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Describe the events that occur in a nerve cell during an action potential.

Action potentials are the way in which information is conveyed along the length of a nerve cell and between nerve cells. At rest, the nerve cells membrane potential is around -70mV. During an action potentia...
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Name three cell structures that are present in a plant cell but absent from an animal cell.

Plant cells have a cell wall for additional strength and protection. Plant cells also have a large vacuole filled with cell sap to increase the cellular turgor. Finally, plant cells have chloroplasts filled ...
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Answered by Gabriella L. • Biology tutor
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What gases will be taken in and given out by a green plant (a) in darkness, (b) in bright sunlight?

(a) In low light intensities a green plant will be taking in oxygen and giving out carbon dioxide. (b) In bright sunlight a green plant will be taking in carbon dioxide and giving out oxygen.
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Answered by Sonali P. • Biology tutor
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What are enzymes? What is the importance of enzymes for living beings?

Enzymes are proteins that are catalysts of chemical reactions. Chemistry shows us that catalysts are non-consumable substances that reduce the activation energy necessary for a chemical reaction to occur. En...
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Answered by Sonali P. • Biology tutor
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Why do enzymes stop working at high temperatures?

With this question, you have to remember that enzymes are proteins. When the temperature gets too hot, the enzyme denatures . Denaturing is where the bonds that hold the enzyme together break, causing the ac...
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Answered by Callum R. • Biology tutor
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