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What ever happened to birds’ teeth? Ever since a fossil of the ancient bird Archaeopteryx was discovered in 1861, scientists have known that avian ancestors once had teeth while birds today lack those pearly whites. But when birds “lost their teeth” has remained a mystery — until now. A new study suggests that the common […]
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Biology, SS 2 Week: 1 Topic: What is a Cell? Introduction – What is a Cell? The cell was discovered by Robert Hooke in 1665, who named the biological unit for its resemblance to cells inhabited by Christian monks in a monastery. Cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann,
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Biology, Week: 2 Topic: Structure of Plant and Animal Cell The cell is composed of protoplasm which can be divided into two main parts namely; The cytoplasm The nucleus Each cell is bounded by a thin membrane. The cytoplasms are fluid materials that consist of cytoplasmic organelles such as Lysosome, golgi bodies, endoplasmic reticulum, and
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GENETICS Genetics is defined as the scientific study of heredity and variation in living things. Heredity: Heredity or Inheritance is defined as the transmission and expression of characters or traits in organisms from parents to offspring. It is observed that the offspring of man and other animals and plants usually resemble one another. This is
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In secondary school, the time eventually comes when you are taught Reproduction in Biology class. Yes, that momentous time when before the whole class, your teacher says things about your bodies and even draws them on the board! If you haven’t had this experience yet, trust me, your time will come. And as a homage
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Introduction Growth is a permanent increase in size and complexity of an organism during development from embryo to maturity, as a result of cell division. Growth is an anabolic process. For it to occur, the cell needs plenty of food to provide the necessary energy and materials for building up new protoplasm. In a unicellular
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Biology, SS 2 Week: 10 Topic: Reproductive System Introduction The reproductive system or genital system is a system of sex organs within an organism which work together for the purpose of reproduction. Reproduction is a process involving the coming to life of new organisms either from one parent or a pair of parent organisms. Reproduction
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Respiratory System Introduction Respiration is the breakdown (oxidation) of digested food mostly (carbohydrate and fat), with oxygen from the air taken in the cells of animals to release energy and produce carbon dioxide. Parts of Respiratory System These are made up of all the organs working together to supply the blood cells with oxygen and
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Topic: Environmental Conservation and Safety (Refuse) Introduction The environment is said to be safe when it is free of objects that can cause accidents, objects such as broken bottles and plates, broken furniture, drugs and medicine, slippery floor, kitchen knives, empty cans with sharp edges, broken staircases and steps. Sewage: Refers to human solid and liquid
Our body is amazing. It has lots of mysteries and capabilities even beyond the knowledge of scientists and doctors. In this post, we are going to list 10 amazing facts about human body. 10: Every atom of our body is said to be billions of years old and our body is about 70 percent water.
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