The hormone that promotes the absorption of glucose into cells is: MCQ with Answer and Explanation

Explanation:
Fats yield about 9 kcal/g of energy, more than double the 4 kcal/g provided by carbohydrates and proteins. Roughage (dietary fiber) adds bulk to the stool and stimulates peristalsis, preventing constipation. Water is an essential nutrient, crucial for hydration, solvent functions, and temperature regulation, though it provides no calories. Thus, statements 1 and 2 are correct.

Explanation:
Lysosomes are membrane-bound vesicles packed with hydrolytic enzymes (proteases, lipases, nucleases) that digest macromolecules, old organelles, and engulfed pathogens. They maintain an acidic pH (about 5.0) for optimal enzyme activity. Peroxisomes detoxify peroxides, mitochondria generate ATP, chloroplasts perform photosynthesis.

Explanation:
The female gametophyte (embryo sac) in angiosperms is typically monosporic (develops from one functional megaspore). The megaspore undergoes three successive mitotic divisions to form an 8-nucleate, 7-celled structure. This includes 3 antipodal cells, 2 synergids, 1 egg cell, and 1 central cell containing 2 polar nuclei. Exam tip: Remember '8 nuclei, 7 cells' because the central cell has 2 nuclei but is 1 cell.