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Why does putting honey on a cut kill the bacteria within it?

The water potential in bacterial cells is higher than that of the honey, meaning that water leaves the bacterial cells by osmosis. This loss of water denatures the bacterial cells as it stops metabolic react...
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Answered by Ashleigh H. • Biology tutor
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What is the function of a ribosome within an animal cell?

A ribosome is the centre of protein synthesis within an animal cell. Translation and transcription of DNA takes place within a ribosome, meaning the genes are read and a messengerRNA provides transfer and ri...
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Answered by Ashleigh H. • Biology tutor
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1 a) What is a pathogen? 1 b) How do white blood cells help to defend the body against pathogens?

1 a) a microorganism that causes infectious disease 1 b) White blood cells: - Ingest pathogens - produce antibodies which destroy particular bacteria or viruses - produce antitoxins which counteract the toxi...
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Answered by Lauraa B. • Biology tutor
6497 Views

What is diffusion?

All the cells in our body communicate constantly with their surrounding environment in order to feed and excrete their wastes. Various substances in that environment pass through the cell membrane to enter o...
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Answered by Kleio C. • Biology tutor
4333 Views

How do mutations make non-functional enzymes?

Mutations are changes to the base sequence. The base sequence determines the amino acid sequence. A different base sequence therefore codes for a different amino acid sequence. Amino acids interact with each...
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Answered by Chris B. • Biology tutor
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