In an antibody molecule two heavy chains and two light chains are bonded by:
Correct answer: A. Disulphide bonds
- A. Disulphide bonds
- B. Hydrogen bonds
- C. Phosphodiester bonds
- D. Ionic bonds
Explanation
An antibody molecule consists of four polypeptide chains-two identical light chain and two identical heavy chains-linked by disulfide (-S-S-) bridges
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Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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