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State whether arteries carry blood towards or away from the heart and then give two features of arteries relating to this role

Arteries carry blood away from the heart. Thy have thicker walls.They have more/thicker muscle tissue.They have a narrower bore/lumen.
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Answered by Alexander N. • Biology tutor
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Describe the main differences between mitosis and meiosis

Number of cell divisions: there is 1 cell division in mitosis and 2 in meiosis. Daughter cells: mitosis produces 2 daughter cells genetically identical to each other and the parent cell, whereas meiosis prod...
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Answered by Jennifer A. • Biology tutor
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What does the hormone insulin do?

It is produced by the pancreas, it acts on cells in the liver to stimulate the uptake of glucose from the blood, and its conversion to glycogen.
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Answered by Sufyaan I. • Biology tutor
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Describe how an action potential is generated.

The generation of an action potential occurs in 4 main steps (resting potential, depolarisation, repolarisation and hyperpolarisation). At resting potential, the membrane potential is about -70mV. A stimulus...
Answered by • Biology tutor
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Explain the process of osmosis and give an example of where this occurs (5 marks).

Osmosis is the diffusion of water molecules (1 mark) from a region of high particle concentration (1 mark) to a region of low particle concentration (1 mark), through a partially permeable membrane (1 mark)....
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Answered by Emily W. • Biology tutor
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