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How does Haemoglobin work?

Haemoglobin is a protein made up of 4 sub-units. Each sub-unit has a molecule of un-oxygenated Iron. Oxygen covalently bonds to the Iron and is thereby carried by the blood as Oxy-haemoglobin. Oxy-haemogl...

CJ
Answered by Conor J. Biology tutor
10134 Views

Define an organ

A group of similar tissues that work together to perform a particular function.

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Answered by Jonathan J. Biology tutor
3696 Views

What changes happen in the chest to allow us to breath in and out?

Air always moves from an area of higher pressure to an area of lower pressure, an example of this is when there is a puncture in a tyre. The air in the tyre is at higher pressure than normal and so when t...

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Answered by Benjamin G. Biology tutor
2429 Views

What is the difference between a competitive and a non-competitive inhibitor?

Inhibitors are molecules that stop substrates from being able to bind to their enzymes, and therefore inhibit the action of specific enzymes. A competitive inhibitor is an inhibitor which has a si...

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Answered by Sreya C. Biology tutor
20769 Views

A man has a disease caused by a dominant allele. The mother has the disease but the father does not, explain how we know the man is heterozygous for this disease.

So first we must gather the informaton, the disease is caused by a dominant allele, we may call this 'D', the recessive could therefore be 'd'. The mother has the disease, but the father does not. Therefo...

LC
Answered by Lucas C. Biology tutor
3007 Views

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