Biology Booster

 composition and function of blood Blood makes up about 8% of the human body weight. It contains erythrocytes, leucocytes, thrombocytes (platelets) and plasma. The volume percentage of all blood cells in the whole blood is about 45% of adults (hematocrit). The rest consists of liquid plasma (e.g. water, plasma proteins, electrolytes etc.). The … Read more Composition And Function Of Blood

 Nervous system of human being The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. It is essentially the body’s electrical wiring. Structurally, the nervous system has two components: the central nervous system and the peripheral nervous system. According … Read more Nervous System Of Human Being

 Epidemic diseases Complete information on major types of epidemics in India India is endemic to many diseases such as Malaria, Kala-azar, Cholera, Tuberculosis. These erupt in epidemic form when conditions are favorable for their spread. Epidemics are disasters by themselves but these can emerge in the aftermath of other disasters as well. In … Read more Epidemic Diseases

 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