FREE Biology Microbiology and Biotechnology Questions and Answers
What is the main difference between bacteria and viruses?
Bacteria are single-celled organisms that can reproduce on their own, while viruses are non-living particles that need a host cell to replicate.
What is the purpose of a vaccine?
Vaccines introduce harmless parts of a pathogen (or weakened/killed forms) to the body, prompting the immune system to build defenses without causing the disease itself.
Which genetic engineering tool allows precise editing of DNA sequences?
CRISPR-Cas9 is a revolutionary gene-editing technology that enables scientists to modify specific DNA sequences with high precision, widely used in genetic research and biotechnology.
What is the primary purpose of antibiotics?
Antibiotics are drugs designed to treat bacterial infections by killing bacteria or preventing their growth. They do not work against viruses.
Which microorganism is used in the production of bread and alcoholic beverages?
Yeast, specifically Saccharomyces cerevisiae, is a fungus used in fermentation processes. It converts sugars into carbon dioxide (for bread rising) and ethanol (for alcoholic beverages).