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What role does auxin play in the processes of phototropism?

Auxin is a plant hormone that is often made in the growing tips of roots and stems, the hormone can then diffuse to other parts of the plant. It controls the growth of plants by promoting cell division and c...
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Answered by Harry A. • Biology tutor
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Describe how components of tobacco smoke can affect the cardiovascular system.

Tobacco smoke contains nicotine. Nicotone makes platelets 'sticky' and more likely to form 'blood clots' which can block arteries in the heart, causing a myocardial infarction (heart attack) as well as block...
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Answered by Savan S. • Biology tutor
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GCSE - By which two processes does glucose enter cells in the human body?

The two processes are diffusion and active transport. Diffusion is the process where a substance moves from a high concentration to a low concentration. This can be referred to as going down a concentration ...
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How is tissue fluid and lymph formed?

At the arteriole end:The blood in the capillary has a high hydrostatic pressure due to the inherently high pressure in the blood vessels (due to ventricular contraction). Hydrostatic pressure would tend to p...
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Answered by Noah H. • Biology tutor
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Describe the process of the photosynthesis' light dependent reaction.

Photosynthesis is the process during which plants convert Sunlight, Carbondioxide and Water in Glucose and Oxygen. Photosynthesis happens at the plants thylakoid-membrane which are located inside the chlorop...
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Answered by Christina M. • Biology tutor
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