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What is the difference between breathing and respiration?

It is understandable why there is confusion between the two terms as we use the term 'respiratory system' to refer to the lungs and associated structures, even though they are not directly involved in the pr...
AH
Answered by Ariadne H. • Biology tutor
4262 Views

A ladder 6.2m long is leaning against a wall. The bottom of the ladder is 0.8m from the wall. Calculate the distance the ladder reaches up the wall, giving your answer to two decimal points.

Using the information given, we can draw a diagram of the ladder leaning against the wall. As the wall is at 90 degrees to the ground, we can see that the ladder, wall and ground form a right-angled triangle...
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Answered by Pippa F. • Maths tutor
12139 Views

How does temperature affect enzyme activity?

A low temperatures enzyme activity will be slow but as the temperature rises the enzyme will gain more kinetic energy and hence move around more enabling greater interaction with the substrate. This will res...
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Answered by Amelia W. • Biology tutor
15610 Views

Find the two solutions to the quadratic equation x^2-9x+18

The constant 18 can be written in the form 3*6. Therefore the brackets will take the form (x 3)(x 6). In order to find the sign in between them, we have to write -9 using 3 and 6. -9=-3-6 so the brackets are...
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Answered by Felix A. • Maths tutor
6029 Views

What is stepwise refinement in top down programming?

This is the process of breaking down a problem into sections which become progressively smaller until each module can be written as a singular function. Each module can be tested separately or form part of a...
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Answered by Zoe N. • Computing tutor
7161 Views