The cell wall of fungi is primarily composed of chitin, a tough, complex polysaccharide also known as fungal cellulose. This distinguishes them from plants, whose cell walls are made of cellulose, and bacteria, whose cell walls contain peptidoglycan. Chitin provides structural support and protection to fungal cells.
Explanation:
The liver converts toxic ammonia (from amino acid deamination) into less toxic urea via the urea cycle (ornithine cycle) in hepatocytes. Urea is then excreted by the kidneys. The kidneys filter urea but do not produce it. Pancreas produces enzymes/hormones, spleen filters blood.
Explanation:
HIV specifically infects and destroys CD4+ T cells, leading to immunodeficiency and AIDS. Without treatment, opportunistic infections occur.
Explanation:
Vitamin C deficiency causes scurvy, marked by bleeding gums, poor wound healing, and anemia. Vitamin A deficiency causes night blindness. Vitamin B₁ deficiency causes beriberi. Vitamin D deficiency causes rickets/osteomalacia. Pellagra is due to niacin deficiency. Thus, the correct match is Vitamin C - Scurvy.
No comments yet. Be the first to start the discussion!