Found 122 Articles for Biology Articles

Introduction Lipoproteins contain both fats and proteins. They are found in both soluble complexes (egg yolk, mammalian blood plasma, etc.) and insoluble ones like cell membranes. It carries cholesterol and triglycerides to different cells of the body. Apart from the genetic condition, lipoproteins levels may be increased due to the intake of excess fats, and some other medical conditions. In this tutorial, we will learn about lipoproteins in depth. Different Forms of Lipoproteins Lipoproteins are round in shape and constitute fats and proteins. It transports cholesterol, a type of lipid in the bloodstream. Cholesterol and triglycerides are two types of ... Read More

Introduction Gonadotropins are heterodimeric peptide hormones that are released by the hypothalamus and pituitary gland. Gonadotropin hormones include Follicle stimulating hormone (FSH), Luteinizing hormone (LH), Chorionic gonadotropin (hCG), and Gonadotropin-releasing hormone (GnRH). FSH and LH are secreted by the anterior pituitary gland while hCG is produced by the placenta. GnRH is the hormone that significantly controls the level of FSH and LH, and is produced by the hypothalamus. These hormones except GnRH consist of the dipeptide chain- alpha and beta. The Alpha chain in all three hormones shares homogeneity while the beta chain is unique having specific receptivity. Follicle-stimulating Hormone ... Read More

Introduction Cancer is the uncontrolled and undifferentiated mass of cells. When our body cells divide out of control and lose the property of contact inhibition, they keep on dividing and form a lump of tissue that doesn’t have an organized structure and is termed "cancer cells." Normal cells grow and divide by the process of cell division, and when they grow old and lose their property of continuous division, they die eventually, but cancer cells undergo continuous division, escaping the process of death. Image Coming soon Lung cancer is a cancer of the lungs. When cells present in the lungs ... Read More

Introduction Oxytocin is a natural hormone that is secreted by the hypothalamus, but it is stored and secreted into the bloodstream by the posterior pituitary gland. It controls various aspects of the male and female reproductive systems as well as human behaviour. Oxytocin is derived from a Greek word that means "quick birth". It is generally considered a female hormone as it is majorly involved in the labour and childbirth process and even lactation. It acts as a neurotransmitter. The fact that it is also called the "love hormone" is because during hugging someone or during sexual activities such ... Read More

Introduction Lizards come under the group of reptiles. There are currently around 5000 species of lizards, some having four legs, and some having two legs. Some of the species do not have legs and resemble snakes, and they are found in a variety of colours. They have a short head, a long body, and a long tail. The largest lizard is the Komodo Dragon, which is about 10 feet long and weighs about 80kg. Most species have movable eyelids, and in some species, there is a clear membrane that does not blink and acts as an eye shield. It protects ... Read More

Introduction Living fossils might be living, but they do not retain the primitive features of their ancestors. Due to the prolonged adaptation, the behavior and survival capacity of living fossils is much more advanced than their ancestors. There are various schools of thought provided by different scientists, that living fossils have many specialized characters like exhibiting non-adaptive radiation, i.e., having low rates of ecological and phenotypic evolution thereby giving them a longer staying power. There are immense educational implications for living fossils in excavating Earth’s evolutionary and biblical records. An organism is referred as “living fossil” if the organism resembles ... Read More

Introduction We need food to stay alive. Food gives us the energy to work, run and play. In addition, it protects us from diseases, heals our wounds, and keeps us healthy. There are five components of food that are essential and they are carbohydrates, fats, protein, vitamins, and minerals. The amount of each of these components depends upon the age and physical activity of a person. Lipids are hydrocarbon molecules. Lipids form the building framework of the structure and function of cells of living organisms. Lipids, due to their nonpolar nature, are insoluble in water. The food rich in lipids ... Read More

Introduction to Lipids The nutrients that are present in the food give us the energy to work, run and play. In addition, protects us from diseases, heals our wounds, and keeps us healthy. There are five components of food that are essential and they are carbohydrates, fats, protein, vitamins, and minerals. Fat is a type of lipid and oily substance present under the skin in adipose tissue. They are broken down to obtain energy. Lipids are hydrocarbon molecules. Lipids form the building framework of the structure and function of cells of living organisms. Due to the nonpolar nature, lipids are ... Read More

Introduction The genetic material in most living organisms is in the form of DNA. It is vast in size with numerous nucleotides arranged in long chains. In order to fit into tiny microscopic cells, the genetic material is tightly interwound. It is circular DNA in prokaryotes while it is long-armed chromosomes in eukaryotes. The small segments of DNA coding specific characteristics are genes. Genes are hereditary units and carry information from parents to offspring. Genes lie in a specified position on chromosome arms called gene locus. Linkage and recombination explain gene inheritance in living organisms. Morgan’s Experiment In 1910, very ... Read More

Introduction Lice are wingless insects that are nourished by the blood of animals. They mainly infect the scalp and skin of mammals as well as birds. Which gives rise to tremendous itching and leads to rash around the hair lines. Head lice are most common and primarily found in children. Lice can multiply very quickly and spread from one person to another. The main reason for the lice infestation is the lack of proper hygiene. Characteristics of lice The general characteristics of lice are listed below. It is a tiny wingless insect that is nourished by the blood of ... Read More