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Carbohydrates AQA A Level Biology In depth Complete Presentation
Every you need to know about carbohydrates, including practice questions, practical analysis and all the content regarding the topic.
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CarbohydratesLO:
,Chemistry recap
• What is a mole?
• The SI unit for measuring the amount of a substance and abbreviated to mol.
• One mole contains the same number of particles as there are in 12g of
carbon-12 atoms.
• 12g of carbon-12 contains 6.022 x 1023 carbon atoms.
• This is the Avagadro constant.
• What is a molar solution?
• Contains one mole of solute in each litre of solution.
• A mole is the molecular weight expressed as grams.
• How would you make a molar solution of sodium chloride?
• Find the molecular mass.
• Formula for sodium chloride is NaCl (one Na atom, one Cl atom)
• Atomic weight of Na is 23 and chlorine is 35.5 so the molecular mass is 58.5.
• A 1M solution of NaCl contains 58.5 grams of sodium chloride per litre of
solution.
, Biomolecules
What are the repeat units of each of these
biomolecules?
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