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what are the risk factors for coronary heart disease and what is it?

Coronary heart disease involves the arteries supplying the heart, known as the coronary arteries. There are two arteries namely the left and right coronary arteries. Healthy coronary arteries are nice and wi...
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What is the difference between animal and plant cells?

Most animal cells have:A nucleus (DNA is stored)Ribosomes (proteins are made)Mitochondria (ATP is produced for energy)Cytoplasm (most chemical reactions take place here)Cell membrane (lets certain things in ...
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Answered by Aiman K. • Biology tutor
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What is a heart attack?

A heart attack occurs when the flow of blood through a coronary artery is blocked, preventing an area of heart muscle from being supplied with oxygen and nutrients. As a result, the heart's ability to pump b...
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Answered by Maya L. • Biology tutor
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Why does glucose pass into the kidney but red blood cells and protein do not?

Each kidney contains 1000s of nephrons and this is where a process called ultrafiltration occurs. Blood from the renal artery flows through the glomerulus at high pressure. The glomerulus is a bundle of capi...
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Answered by Lottie T. • Biology tutor
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What is the difference between mitosis and meiosis?

Both mitosis and meiosis are methods of cell division. Mitosis is cell division where the DNA of the parent molecule is duplicated then split into 2 identical daughter cells. Mitosis is split into 4 stages; ...
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Answered by Pavan C. • Biology tutor
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