Oxygen Transport | MCQs

Explanation

Human blood is red because haemoglobin,

haemoglobin is carried in the blood and functions to transport oxygen.

Explanation

Blood carries oxygen from the lungs and nutrients from the digestive system to all body cells.

It also removes carbon dioxide and waste products, helping maintain overall body function.

Explanation

Red blood cells (RBCs) are primarily responsible for transporting oxygen from the lungs to various tissues in the body.

They contain a protein called hemoglobin, which binds to oxygen molecules, facilitating their transport.

Explanation

Alveoli are tiny air sacs in the lungs where oxygen enters the blood and carbon dioxide is removed.

Their thin walls and rich capillary network make gas exchange efficient.

Explanation

Red Blood Cells (RBCs) are disc-shaped with a central depression (biconcave), not irregular in shape.

Their regular shape helps efficient oxygen transport throughout the body.

Explanation

Explanation

Explanation

oxygen is delivered by the bulk flow of blood (flow = Q) to the exchange vessels (i.e., capillaries) by virtue of its presence in the blood at concentration [O2]a

increasing blood flow will increase the delivery of oxygen via the blood to the tissues.

ND-7-5-2023

Explanation

Approximately 3% of oxygen is transported through blood plasma.

While the remaining 97% is bound to hemoglobin in red blood cells.

Explanation

Hemoglobin (Hb) is the oxygen-carrying protein in red blood cells (erythrocytes).

It's a globular protein that binds to oxygen in the lungs and releases it to the body's tissues.

Hemoglobin is made up of four subunits: two alpha-globin and two beta-globin chains.