Introduction All living things can create new versions of themselves, and each of their cells contains a nucleus that contains chromosomes. Each of the 23 pairs of chromosomes in humans contains thousands of genes. The information that determines the personality or trait passed down from parent to child and shapes an individual’s identity can be […]
Introduction Following cell differentiation and proliferation, cell division is the process through which cells are multiplied. Tissues are groups of cells, and the abnormal growth of tissue in an organism is referred to as a tumour. Tumours typically originate as a result of certain disruptions in cell development and the generation of new cells. When […]
Introduction Electrons encounter resistance when they go through a conductor because of the molecules’ attraction forces. The nature of the material determines how much of this resistance is provided. The resistance of the material determines how much electricity flows as a result of voltage differences. Ohm’s law relates electric current (I), voltage (V), and resistance […]
Introduction The human body contains a variety of endocrine glands that secrete various hormones, each with a unique function. To maintain the body’s normal physiological state, each hormone must be present in sufficient amounts. Any variation in an endocrine gland’s hormone release obviously affects the body’s natural state of health. One adrenal gland is located […]
Introduction Food is necessary for us to get the raw materials and energy needed to carry out metabolic activities. The efficient digestion and absorption of the food ensure the proper assimilation of its nutrients. Only when the digestive system is operating effectively does proper digestion and absorption take place. The digestive tract will be in […]
Introduction There is no life on Earth without reproduction. For an organism to be classified as a living being, it must be able to reproduce. Reproduction of an individual requires replication of DNA, the molecular basis of life. Nature would not have been as diverse if all organisms reproduced asexually, and there would be no […]
Introduction Atoms, which give all other matter in the universe its mass, volume, and resilience to survive changes in its physical state, are responsible for the matter’s mass and volume. Each type of matter, molecule, element, or even chemical, has a unique set of features that aid in understanding how that matter is used in […]
Introduction The rate of change in displacement of a moving object is referred to as its velocity. As a result, velocity is a vector quantity, and the velocity-time graph or velocity-time relation is a graphical representation of its fluctuation with time. A velocity-time graph shows the variation of the object’s velocity with time, under different […]
Introduction The human digestive system performs the function of digestion of food which is required for providing nutrition to the body. Food eaten undergoes a series of processes that break down complex food materials into simpler ones that ultimately provide energy. Absorption is one such process under digestion wherein the simpler nutrient molecules from the […]