Lipid is an organic compound of biological origin that is made up of carbon, hydrogen, and oxygen. Lipid is esters of fatty acids and glycerol of higher aliphatic acids. It is insoluble in water and soluble in fat solvents like chloroform, ether, benzene, and alcohol. Lipids comprise 0.5% of the living body. They are the … Read more
Generally, the seed-producing plants are known as an angiosperm. The word “angiosperm” is derived from the two Greek words, ‘angeion’ meaning case and ‘sperma’ meaning seed. This type of plant produces fruits within which lies the seed or seeds. They can grow in different types of habitats. Based on habitats, they have various names such … Read more
Pinus are coniferous, evergreen resinous trees which are popularly known as pine. They belong to the family Pinaceae under order Coniferales of class Coiniferosida. Different species of the genus Pinus are distributed throughout the temperate and sub-alpine regions of Northern Hemisphere where they form dense forests of evergreen trees. They can grow up to 80 … Read more
Spirogyras are common free-floating freshwater algae that inhabit ponds, pools, tanks, lakes, ditches, etc. The word ‘Spirogyra’ is derived from the two Greek words, ‘Speria’, meaning coil, and ‘gyras’ meaning twisted. Spirogyra has many common names, including blanket weed, water silk, mermaid`s tresses, etc. It grows up to several centimeters in length and 10-100 μm … Read more
Hypophysis or the pituitary gland of human is small pea-shaped gland weighing about 0.5 gm which makes up 80 percent of the gland’s overall weight. It is located under the brain, just behind the bridge of the nose between the hypothalamus and the pineal gland. It is enclosed within a small bony cavity, the sella … Read more
DNA is also known as deoxyribonucleic acid. German biochemist Frederich Miescher first observed DNA in 1869. He termed the material nuclein, which he isolated from pus cells that he collected from bandages discarded by a nearby clinic. Frederick Griffith realized that DNA might hold genetic information in 1928. Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin figured out the double helix … Read more