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(Substrate) is hydrolysed by (Enzyme). Explain why (Enzyme) catalyses only this reaction. (3 Marks)

Active site of (enzyme) has a specific active site, complementary to (substrate). Only that (substrate) can bind to this active site to form an enzyme substrate complex.
TD
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How does an action potential travel from one neurone to another?

The action potential arriving at the presynaptic membrane causes the voltage gated calcium ion channels on the presynaptic membrane to open. This causes an influx of calcium ions into the presynaptic neurone...
GT
Answered by Gemma T. • Biology tutor
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Describe the process of speciation . Ensure to include details in your answer.

This is a result of natural selection. Natural selection is the result of a barrier, physical such as the ocean or a volanco eruption. This barrier seperates members of a species. One genetic mutation occurs...
TM
Answered by Talia M. • Biology tutor
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Describe the structure of proteins

Proteins are polymers (large molecules) of amino acids joined by peptide bonds. They are formed by condensation reactions, meaning water is a by-product of their formation, and there are different levels. Pr...
IW
Answered by Isla W. • Biology tutor
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What is the difference between the leading and the lagging strand in DNA replication?

DNA replication is a semi-conservative process, which creates an identical replica of an already existing DNA double helix sequence. During DNA replication, the two antiparallel DNA strands are split in to t...
JH
Answered by Jenna H. • Biology tutor
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