The 'Bohr effect' in human physiology describes the shift in the oxygen dissociation curve of hemoglobin due to changes in: MCQ with Answer and Explanation

Explanation:
Iron (Fe²⁺) is a central component of the heme group in hemoglobin, enabling oxygen binding. Deficiency leads to iron-deficiency anemia, characterized by fatigue, pallor, and reduced oxygen-carrying capacity. Calcium is for bones and clotting, magnesium is a cofactor and in chlorophyll, potassium is for nerve impulses. Iron is obtained from diet (meat, leafy greens).

Explanation:
August Weismann proposed the germ plasm theory, stating that only changes in germ cells (sperm/egg) are inherited, not somatic changes. He cut off tails of mice for many generations but offspring had normal tails, disproving inheritance of acquired characters.

Explanation:
Glucose is a monosaccharide, sucrose a disaccharide (glucose+fructose). Cellulose is a structural polysaccharide, not storage; starch is storage. So 3 is incorrect.