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What is chemiosmosis?

If osmosis is the movement of water across a partially permeable membrane, then chemiosmosis is the same, but for chemicals. Let's consider the mitochondria, which has a double membrane envelope, and let's t...
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Answered by Jeremy B. Biology tutor
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How is protein digested in the human gut?

Protein digestion begins in the stomach by the secretion of gastric juice, a combination of Hydrochloric acid and the enzyme Pepsin. Food then passes into the duodenum, or small intestine, where pepsin works...
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How does natural selection work ?

A common misunderstanding is to think that evolution results from a species changing to be better adapted to its environment. Evolution is actually the result of environmental pressures selecting different c...
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Answered by Rafaelle B. Biology tutor
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Explain the difference between the light dependent and light independent reactions of photosynthesis (2 marks).

Light dependent reactions occurs in the thylakoid membrane whereas light independent occurs in the stroma of the chloroplastLight dependent reactions produces the substrates for making ATP whereas ATP is ult...
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What are the 4 stages of aerobic respiration?

Glycolysis Link reactionkrebs cycleoxidative phosphorylation
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