In which cell is the respiratory pigment haemoglobin found in humans?
Red blood cells
The question asks which human cell contains the respiratory pigment haemoglobin.
The correct answer is red blood cells (erythrocytes).
Haemoglobin is an iron-containing protein that binds oxygen in the lungs and carries it to the body's tissues, and also helps transport carbon dioxide back.
Its iron content gives red blood cells, and therefore blood, its characteristic red colour.
Blood platelets are cell fragments involved in clotting and do not carry haemoglobin.
Monocytes are white blood cells that fight infection, and nerve cells transmit impulses, so none of these carry the respiratory pigment.
Hence the respiratory pigment haemoglobin is found in Red blood cells.
Which of the following organ is part of central nervous system in humans?
I. Heart
II. Spinal cord
What is the primary function of an artificial kidney for humans?
Which of the following organ can be donated while the donor is alive?
I. Part of a liver
II. Kidney
Deoxygenated blood from the body enters through which of the following chamber of the heart of humans?
The biological catalysts which help in the breakdown of food in humans known as _____.
What term is used for the pressure in the artery of human body during relaxation?
Involuntary actions like salivation and vomiting are regulated by which specific part of the hind-brain?
What is the other name of the tissue fluid in human body?
Which gland controls the functioning of other endocrine glands?
The smallest and longest bones in the human body are ________ and _________, respectively.
Which is NOT a part of the urinary system?
Malaria and Kala Azar are caused by:
The human sex chromosomes determine the gender of the child, with XX being: