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What is the function of coronary arteries?

The function of coronary arteries is to carry oxygenated blood to the myocardium (heart muscle).
Answered by • Biology tutor
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The percentage of oxygen absorbed from the air in the lungs is usually approximately the same, so how can the oxygen supply to the blood be increased during vigorous activity?

The oxygen supply to the lungs can be increased during vigorous activity by inhaling more deeply and more rapidly. This will cause a larger volume of air to be taken in per breath, which exposes the capillar...
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Answered by Sophia W. • Biology tutor
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How are red blood cells adapted to their function?

Contain Haemoglobin, the molecule for carrying oxygen through the blood. Bi-concave shape, to give a large surface area for diffusion of oxygen. No nucleus to make more space for haemoglobin for oxygen trans...
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Answered by Kamiela S. • Biology tutor
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What are the key components of DNA replication and what are their functions?

Original DNA template; DNA replication requires an existing double stranded DNA to copy. Free DNA nucleotides; free bases (ATCG) that can be added to the new DNA strand. DNA polymerase; the enzyme required t...
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Answered by Sophie M. • Biology tutor
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What is osmosis?

Osmosis is the movement of water molecules through a partially permeable membrane. Water molecules move from a region of of higher concentration to an area of lower concentration. When concentration is equal...
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Answered by Megan T. • Biology tutor
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