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How does the heart pump blood around the body?

The easiest way to think of the human heart is as 2 separate pumps in one loop. The first pump is the right side of the heart, which receives deoxygenated blood from the systemic circulation (the body). This...
AS
Answered by Alice S. • Biology tutor
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Describe how information passes from a relay neurone to a motor neurone. (3 marks)

An impulse stimulates the active release of a neurotransmitter from the relay neurone into the synapse. The neurotransmitter carrying the information from the relay neurone diffuses down the concentration gr...
IM
Answered by Isaac M. • Biology tutor
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Why does Maltase only catalyse Maltose?

Enzymes are proteins with specific tertiary structures. Part of this structure forms an active site. Only the substrate of an enzyme, in this case Maltose, fits/ binds to the active site. This forms an enzym...
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Answered by Georgia S. • Biology tutor
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What is semi-conservative replication?

During DNA replication, the two DNA strands separate and each acts as a template (due to base pairing) for DNA polymerase to use to make the second strand of DNA. As a result, each new DNA molecule has one o...
XW
Answered by Xanthe W. • Biology tutor
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Complete the following equation which summarises the process of photosynthesis and write the equivalent word equation below your answer …..CO… + 6 ……… --> C………… + 6 ….

6CO2 + 6H2O --> C6H12O6 + 6O2 Carbon dioxide + Water ---> Glucose + Oxygen
EC
Answered by Emily C. • Biology tutor
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