Explanation

Arteries are blood vessels that carry oxygen-rich blood away from the heart to the body.

They have thick, muscular walls to handle the high pressure of blood pumped by the heart.

Explanation

Restriction enzymes are molecular scissors that cut DNA at specific sequences, a critical tool in molecular biology for gene cloning and DNA manipulation.

Explanation

Explanation

Explanation

Protoplasm is the living substance inside a cell, including cytoplasm and nucleus, where water makes up about 70%.

Water is essential for maintaining the structure, function, and chemical reactions in the protoplasm.

Explanation

The word "renal" specifically relates to the kidneys and their functions.

Terms like renal failure or renal artery all refer to kidney-related conditions or structures.

Explanation

HBV is Highly Contagious:

Transmitted through blood, semen, and other body fluids.

10 times more infectious than HCV and 50–100 times more infectious than HIV.

Can survive outside the body for up to 7 days, increasing transmission risk.

Explanation

The human body has around 600 muscles that help in movement, posture, and vital functions.

These include skeletal, smooth, and cardiac muscles.

Explanation

Blood group A can have genotypes IAIA (homozygous) or IAi (heterozygous).

Since IAIA is one valid genotype for blood group A.

Explanation

A polyp is a projecting growth of tissue from a surface in the body, usually a mucous membrane.

Polyps can develop in the: colon and rectum (ear canal).