Biology

A person with blood group AB is known as the universal recipient because they have both A and B antigens on their red blood cells and no anti-A or anti-B antibodies in their plasma, allowing them to receive blood from any group safely.

The pituitary gland is known as the master gland because it controls the functions of many other endocrine glands by releasing various hormones.

Malaria primarily affects the spleen because the parasite infects red blood cells, leading to spleen enlargement and dysfunction as it filters infected cells from the blood.

Dialysis is a medical treatment used to remove waste products and excess fluid from the blood when the kidneys fail to function properly, making it a treatment for kidney failure.

The primary function of feathers in birds is to provide insulation, helping to preserve body heat. While feathers also aid in flight and coloration, insulation is their fundamental role for survival.

The liver is the largest gland in the human body, responsible for numerous vital functions including detoxification, protein synthesis, and production of biochemicals necessary for digestion.

Individuals with blood group O are called universal donors because their red blood cells lack A and B antigens, allowing their blood to be safely transfused to people of any other blood group without causing an immune reaction.

Vitamin K plays a crucial role in blood clotting by aiding the synthesis of clotting factors in the liver. Vitamins B1, B2, and D do not have this function.

Mitochondria are known as the powerhouses of the cell because they generate most of the cell's supply of ATP, used as a source of chemical energy.

If both parents are heterozygous carriers (heterogeneous normal) for a gene related to diabetes, the chance of their child inheriting the disease (assuming autosomal recessive inheritance) is 1/4, as the child must inherit two recessive alleles to express the condition.