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Frequent treatment with antibiotics can result in resistant strains of bacteria, explain how.

A mutation can occur, causing the formation of an antibiotic resistant gene within a bacteria. This bacteria will then survive the course of antibiotics and reproduce, passing on the gene by vertical gene tr...
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Answered by Hannah A. • Biology tutor
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Explain how smooth muscle in the arterioles can reduce blood flow.

The smooth muscle contracts, causing vasoconstriction. Vasoconstriction is the narrowing of the vessel lumen.
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Answered by Hannah A. • Biology tutor
10991 Views

Give 3 differences between aerobic and anaerobic respiration.

Oxygen is used in aerobic respiration. More energy is generated in aerobic respiration. Carbon dioxide and water are products of aerobic respiration, whereas lactic acid is the end product of anaerobic respi...
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Answered by Hannah A. • Biology tutor
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What is the process by which plants and algae remove carbon from the atmosphere?

Photosynthesis. This question may throw some students off because: 1: They may be used to the question phased as something like 'By what process do plants generate glucose' 2: They may not be aware that alga...
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Answered by Leo W. • Biology tutor
4511 Views

Explain how a population of antibiotic-resistant bacteria might develop from non-resistant bacteria.

There is genetic variation within the population of bacteria The variation has occurred due to random genetic mutations This variation means that a bacterium may have a mutation that gives it resistance to a...
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Answered by Maia P. • Biology tutor
10889 Views