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What is osmosis

Osmosis is the net movement of water down the water potential gradient, through a semi permeable membrane.

Answered by Anna J. • Biology tutor

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Solve these simultaneous equations 5x + y = 21, x- 3y = 9

rearrange the first equation so it reads y= 5x+y= 21 y=21-5xSubstitute this y value into the second equation x-3y=9 y=21-5x x-3(21-5x)=9Expand out the bracket and rearrange to find out w...

Answered by Harriet W. • Maths tutor

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How are red blood cells adapted for transport of oxygen?

Red blood cells are highly adapted to be efficient at absorbing and storing oxygen to carry around the body to be used for aerobic respiration. There are th...

Answered by Amy C. • Biology tutor

2858 Views

Whats the Product rule for differentiation and how does it work?

We use the product rule when we want to find the derivative of a product of two functions using their individual derivatives, the product rule can be written out as the following formula: fg'(x) = f(x)

Answered by Joe M. • Maths tutor

3091 Views

Describe the difference between ionic, covalent, and metallic bonding.

Ionic bonding describes the electrostatic forces of attraction between a metal and a non-metal ion, which are oppositely charged. For example, with NaCl, Na loses an electron to become Na⁺and ...

Answered by James D. • Chemistry tutor

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