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What is the difference between excretion and egestion? Name three major organs of excretion in humans, the substances they excrete and the function of this excretion.

Excretion is the removal of toxic materials, waste products of metabolism and excess substances from organisms. Egestion is the passing out of undigested food as faeces, through the anus. Three major organs ...
LW
Answered by Lucy W. • Biology tutor
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Why do plants grow towards sunlight?

Plants have adapted to grow towards sunlight - an essential requirement for growth and survival. But how do they do this? An important factor in the control of plant growth is the hormone 'auxin', found with...
RD
Answered by Rachael D. • Biology tutor
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Which enzymes are involved in digestion?

Several enzymes are involved in digestion. Amylase is produced by the salivary glands and pacreas and starts working as soon as food is ingested, breaking down starch into maltose in the mouth and also the s...
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Answered by Halcyon H. • Biology tutor
5835 Views

Find the x-Coordinate of the minimum point of the function: f(x) = x^2 + 2x - 5

One of the easiest ways to find a minimum/ maximum point is using differentiation. The derivative of the function f(x) is usually written as dy/dx or f'(x) and is essentially a function that tells us the gra...
SM
Answered by Sachin M. • Maths tutor
13740 Views

Describe Attribution Theory. What do coaches most commonly attribute failure to and why?

Attribution Theory is a method of linking success or failure to internal or external and stable or unstable factors. -Internal table factor is ability, a coach would say we won because we are good. This impr...
EA
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