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The heart is divided into four chambers: the right atrium, right ventricle, left atrium and left ventricle [insert diagram]. The right side of the heart pumps blood to the lungs. The left side of the heart p...

To answer this question we first need to understand what the function of a nerve cell, or neurone, is. Neurons need to be able to rapidly transmit electrical impulses along their length. They also need to ex...

Example: absorption of sodium ions (Na+) and glucose by cells lining the ileum (a part of the small intestine) 1. Na+ actively transported into the blood from epithelial cells, by the sodium-potassium pump ....

Firstly, during protein synthesis, the DNA is transcribed into mRNA in the nucleus, which then can move out of the nucleus into the cytoplasm. This is where translation occurs, where the mRNA is read and tra...

In mitosis there are four phases: Prophase, Metaphase, Anaphase and Telophase. The first step is early Prophase, where chromosomes condense and become visible through supercoiling and simultaneously spindle ...