Free Biotechnology MCQs with Answers

• A. Pasteurization
• B. Hydroponic culture technique
• C. Genetic engineering
• D. Biological control techniques

Explanation: Genetic engineering allows breeders to alter specific genes or introduce useful genes, producing organisms with desired traits such as…

• A. Biotechnology
• B. Social biological techniques
• C. Parasitology
• D. Both a and c

Explanation: Insulin production uses biotechnology because genes and biological systems are manipulated to produce a medically useful hormone…

• A. Growth of pathogens
• B. Soil Infertility
• C. Slowing of crops growth
• D. Eradication of disease

Explanation: Crop rotation interrupts the continuous presence of crop-specific pathogens by changing the host plant grown in a field, so…

• A. Hydrodynamics
• B. Hydroponics
• C. Hydrotonics
• D. None of them

Explanation: Hydroponics is the cultivation of plants without ordinary soil, using an aerated nutrient solution that supplies water and mineral ions to…

• A. Penicillin
• B. Cephalosporin
• C. Amino glycosides
• D. Erythromycin

Explanation: Penicillin, discovered by Alexander Fleming in 1928, is conventionally regarded in basic biology as the first discovered antibiotic and…

• A. Culex Mosquito
• B. Culiesta Mosquito
• C. Anopheles Mosquito
• D. Culex & Anopheles Mosquito

Explanation: Malaria is caused by Plasmodium parasites, which are transmitted to humans mainly through the bite of an infected female Anopheles…

• A. Anatomy
• B. Physiology
• C. Parasitology
• D. Social Biology

Explanation: Parasitology is the branch of biology that studies parasites, including their life cycles, modes of transmission, and interactions with…

• A. Human Biology
• B. Environmental Biology
• C. Genetics
• D. Bio-technology

Explanation: Biotechnology applies biological knowledge together with engineering and technological techniques to living organisms, cells, or their…

• A. Social Biology
• B. Marine Biology
• C. Environmental Biology
• D. Fresh Water Biology

Explanation: Marine biology studies organisms living in seas and oceans along with the physical and chemical conditions of marine environments.

• A. culture of finfish
• B. culture of shellfish
• C. culture of aquatic organisms
• D. culture of shrimp and Tilapia

Explanation: Aquaculture is the controlled cultivation or farming of aquatic organisms, including fish, shellfish, algae and other species.

• A. Sheep gut
• B. Cat gut
• C. Kangaroo gut
• D. dog gut

Explanation: Chromic catgut is a surgical absorbable suture traditionally prepared from purified sheep intestinal tissue and treated with chromium…

• A. Transgene
• B. Promoter
• C. Enhancer
• D. Reporter

Explanation: A reporter gene produces an easily detected signal, such as fluorescence or a coloured product, when the transgene is expressed in the…

• A. Using radiolabelled second antibody
• B. Usage of RBCs
• C. Using complement-mediated cell lysis
• D. Addition of substrate that is converted into a coloured end product

Explanation: ELISA uses an enzyme-linked antibody and a substrate that the enzyme converts into a coloured product, allowing the antigen or antibody to…

• A. Endonuclease
• B. Unpaired bases
• C. Calcium ions
• D. Free methylation

Explanation: Restriction enzymes can cut the two DNA strands at staggered positions, leaving short single-stranded overhangs called sticky ends, which…

• A. Gives high yield but no characteristic aroma
• B. Gives high yield and is rich in vitamin A
• C. Does not require chemical fertilizers and growth hormones
• D. Resistant to insects and diseases

Explanation: The improved transgenic basmati rice described here combines increased yield with provitamin A enrichment, a trait associated with Golden…

• A. Brinjal
• B. Tobacco
• C. Rice
• D. Cotton

Explanation: Tobacco was the first plant successfully transformed using recombinant DNA techniques, making it the earliest widely recognised transgenic…

• A. Cell proliferation
• B. Micropropagation
• C. Cell defence
• D. Cell differentiation

Explanation: RNA interference silences specific genes by using small RNA molecules to guide the destruction or blocking of complementary mRNA…

• A. Adenosine deaminase deficiency
• B. Adenosine deficiency
• C. Growth deficiency
• D. Adenine deficiency

Explanation: The first widely recognised clinical gene-therapy trial treated severe combined immunodeficiency caused by adenosine deaminase deficiency…

• A. Can be multiplied in culture
• B. Self-replication in bacterial cells
• C. Can be multiplied in laboratories with the help of enzymes
• D. Replicate freely outside bacterial cells

Explanation: Plasmids are useful cloning vectors because they contain an origin of replication and can replicate independently inside bacterial cells…

• A. Bt-cotton
• B. Bt-brinjal
• C. Golden rice
• D. All

Explanation: Bt cotton, Bt brinjal and Golden Rice are all genetically modified crops because each contains introduced genetic material that gives a…