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Biology
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How does heart muscle contract rhythmically in unison?

The heart is composed of a specialied muscle type called cardiac muscle. This has unique properties such that each muscle cell is connected together by gap junctions in their cell membranes (electrical sy...

JC
Answered by Jonathan C. Biology tutor
5367 Views

What is the difference between a prokaryotic and eukaryotic cell?

There are several key differences between prokaryotic and eukaryotic cells. Eukaryotic cells are found in multicellular plants and animals, whereas prokaryotic cells are found in bacteria and archaea whic...

CM
Answered by Charlotte M. Biology tutor
21498 Views

Briefly describe the environmental effects of nitrogen fertilisers in a body of water

The nitrogen fertiliser would leach into the water. This would cause algae to grow exponentially on the surface of the water, therefore would reduce the amount of...

HB
Answered by Holly B. Biology tutor
2661 Views

How is an enzyme specific for a particular type of molecule?

Enzymes are protein molecules responsible for the catalysis-the increase in the rate of a reaction- of reactions taking place within our body. They are able to catalyse many reactions by their high specif...

HB
Answered by Holly B. Biology tutor
3149 Views

How are coenzymes used in the process of aerobic respiration?

Coenzymes contrary to their name aren't enzymes but are synthesised from vitamins. Their overall purpose is to bind to the active site of a specific enzyme to aid the binding of the complemenatry substrat...

SP
Answered by Sophie P. Biology tutor
18893 Views

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