Enzymes are biocatalysts that enhance the speed of biochemical reactions without themselves undergoing any change. They are biomolecules that are synthesized by living cells. They are protein in nature (except …
Pharmacology is a science that studies the effect of a drug and the body’s response to it. It is aimed at bringing therapeutic benefits from the drug. Toxicology is a …
Microvilli were first seen by Granger and Baker in 1950 on intestinal epithelial cells by electron microscopy. They appear as brush bristles on the apical cell surface of some epithelial …
There are many secretory organs in the human body. This includes Endocrine glands Hypothalamus Pituitary gland Thyroid Parathyroid adrenal gland, Pineal gland Thymus gland. Exocrine glands Salivary glands, lachrymal, ceruminous …
The human body is made of many organs with different structures and functions. Of them, there are many hollow organs like Heart Blood vessels (arteries and veins) Stomach Small intestine …
Birds are vertebrate animals that have a distinct ability to fly. Unlike mammals and reptiles, their forelimbs are modified into wings, which make them master the sky. They never live …
The human body has 5 special sense organs which are of immense use to life. These include the Eyes Ears Nose Tongue Skin. They are called special because they have …
Rocks and stones are naturally formed solid matter. They are hard, robust, and long-lasting. They are beneficial to both men and the environment in many ways. Uses of Rocks and …
A root system is part of the plant that holds it to the ground and supply water and other essential nutrients. All the complex formed by the roots of a …
A material can undergo either a chemical change, physical change, or sometimes both. The key differences between chemical and physical change are seen in terms of visible variation in forms. …
