Biology Booster

 Excretion:In plants Excretion, the process by which animals and plants rid themselves of waste products and of the nitrogenous by-products of metabolism. Through excretion organisms control osmotic pressure—the balance between inorganic ions and water—and maintain acid-base balance. The process thus promotes homeostasis, the constancy of the organism’s internal environment. Plants have no special … Read more Excretion

 Respiration Respiration is defined as the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction. The physiological definition of respiration is differs from the biochemical definition, which refers to cellular respiration, a metabolic process by which an organism obtains energy … Read more Respiration

 Digestive System Introduction v  The respiratory and circulatory systems work together to provide cells with the oxygen they need for cellular respiration. v  Cells also need glucose for cellular respiration. Glucose is a simple sugar that comes from the food we eat. v  To get glucose from food, digestion must occur. This process … Read more Digestive System (1)

 Control and coordination:Plants and animals All the living organisms respond and react to changes in the environment around them. The changes in the environment to which the organisms respond and react are called stimuli such as light, heat, cold, sound, smell, touch etc. Coordination in plants Coordination refers to ordered working of different … Read more Control And Coordination

 Circulatory System The circulatory system can be compared to a system of interconnected, one-way roads that range from superhighways to back alleys. Like a network of roads, the job of the circulatory system is to allow the transport of materials from one place to another. As described in Figure below, the materials carried … Read more Circulatory System (1)

 Human eye Human eye, in humans, specialized sense organ capable of receiving visual images, which are then carried to the brain. The eye is protected from mechanical injury by being enclosed in a socket, or orbit, which is made up of portions of several of the bones of the skull to form a … Read more Human Eye

 Respiratory quotient: Carbohydrates, fats and protein The respiratory quotient (or RQ or respiratory coefficient), is a dimensionless number used in calculations of basal metabolic rate (BMR) when estimated from carbon dioxide production. It is calculated from the ratio of carbon dioxide produced by the body to oxygen consumed by the body. Such measurements, like … Read more Respiratory Quotient

 :In plants , the process by which animals and plants rid themselves of waste products and of the nitrogenous by-products of metabolism. Through excretion organisms control osmotic pressure—the balance between inorganic ions and water—and maintain acid-base balance. The process thus promotes homeostasis, the constancy of the organism’s internal environment. Plants have no special organs … Read more Excretion

 , nourishment, or aliment, is the supply of materials – food – required by organisms and cells to stay alive. In science and human medicine, nutrition is the science or practice of consuming and utilizing foods. Nutrients are the substances that form foods. These may include the following:  Carbohydrates They provide us with energy … Read more Nutrition

 is an inherited feature on the surface of the red blood cells. A series of related blood types constitutes a blood group system, such as the Rh or ABO system. The frequencies of the ABO and Rh blood types vary from population to population. In the US, the most common type is O+ (meaning … Read more Blood Group