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"Hormones are secreted by endocrine glands." Explain the meaning of this statement.

Firstly, lets define each of the important scientific words here. Hormones are chemical messengers in the body which aid in the chemical coordination of different functions, for example, related to homeostas...
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Answered by Adam H. • Biology tutor
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How does vaccination prevent infection?

White blood cells produce antibodies which are produced rapidly upon re-infection and these antibodies kill pathogens.
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Answered by Ruqia A. • Biology tutor
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What are the difference between mitosis and meiosis

Mitosis is the type of cell division which produces daughter cells which are genetically identical to the parent cells. This type of cell division is needed for growth and repair. In mitosis in human cells t...
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Answered by Sian H. • Biology tutor
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What is the differences and simalarities between diffusion and osmosis?

Diffusion may be simple, whereby solutes travel through the phospholipids in the cell membrane as they have the same polarity as a lipid or are small enough to do so.Or, diffusion is faciliated and this is w...
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Answered by Eloise L. • Biology tutor
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Explain the exchange of oxygen between an alveolus and a capillary.

The blood in the capillary has just returned to the lungs from the rest of the body, so contains a low concentration of oxygen. The alveolus contains air that has just been breathed in by ventilation, so it ...
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Answered by Anastasia D. • Biology tutor
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