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What are the functions of the substances in the blood?

The blood is an amazing way to deliver all kinds of important and interesting materials around our body to the organs and tissues that need it the most and is efficient in removing harmful substances from th...
Answered by • Biology tutor
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What are the functions of the substances in the blood?

The blood is an amazing way to deliver all kinds of important and interesting materials around our body to the organs and tissues that need it the most and is efficient in removing harmful substances from th...
Answered by • Biology tutor
3219 Views

Draw a diagram showing a normal iris and what happens to the iris when a light in shined into the human eye. (1 mark). What causes this to happen? (2 marks)

(Any diagram showing an iris that has constricted) 1 mark In high light levels (1 mark) Accept reflex action due to increased photoreceptor action or words to that effect circular muscles relax and radial mu...
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Answered by James P. • Biology tutor
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How is blood glucose levels controlled by the body (homeostasis) ?

Controlling high blood glucose Blood glucose levels are important to control because glucose is our key source of energy in respiration. When blood glucose levels are too high, this is detected by the pancre...
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Answered by Nazeya B. • Biology tutor
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How is a nerve impulse transmitted across a synapse?

Synapses are a gap or a junction between two neurones. When a nerve impulse is travelling along the axon of the first neurone and the impulse reaches the axon terminal (the end of the axon), a chemical calle...
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Answered by Smita K. • Biology tutor
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