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Cell Biology
Quick questions on The four major biomolecules: H2 Biology Cell Biology
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are lipids?Show answer
Lipids are not polymers. A triglyceride is one glycerol joined to three fatty acids by ester bonds (formed by condensation). Triglycerides are excellent energy stores because their long hydrocarbon chains are highly reduced, releasing much energy on oxidation.
What is q1?Show answer
Name the bond formed when two amino acids undergo a condensation reaction, and state what else is produced. [2 marks]
What is q2?Show answer
Explain why cellulose is described as a structural polysaccharide. [2 marks]
What is q3?Show answer
Distinguish between a triglyceride and a phospholipid in terms of structure. [2 marks]
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