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Mitochondria are the 'powerhouses' of the eukaryotic cell. These organelles are the sites of cellular respiration, the metabolic process that generates energy from carbohydrates in the cell. The energy...

Evolution is a constant process that allows life forms to adapt to a changing environment.

How does the environment change, though? 

Well, there are several sources...

The gene to be transcribed s unwound and unzipped using the enzyme DNA helicase which breaks the hydrogen bonds between complementary bases. Activated RNA nucleotides then bind to the exposed complemen...

Three main factors affect the rate of photosynthesis:

Light intensity: Increasing light intensity will increase the rate of photosynthesis, until the maximum amount of li...