterilization -> Callus development ->…

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Correct answer: Media preparation -> inoculation -> sterilization -> callus development -> plantlets

230. For which purpose are myeloma cells (cancerous B lymphocytes) used in the production of monoclonal antibodies?

  • A. Increased rate of cell division
  • B. Immunization with antigen
  • C. To avoid contamination
  • D. As nutrient in media

Explanation: Multiple myeloma cells are abnormal plasma cells (a type of white blood cell) that build up in the bone marrow and form tumors in many…

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Correct answer: Immunization with antigen

231. The process where DNA fragments transferred to nylon sheet on gel fo is called as:

  • A. Southern blotting
  • B. Northern blotting
  • C. Western blotting
  • D. All of the above

Explanation: The process where DNA fragments are transferred to a nylon sheet on a gel is called Southern blotting.

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Correct answer: Southern blotting

232. The solid part of the milk produced by coagulation in known as curd and the liquid is known as whey, this whey is used as food source for

  • A. Bacteria:
  • B. Yeast:
  • C. Algae:
  • D. Either (A) or (B)

Explanation: Whey, the liquid part of milk that remains after the formation of curds during the cheese-making process, is rich in nutrients and can be…

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Correct answer: Either (A) or (B)

233. The source of restriction enzyme Sam 1 is:

  • A. Streptomyces achrmpogene
  • B. Serratia marcescens
  • C. Streptococcus pyogens
  • D. Staphylococcus aureus

Explanation: So, the restriction enzyme SmaI, which stands for Serratia marcescens enzyme, is derived from the bacterium Serratia marcescens.

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Correct answer: Serratia marcescens
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