The majority of carbon dioxide (CO2) in the blood is transported as: MCQ with Answer and Explanation

Explanation:
The sporozoite is the motile infective stage injected by the female Anopheles mosquito into the human host. It invades liver cells. Gametocytes are the stage taken up by the mosquito, merozoites are released from liver and infect RBCs.

Explanation:
Vitamin A is a fat-soluble vitamin stored primarily in the liver, and excess can lead to toxicity. The B-complex vitamins are water-soluble and generally not stored in the body in significant amounts. Fat-soluble vitamins (A, D, E, K) are stored in body fat and liver, making excess Vitamin D difficult to excrete, potentially causing hypervitaminosis D. Thus, statements 1 and 2 are correct.

Explanation:
Atrial Natriuretic Peptide (ANP) is a hormone secreted by the atrial myocytes (muscle cells) of the heart in response to excessive stretching of the atrial walls, which occurs when blood volume and pressure are high. ANP acts to lower blood pressure and volume by promoting vasodilation and increasing the excretion of sodium (natriuresis) and water by the kidneys. It also inhibits the renin-angiotensin-aldosterone system (RAAS) and the release of ADH.