Biology - Study Mode

[#966] Life of red blood cells in the body is
Correct Answer

(B) 120 days

Explanation

Solution: Human red blood cells (RBC), after differentiating from erythroblasts in the bone marrow, are released into the blood and survive in the circulation for approximately 120 days. In humans and some other species, RBC normally survive in a nonrandom manner.

[#967] The upper chambers of the heart are the
Correct Answer

(B) Atria

Explanation

Solution: The upper chambers of the heart are the atria.

[#968] Purification of blood takes place in
Correct Answer

(C) Kidney

Explanation

Solution: Purification of blood takes place in kidney.

[#969] Fully mature human RBCs has
Correct Answer

(B) No nucleus

Explanation

Solution: Fully mature human RBCs has no nucleus.

[#970] Which of the following blood group is universal donor?
Correct Answer

(B) O

Explanation

Solution: For emergency transfusions, blood group type O negative blood is the variety of blood that has the lowest risk of causing serious reactions for most people who receive it. Because of this, it's sometimes called the universal blood donor type.