OCR GCE A LEVEL BIOLOGY A PAPER 1 QUESTION PAPER 2023 (H420/01: BIOLOGICAL PROCESSES)
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OCR GCE A LEVEL BIOLOGY A PAPER 1 QUESTION PAPER 2023 (H420/01: BIOLOGICAL PROCESSES). DOWNLOAD OFFICIAL AND VERIFIED OCR GCE A LEVEL BIOLOGY A PAPER 1 QUESTION PAPER 2023 ON www.leakedexams.com.


You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 Which description of biological molecules is correct?
 A DNA and RNA are both polymers of nucleotides.
 B Hydrolysis of sucrose produces fructose and β-glucose.
 C Proteins are polymers of amino acids and are broken down in condensation reactions.
 D Starch is a polymer of the monosaccharide maltose.
Your answer [1]
2 Which statement about lipids is correct?
 A Phospholipids are formed by esterification of glycerol with three molecules of fatty acid.
 B Phospholipids containing unsaturated fatty acids can increase the fluidity of cell membranes.
 C Triglycerides are good energy stores although they release less energy than an equal mass
of polysaccharide.
 D Triglycerides form the bilayer of the plasma membrane.
Your answer [1]