Biology MCQs

Notes:
Heat and moisture conditions aggravate fungal diseases. Fungal diseases are also known as mycosis.

Notes:
Clostridium beijerinckii is Free-Living Nitrogen-Fixing Bacteria of Biofertilizers. Clostridium beijerinckii are free-living soil bacteria that perform nitrogen fixation.

Notes:
Blue-Green algae are Symbiotic Nitrogen-Fixing Cyanobacteria. Liverworts, cycad roots, fern, and lichens are also some of the Nitrogen-fixing cyanobacteria.

Notes:
The renewable energy source produced by the breakdown of organic matter by some bacteria under anaerobic conditions is called Biogas. This is a mixture of methane, hydrogen, and carbon dioxide.

Notes:
Biotechnology has been defined by The European Federation of Biotechnology (EFB).

Notes:
Composting is defined as the biological degradation process of heterogeneous solid organic materials under controlled moist, self-heating, and aerobic conditions to obtain a stable material that can be used as organic fertilizer. It is formally known as “natural organic reduction”.

Notes:
A wisdom tooth, in humans, is any of the usual four third molars. Wisdom teeth usually appear between the ages of 16 and 25. They are generally thought to be called wisdom teeth because they appear so late – much later than the other teeth, at an age where people are presumably “wiser” than as a child, when the other teeth erupt.

Notes:
Riboflavin is also known as vitamin B2. It is a vitamin found in food and used as a dietary supplement. Food sources include eggs, green vegetables, milk and other dairy product, meat, fish, mushrooms, and almonds. Riboflavin is a water soluble and heat-stable vitamin that the body uses to metabolize fats, protein, and carbohydrates into glucose for energy.

Notes:
The kidneys perform many crucial functions, including: maintaining overall fluid balance. regulating and filtering minerals from blood. filtering waste materials from food, medications, and toxic substances. The renal corpuscle of each kidney nephron has two parts – they are the Glomerulus, which is a network of small blood vessels called capillaries, and the Bowman’s Capsule (also known as the Glomerular Capsule), which is the double-walled epithelial cup within which the glomerulus is contained. A nephron is the basic structural and functional unit of the kidney. They are the microscopic structure composed of a renal corpuscle and a renal tubule. The word nephron is derived from the Greek word – nephros, meaning kidney. There are about millions of nephrons in each human kidney.

Notes:
Pituitary gland only acts pure endocrine gland secreting only hormones. The three others i.e. pancreas and gonads secrete extra cellular enzymes and factors too like gametes by gonads.