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What is diffusion, and what factors affect it?

Diffusion is the passive movement of particles from an area of high concentration to an area of low concentration. Factors which affect it include

Answered by Umair A. • Biology tutor

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What is the importance of ADH while experiencing dehydration?

ADH, short for antiduretic hormone, is produced when the concentration of solutes in blood plasma increases - this is detected by receptors in the brain. ADH is then released into the bloodstream, where i...

Answered by Paulina W. • Biology tutor

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Describe the changes that take place in the iris when moving into a dark room.

The iris controls the diameter of the pupil to accommodate for the level of light that needs to enter the eye. When an individual moves into a dark room, the pupil must dilate to allow more light to enter...

Answered by Pauline T. • Biology tutor

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What is the most essential tip for scoring highly in an English Literature exam?

The most important thing for scoring highly in and English Lit essay is to constantly be contrasting and comparing your observations to other texts. This shows the examiner that not only do you know the c...

Answered by Zak W. • English Literature tutor

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What is the difference between the terms elastic and inelastic and how do they relate to demand?

Price Elasticity of demand relates to how responsive consumers are in response to a change in the price of any given good or service. You can calculate price elasticity through the formula: Price elastici...

Answered by Zak W. • Economics tutor

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