All Free Biology MCQs with Answers

• A. Synthesis of pharmaceutical products
• B. Promoting health in plants
• C. Role in genomic library
• D. Used as biofilter

Explanation: Transgenic bacteria have been produced to promote the health of plants. The industry has found that bacteria can be used as biofilters to prevent airborne chemical pollutants from being vented into the air. Biotechnology products produced by bacteria, such as insulin, human growth hormone, tissue plasminogen activator, hemophilia factor Vm, and hepatitis B vaccine are now in the market.

• A. Pest and herb resistance
• B. Increasing production of crops
• C. Synthesis of human products
• D. All of the above

Explanation: The main purpose in the production of transgenic plants is to produce crops, which have ideal traits, quality, and high yield. Besides being beneficial to the agriculture sector, the plants are found to be able to act as the factory for pharmaceutical protein production

• A. Higher growth rate of animals
• B. Gene pharming
• C. Gene cloning
• D. None of the above

Explanation: Transgenic animals does not has higher growth rate.

• A. Genes are inserted inside the body
• B. Genes are inserted outside the body
• C. Genes are transferred through vectors
• D. None of the above

Explanation: Ex vivo gene therapy involves the genetic modification of cells outside of the body to produce therapeutic factors and their subsequent transplantation back into patients. Various cell types can be genetically engineered.

• A. Genes are inserted inside the body
• B. Genes are inserted outside the body
• C. Genes are transferred through vectors
• D. None of the above

Explanation: In vivo gene therapy is a strategy in which genetic material usually in the form of DNA, is applied to modify the genetic repertoire of target cells for therapeutic goals.

• A. Seeds covered with plastic
• B. Embryo covered with plastic
• C. Embryo covered with gel
• D. None of the above

Explanation: Artificial seeds are artificially encapsulated somatic embryos (usually) or other vegetative parts such as shoot buds, cell aggregates, auxiliary buds, or any other micropropagules which can be sown as a seed and converted into a plant under in vitro or in vivo conditions.

• A. Organisms which respond to environment
• B. Place where bacteria are produced
• C. Control of pollution by bacteria
• D. Absorption of chemicals

Explanation: Recombinant DNA technology is used to produce bacteria that reproduce in large vats called bioreactors.

• A. Effective gene
• B. Faulty gene
• C. Supressive gene
• D. Expressive gene

Explanation: Gene therapy is used to correct defective genes in order to cure a disease or help your body better fight disease. Researchers are investigating several ways to do this, including: Replacing mutated genes. Some cells become diseased because certain genes work incorrectly or no longer work at all.

• A. Less number of copies
• B. Lesser number of copies
• C. More number of copiers
• D. Much more number of copies

Explanation: PCR makes billions of copies of a specific DNA fragment or gene, which allows detection and identification of gene sequences using visual techniques based on size and charge

• A. Vector
• B. Scissors
• C. Regulator
• D. Indicator

Explanation: The DNA molecule to which the gene of interest is integrated for cloning is called a vector. It is a DNA molecule used as a vehicle to artificially carry foreign genetic material into another cell.