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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...
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Answered by Sarah G. • Biology tutor
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(b) Cigarette smoke contains nicotine. Nicotine is a vasoconstrictor that reduces the diameter of some blood vessels. (i) Using this information, explain why smoking increases the risk of developing cardiovascular disease (CVD). How do I approach this?

Good question. You must think about these questions in progressive steps. The first step is given - vasoconstriction. What does this cause? A reduction in the diameter of the blood vessel. So you've got the ...
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Answered by Michael A. • Biology tutor
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Why is genetic drift important in small populations?

Within a population there is genetic variation between individuals. For example, individuals have different combinations of different alleles, which may or may not be passed onto their offspring. Genetic dri...
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Answered by Bethany P. • 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...
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Answered by Avinash S. • Biology tutor
56066 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...
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Answered by Raghav A. • Biology tutor
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