Biology Quiz 4

The respiration process requires oxygen. The main purpose of respiration is to provide oxygen to the cells at a rate adequate to satisfy their metabolic needs. During respiration, inhaled oxygen is used by the cells to produce energy by the breakdown of glucose molecules.

Human kidney disorder is caused by the pollution of Cadmium. Heavy metals (mercury, lead, cadmium) are among the best-known environmental pollutants causing kidney disease.

Edward Jenner (1749 - 1823) was an English surgeon, who discovered a vaccination for smallpox. It is in fact, the world's first vaccine.

Tuberculosis (TB) is caused by a bacterium called Mycobacterium tuberculosis. The bacteria usually attack the lungs, but TB bacteria can attack any part of the body such as the kidney, spine, and brain.

Birds which swim in water have webbed feet. Ducks, geese, and swans all have webbed feet. The primary use for webbed feet is paddling through the water.

Anadromous fish lives mostly in the ocean but during reproduction go to fresh water stream. Hilsa and Salmon are anadromous fish.

Corpus luteum (CL) is a yellow hormone-secreting body in the female reproductive system which secretes progesterone. It is a completely normal cyst that forms on the ovary every single month in women of childbearing age. This cyst is actually a group of cells inside ovaries that forms during each menstrual cycle. It appears right after an egg leaves the ovary (ovulation).

Necrosis is cell or tissue death within a living body. It is a form of cell injury which results in the premature death of cells in living tissue by autolysis.

Haemolymph is observed in Arthropods. It is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod (invertebrate) body, remaining in direct contact with the animal's tissues.

Estrogen is a female hormone that plays various roles. It helps develop and maintain both the reproductive system and female characteristics, such as breasts and pubic hair.