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How does the xylem structure of the plant help transpiration?

Firstly I would discuss with the student what transpiration is and what xylem vessels are. Transpiration is the inevitable consequence of gas exchange in the leaf causing water to be transported through the ...
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Answered by Robine V. • Biology tutor
4830 Views

How do you structure an essay in French?

Writing an essay in French can be a daunting task but it can be treated in the same way as writing an essay in English or any language. You must have an introduction, main body through which you explore and ...
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Answered by Krishmeela R. • French tutor
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Explain the sequence of events that occur in the control of the cardiac cycle.

The sino-atrial node depolarises which causes a wave of excitation to pass through the atria (right prior to left) before reaching the atrio-ventricular node. The wave of excitation causes systole of the atr...
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Answered by Hannah G. • Biology tutor
8715 Views

Calculate the percentage of Copper in Copper oxide (CuO, Mr=80). (3 marks)

Ar of Cu = 64 (1 mark) Percentage of copper in CuO = 64/80 x100 (1 Mark) Percentage of copper in CuO = 80% (1 mark)
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Answered by Katie D. • Chemistry tutor
24640 Views

What is the difference between haploid and diploid cells? (2 Marks)

Diploid cells contain 2 sets of chromosomes (23 pairs of chromosomes) e.g. body cells . Haploid cells contain half the amount of chromosomes as diploid cells (only 1 set of chromosomes ) e.g. gametes.
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Answered by Katie D. • Biology tutor
24488 Views