The Circulatory System — Biology STD 10 — Question

Red blood cells are also called as erythrocytes. Cellular component of blood, millions of which in the circulation of vertebrates give the blood its characteristic colour and carry oxygen from the lungs to the tissues. The mature human red blood cell is small, round, and biconcave; it appears dumbbell-shaped in profile. The cell is flexible and assumes a bell shape as it passes through extremely small blood vessels. It is covered with a membrane composed of lipids and proteins, lacks a nucleus, and contains hemoglobin-a red ironrich protein that binds oxygen.
Answer the following questions in context to RBC.
(iv) Erythrocytes contain:

_________ are the breakdown products of the haemoglobin of the dead RBCs.

Osmosis takes place when there is:

What are the invasive methods used to prevent pregnancy called?

Blood consists of plasma and cellular elements. The component of the blood which is biconcave in shape are:

In Potato, food is stored in the form of:

Marine fish when thrown under tap water bursts because of: