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Describe the processes and forces that allow water movement up a plant stem.

Water moves into the plant stem from the soil, and up to the leaves via the xylem. Water is taken up by the hairs on the root of the plant down the water potential gradient via osmosis, following the active ...
HC
Answered by Hannah C. • Biology tutor
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Explain the practice and importance of judicial review

Must define the term in the question. The Supreme Court has the power to declare actions of the executive, Acts of Congress, acts or actions of state governments and treaties, unconstitutional. However, judi...
SL
4780 Views

What is a recitative?

Recitative is found in oratorios and operas from the Baroque period onwards. Typically, it involves a predominantly syllabic setting of a text to a homophonic accompaniment; it is used for dialogue, narratio...
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Answered by Michaela H. • Music tutor
10931 Views

How do I structure a 24 mark history essay?

The joy of history essays is that their structures can actually be very formulaic, which means that once you've learnt and practiced the technique, you can show off your knowledge to full advantage. Firstly,...
JB
Answered by Jessica B. • History tutor
9082 Views

Describe the process of insulin secretion. (7 marks)

Beta cells have vesicles containing insulin inside them (1). (2) High glucose levels cause glucose uptake via glucose channels into the beta cell and glucose is metabolised into ATP (3) inside the cell, whic...
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Answered by Gabriella G. • Biology tutor
3182 Views