MCQ Test Flashcards

Which hormone regulates blood glucose levels by promoting its uptake into cells?

Answer: Insulin

Insulin, secreted by beta cells of the pancreas, lowers blood glucose by facilitating cellular glucose uptake.

The hybridization of carbon in methane (CH4) is:

Answer: sp3

In methane, carbon forms four equivalent sigma bonds using sp3 hybrid orbitals in a tetrahedral arrangement.

Which principle states that it is impossible to simultaneously determine the exact position and momentum of a particle?

Answer: Heisenberg Uncertainty Principle

Heisenberg's Uncertainty Principle states that Δx·Δp ≥ h/4π, making simultaneous precise measurements impossible.

Meiosis results in daughter cells with:

Answer: Half the chromosomes of parent

Meiosis undergoes two division cycles producing four haploid (n) cells from one diploid (2n) parent cell.

The speed of light in vacuum is approximately:

Answer: 3 × 10^8 m/s

The speed of light in vacuum is approximately 3 × 10^8 m/s (299,792,458 m/s exactly).

Which part of the nephron is responsible for filtration of blood?

Answer: Glomerulus

The glomerulus, a capillary network in Bowman's capsule, filters blood under high pressure to form filtrate.

IUPAC name of CH3-CH2-OH is:

Answer: Ethanol

CH3-CH2-OH contains two carbon atoms with a hydroxyl group, making it ethanol by IUPAC nomenclature.