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Why does the Calvin cycle require six turns to create a single hexose sugar?

Three turns of the cycle produces six molecules of triose phosphate (TP). Five of these six molecules are used to regenerate ribulose bisphosphate (RuBP). So for three turns of the Calvin cycle, only one mol...
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Answered by Rakhitha K. • Biology tutor
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What is the difference between the central nervous system and the peripheral nervous system

The central nervous system consists of the brain and spinal chord, whereas the peripheral nervous system consists of the spinal chord alone.
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Answered by Patrick M. • Biology tutor
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Describe the process of glycolysis in respiration.

Glycolysis is the first stage of respiration. It involves converting one molecule of glucose into two molecules of pyruvate, with the help of ATP. There are two stages of glycolysis. The first stage is energ...
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How do humans have heart attacks?

For AQA GCSE you need to have an understanding of coronary heart disease, the factors that lead to it and the available treatments. The coronary artery is the vessel that supplies the heart with glucose and ...
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Answered by Paige P. • Biology tutor
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What changes occur in the body when you are too hot? (5 marks)

1. Hypothalamus is thermoregulatory centre in brain. This detects increase in temperature (above 37 degrees Celsius) and is activated.2. Hypothalamus causes vasodilation of skin capillaries, which causes hea...
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