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Define the term osmosis

Osmosis is the movement of water particles from an area of high concentration to an area of low concentration through a partially permeable membrane along a concentration gradient.

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Answered by Alice D. Biology tutor
2414 Views

State the function of the enzyme lactase

Break down the disaccharide lactose to the monosaccharides glucose and galactose.

Answered by Biology tutor
1649 Views

A ball with radius 10cm is filled with an ideal gas at pressure 2*(10)^5Pa and temperature 300K. The volume of the gas is changed at constant pressure so that the radius of the ball is reduced with 1cm. Find the amount of gas and the new temperature

In a question like this, you will be given that the molar gas constant is R = 8.31JK-1mol-1. However, committing this to memory will be helpful. We should use the ideal gas law: PV =...

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Answered by Ivan G. Physics tutor
1519 Views

How do I analyse a poem?

Firstly, select a quotation that either has imagery (e.g. a description of flowers), interesting punctuation (e.g. a pause in the middle of a line), symbolism

Answered by English Literature tutor
3206 Views

What's the difference between movements along and shifts in the demand curve?

(the answer to this question would be assissted by the use of diagrams) Movements along the demand curve are caused by changes in price. A change in price will move to a new point on the demand curve. For...

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Answered by Sarah L. Economics tutor
2443 Views

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