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Rhodopsin is the pigment found in rod cells, which consists of cis-retinal and the protein opsin. When the rod cells are kept in darkness, the opsin is uncoupled from the cell surface membrane of the rod ...

The sinoatrial node is a region found on the right atrium which acts as a pacemaker. Cells at the SAN can depolarise (become more positively charged with respect to the outside) and generate electrical ac...

DNA is comprised of many 'building blocks' known as deoxyribose nucleoside triphosphates (dNTPs). Each dNTP is made of a base (adenine, guanine, cytosine or thymine), bonded to a 5-carbon sugar molecule a...

Meiosis is a type of cell division that only occurs in the sex organs, testes and ovaries, mitosis occurs in every cell in the body, these are somatic cells. Daughter cells are the cells that are produced...

The 2 DNA strands are split apart by DNA Helicase by breaking the hydrogen bonds between complementary base pairs, with the sense strand being used as a template. Free RNA nucleotides in the cytoplasm att...