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Of what smaller molecules are carbohydrates made of and what is their main function in the body?

Carbohydrates are made of glucose and their mainly used for respiration to produce energy.
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Answered by Eleni P. • Biology tutor
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What part of the eye carries information to the brain?

The optic nerve.
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Answered by Eleni P. • Biology tutor
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Describe the process by which lipids are 'broken down' by the digestive system, and how bile facilitates this process.

Lipids are broken down by lipases into glycerol and fatty acids. Bile, made in the liver and stored in the gall bladder, facilitates this process by emulsifying fats into smaller droplets. This increases the...
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Answered by Poppy K. • Biology tutor
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How is the structure of the lung adapted for respiratory function?

The lung can be divided into different sections regarding its function. The tube that connects the airway to the lungs is called the trachea, which is made of cartilage rings. These are flexible, and allow s...
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Answered by Rebecca I. • Biology tutor
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Explain the processes involved in eutrophication

Eutrophication is where a surplus of nutrients in a lake or pond leads to an overgrowth of plant life, causing a shift in the biodiversity. There are 5 steps to this process: Step 1: The use of fertilisers o...
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Answered by Rebecca W. • Biology tutor
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