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Define osmosis

Osmosis is the movement of water across a semi-permeable membrane
CI
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Give 3 ways in which aerobic respiration differs from anaerobic respiration in muscles.

Aerobic respiration uses oxygen/O2 while anaerobic respiration doesn't use oxygen.Aerobic respiration produces carbon dioxide/CO2 as a waste product while anaerobic respiration doesn't (it produces lactic ac...
SG
Answered by Sarah G. • Biology tutor
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Define what degenerate genetic coding means and why it is advantageous

Degenerate genetic coding means that although there are 64 different codons, there are only 21 amino acids, meaning that there are multiple codons which code for one single amino acid. The advantage for this...
AS
Answered by Avinash S. • Biology tutor
56076 Views

Why does bread start to taste sweet after being chewed in the mouth for a long period of time?

[Hints given to student: (1) Bread contains starch, and (2) saliva mixes with your food when you are chewing]. ANSWER : Bread contains the carbohydrate called 'starch', a molecule consisting of a chain of gl...
RA
Answered by Raghav A. • Biology tutor
52706 Views

Describe how haemoglobin binds to oxygen:

The binding curve of haemoglobin to its substrate is sigmoidal ('s' -shaped). Haemoglobin has four subunits, each of which will bind one molecule of oxygen. The reason for the sigmoidal shape is the process ...
EB
Answered by Emma B. • Biology tutor
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