Biology

Meiosis- Remember in meiosis produces cell that are genetically different Gametes include sperm cell in males and egg cells in females. They fuse together to form a zygote. One area for confusion is that the diploid number of chromosomes which means that they contain...

DNA This is used to store the genetic information which contains all the genetic information from the fertilised egg. DNA has – deoxyribose sugar, nitrogen containing organic base and a phosphate group. These include four bases- adenine, thiamine, cytosine and guanine. RNA This transfers genetic...

Carbohydrates Monosaccharides Carbohydrates are made from Carbon, Oxygen and Hydrogen. They are divided into 3 groups as monosaccharides, disaccharides and polysaccharides. Monosaccharides are the simplest form of carbohydrates   Disaccharide Disaccharides are made out of two monosaccharides. A glycosidic bond is formed between monosaccharides. A...

ATP Respiration is the process which energy which is released. Cells do not obtain their energy directly from glucose this comes from ATP. ATP is referred to as the energy currency of the cell. ATP consists of the following structure : The nucleotide base adenosine ...

▪Mitosis is nuclear division that produces two genetically identical daughter nuclei, each containing the same number of chromosomes as the parent nucleus. ▪Mitosis a controlled process Interphase ▪Interphase has G1, S and G2 Prophase  the chromosomes condense shorter. the centrioles move to opposite ends of the cell which...

The basics of the nutrient cycles Nutrients are taken up by producers. The producers takes in the nutrients which become organic molecules When the producer is eaten- nutrients go into consumers This then is passed onto other consumers. As producers and consumers die- the molecules are broken down by saprobionitc...

▪79% of the atmosphere is made up of nitrogen. ▪Plants are unable to absorb nitrogen gas directly. ▪Absorption of nitrogen into plants is only as ammonium ions and nitrates. ▪ animals fulfill their nitrogen requirements from other plants and animals. ▪Nitrogen is obtain in soil in the following ways ...