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Describe the process of breathing out.

Firstly, the intercostal muscles contract. This causes the ribcage to move upwards and outwards. The diaphragm also contracts. This all has the combined effect of increasing the volume of the lungs. As a res...
JZ
Answered by Julia Z. • Biology tutor
5493 Views

Explain how blood sugar level is controlled in the body?

The control of different substances in the body keeping them at a stable equilibrium level is called homeostasis. One area of this is blood sugar level control, if blood sugar level is too high or too low th...
AS
Answered by Angus S. • Biology tutor
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What is the best technique for drawing diagrams in an exam?

First, list all the information you need to include as a reminder in some spare space. For example, if you had to draw a plant cell writing "cell membrane, cytoplasm, nucleus, mitochondria, ribosomes, v...
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Answered by Bethany M. • Biology tutor
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What are two different ways cells of the body signal each other? Give an example of each.

Electrical signal, e.g. when you touch something hot, an electrical signal goes from your hand to your brain to tell you to pull your hand away. How do you know it's electrical? Because it's so fast! Chemica...
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Answered by Isobel H. • Biology tutor
3951 Views

Describe the function of red blood cells and how they are suited to their function.

The primary function of red blood cells (RBCs) is to transport oxygen around the body. They contain haemoglobin, which oxygen attaches to in order to form oxyhaemoglobin. RBCs are very small in size and are ...
HS
Answered by Hafsa S. • Biology tutor
11855 Views