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Use your knowledge of the movement of water to explain why honey has antibacterial properties

Honey has a lower water potential than the water inside bacterial cells due to its high ionic content.Water moves by osmosis from areas of higher water potential to areas of lower water potential.Therefore, ...
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Answered by Sanskriti S. • Biology tutor
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Describe the differences between noncompetitive and competitive inhibition of enzymes.

The key differences here are where the inhibitor binds to the enzyme, competitive bind to the active site and as such compete directly with the normal substrate of the enzyme. Noncompetitive bind to a site o...
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Answered by Thomas B. • Biology tutor
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The MMR vaccine gives protection against measles, mumps and rubella. How? (4 marks)

. Vaccine contains antigens from the pathogens . This is recognised by helper T cells which activates other helper T cells and B cells . B cells undergo clonal selection and produce memory + plasma cells . P...
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Answered by Mohit V. • Biology tutor
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Explain how a change in the primary structure may result in a non functional enzyme

A change in the primary structure means there has been a change in the amino acid sequence.This may cause different hydrogen bonding to occur, leading to a different secondary structure.This may lead to diff...
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Answered by Sanskriti S. • Biology tutor
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Effect of non-competitive inhibitor (on enzyme activity) on enzyme catalysed reaction

Binds on to enzyme at a site that is not the active sitechanges the tertiary structure of the active sitesubstrate cannot bindinhibits enzyme activity
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Answered by Kelvin C. • Biology tutor
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