General Science One-Liners (Biology) | Most Important For SSC & RAILWAY Exams
📚General Science One-Liners (Biology)📚
🔰The most important role played by Ribosome in the cells is the synthesis of proteins. Ribosomes are composed of special proteins and nucleic acids.
🔰Abscisic Acid plays the most important role in establishing dormancy in seeds. Abscisic Acid has also been found to be present in metazoans, from sponges up to mammals including humans.
🔰Amnesia refers to a loss of memory due to illness, injury, drug abuse or other causes.
🔰Pathogens contain certain chemicals called antigens. When a pathogen enters the human body, the antigens stimulate the lymphocytes to produce antibodies.
🔰Lymphocytes secrete Globulins which are known as antibodies. These antibodies help to fight specific pathogens that attack the body
🔰Plasma is 55% of the blood by volume and constitutes 5% of the body weight.
🔰Plasma is a pale yellow transparent clear fluid which consists of 90-92% water and 8-10% organic and inorganic substances.
🔰Organic substances are mainly plasma proteins viz. albumin, globulin, prothrombin and fibrinogen.
🔰Albumins are responsible for maintenance of osmotic pressure of Blood.
🔰Globulins are chief sites for formation of antibodies; while prothrombin and fibrinogen are essential for clotting of blood.
🔰Each kidney is made of tube like structures called nephrons (renal tubules).
🔰A nephron is the structural and functional unit of the kidney. The cup-shaped upper end called Bowman’s capsule, has a network of capillaries within it called glomerulus.
🔰Glomerulus is a knot of capillaries formed from the artery which brings blood containing wastes and excess of water to the kidney.
🔰Leishmaniasis is a disease caused by protozoan parasites that belong to the genus Leishmania and is transmitted by the bite of certain species of Sandflies. The disease can present in three main ways: cutaneous, mucocutaneous, or visceral.
🔰Meningitis is a disease which is characterized by inflammation of meninges, the covering that lie over the brain and spinal chord is caused by bacteria. The meninges are the three membranes that cover the brain and spinal cord.
🔰Plague is an infectious disease caused by Yersinia pestis bacteria. It is usually found in small mammals and their fleas. The disease is transmitted between animals via their fleas. As it is a zoonotic bacterium, it can also transmit from animals to humans.