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. Karry Mullis
- B. Boyer
- C. Sanger
- D. Cohn
Explanation: Kary Mullis developed the polymerase chain reaction, which repeatedly copies a selected DNA segment through cycles of denaturation, primer…
Correct answer: Karry Mullis- A. Retrovirus
- B. Baculovirus
- C. Salmonella typhimurium
- D. Rhizopus nigricans
Explanation: Retroviruses can be modified to carry genes into higher-organism cells because their normal life cycle includes entry into host cells and…
Correct answer: Retrovirus- A. saccharomyces
- B. Rhizobium
- C. Escherichia
- D. Mycobacterium
Explanation: Escherichia coli is commonly engineered to contain the human insulin gene and then used to produce recombinant insulin in bacterial…
Correct answer: Escherichia- A. staphylococcus
- B. Mycobacterium
- C. Streptococcus
- D. Propionibacterium
Explanation: Acne is commonly associated with Cutibacterium acnes, formerly called Propionibacterium acnes, a bacterium living in skin follicles.
Correct answer: Propionibacterium- A. Isobar
- B. Isohel
- C. Isochore
- D. None of these
Explanation: An isohel is a line joining places that receive equal amounts of sunshine or solar radiation.
Correct answer: Isohel- A. food
- B. mechanical support
- C. shade
- D. None of these
Explanation: Epiphytes grow on other plants mainly to obtain mechanical support and better access to light, while they make their own food by…
Correct answer: mechanical support- A. Bacteria
- B. Fungus
- C. Protozoan
- D. Nematode
Explanation: Athlete's foot, or tinea pedis, is caused by dermatophyte fungi that grow in warm, moist skin areas.
Correct answer: Fungus- A. Blue-green algae
- B. Rhizobium sp.
- C. Mycorrhizal fungi
- D. None of these
Explanation: Blue-green algae, especially cyanobacteria such as Anabaena, can fix atmospheric nitrogen and enrich flooded rice fields.
Correct answer: Blue-green algae- A. Cd
- B. As
- C. Hg
- D. Cu
Explanation: Blackfoot disease is a severe form of arsenic poisoning associated with long-term consumption of arsenic-contaminated water.
Correct answer: As- A. Cancer
- B. Malaria
- C. Typhoid
- D. Lung Disease
Explanation: An oncogene is a gene that can promote uncontrolled cell division when activated or abnormally expressed, contributing to cancer…
Correct answer: Cancer- A. Tuberculosis
- B. Polio
- C. Leprosy
- D. None of these
Explanation: MDT, or multidrug therapy, uses several antibiotics together to treat leprosy and reduce the chance of drug resistance.
Correct answer: Leprosy- A. Koch
- B. Harvey
- C. Hansen
- D. Fleming
Explanation: Gerhard Armauer Hansen identified the bacterium responsible for leprosy, now called Mycobacterium leprae, so it is known as Hansen's…
Correct answer: Hansen- A. Aspergillus
- B. Penicillium
- C. Mucus
- D. None of the above
Explanation: Penicillium forms blue-green or green mould on foods and was the fungus from which penicillin was first obtained.
Correct answer: Penicillium- A. Pharmacology
- B. Medicine
- C. Physiology
- D. Surgery
Explanation: Surgery is the branch of health care concerned with repairing, replacing, removing or otherwise treating body parts through operative…
Correct answer: Surgery- A. Human population growth
- B. Infectious diseases
- C. Addictive drugs
- D. Pollution
- E. All of these
Explanation: Human population growth, infectious diseases, addictive drugs and pollution are all major biological and public-health issues because each…
Correct answer: All of these- A. Samuel Hahnemann
- B. Franz Anton Mesmer
- C. Edward Jenner
- D. Hakim Ajmal Khan
Explanation: Samuel Hahnemann introduced homeopathy in 1796 as a system based on the idea that substances causing symptoms in healthy people could…
Correct answer: Samuel Hahnemann- A. AIDS
- B. Breast Cancer
- C. Tuberculosis
- D. Blood Cancer
Explanation: A mastectomy is the surgical removal of all or part of a breast and is mainly performed as a treatment for breast cancer.
Correct answer: Breast Cancer- A. Chicken farming
- B. Horse forming
- C. Silkworm farming
- D. Honey bee farming
Explanation: Apiculture is the managed rearing and keeping of honey bees, mainly for honey, beeswax and other products.
Correct answer: Honey bee farming- A. Charles Darwin
- B. Robert Hook
- C. Antonie van Leeuwenhoek
- D. None of these
Explanation: Antonie van Leeuwenhoek is commonly called the Father of Microbiology because his microscopes allowed him to observe and describe bacteria…
Correct answer: Antonie van Leeuwenhoek- A. Mg
- B. Cd
- C. Pb
- D. Hg
Explanation: Lead, symbol Pb, was historically used in printing inks and could therefore be present in newspapers.
Correct answer: Pb