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In all the species that reproduce sexually, there are three main mechanisms that contribute to genetic variation:independent assortment of chromosomes, crossing-over, and random fertilization. Independent...
In the every cell of the human body, there is a part called the nucleus - this contains all of the genetic information. In each cell nucleus there are 24 pairs of chromosomes. They come in pairs because w...
A simple way of thinking about why enzymes catalyse only specific reactions is to think of the enzyme and the substrate (the compound the enzyme is acting upon) as a lock and key system. Enzymes have a pa...
Increase temperature means molecules have increased kinetic energy and so move around more . Increasing the frequency and power of collisions leading to more enzyme substrate complexes forming and increas...
It is the powerhouse of the cell. produces energy (ATP) from respiration for the body to use.
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