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How do bacteria have a role in the nitrogen cycle?

This answer is best supported with a whiteboard All living things need nitrogen, but nitrogen gas is too unreactive for plants and animals to use directly. Bacteria's main role in the nitrogen cycle is to be...
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Answered by Katie D. • Biology tutor
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Explain and describe how vaccinations prevent illness.

Vaccinations involve introducing a small amount of dead or inactive form of a pathogen into the body. This stimulates white blood cells to produce complementary antibodies to destroy the pathogen. This is ca...
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Answered by Francesca S. • Biology tutor
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What is the function of a capillary and how is it adapted to carry out this function?

Capillaries deliver blood to individual cells in the body, supplying them with oxygen and nutrients and removing waste products such as carbon dioxide . Capillaries are able to do this because their walls ar...
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Answered by Alice S. • Biology tutor
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Explain how desert plants have adapted to help them survive in extreme environments

Think about the extreme conditions found in desertsHot temperaturesLack of water for long periods of timeVulnerable to animals Think about the characteristics of these plants:Small leavesSpikesLarge stem Lar...
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Answered by Chloe B. • Biology tutor
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Describe how living plants are involved in the carbon cycle.

Think about what carbon is used for, and also what plants are required for. Plants take in carbon dioxide from their surroundings, which enables them to undergo photosynthesis. At night, plants respire, rele...
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Answered by Ellie W. • Biology tutor
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