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Example the process of Speciation

All population that reproduce sexually contain some degree of genetic variation, likewise, all environments will have different selection pressures. As a population reproduces, the individuals best suited to...
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Answered by Zaidi H. • Biology tutor
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Explain how the human circulatory system is adapted to supply oxygen to the tissues and remove waste products from tissues.

This is an example of knowledge recall question with need for further explanation. It is therefore important to be able to explain yourself concisely and in the manner that the examiners expect to gain the m...
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Answered by Theodore H. • Biology tutor
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Describe the process of translation

Transcription is the first stage of protein synthesis. It involved the formation of primary mRNA. Transcription begins with a section of DNA within the nucleus unwinding using enzyme DNA helicase. This separ...
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Answered by Jaydeep B. • Biology tutor
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What is ocean acidification?

Ocean acidification is caused by the chemical reaction of CO2 dissolving into seawater, where it immediately dissociates into carbonic acid and then into bicarbonate and hydrogen ions which decreases the pH ...
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Answered by Lulu S. • Biology tutor
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Describe and explain how the lungs are adapted to allow rapid exchange of oxygen between the air in the alveoli and blood in the capillaries around them. (5 marks)

The lungs have million of alveoli which increases the surface area , therefore increasing the rate of diffusion of oxygen into the lungs. The alveoli are very thin walled , which reduces the diffusion pathwa...
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Answered by Aysha Z. • Biology tutor
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