Explain6 marksChallenge
Explain why maltose is a reducing sugar while sucrose is not. In your answer, refer to the monosaccharides involved, the type of reaction that forms disaccharides, and the structure of the glycosidic bonds.
CAIE A Level Biology 9700 · Biological molecules
Biological molecules: explain question
How this question is marked
6 marks, so the mark scheme is looking for about 6 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
More Biological molecules questions
- 6 marks · Water is essential for life due to its unique properties arising from hydrogen bonding between water molecules. A marine biologist…
- 6 marks · Water has several properties that are important for life. The table below lists three biological roles of water. Biological role Property…
- 7 marks · A student is investigating the sugar content of a honey sample. Honey contains reducing sugars (glucose and fructose) and a small amount…
- 5 marks · Haemoglobin is a globular protein with quaternary structure. When a solution of haemoglobin is heated above 60°C, it loses its ability to…
- 5 marks · Haemoglobin transports oxygen in the blood, while collagen provides structural support in connective tissues. Compare the structures of…
- 6 marks · A student investigates the effect of placing plant cells in a concentrated salt solution. The cells lose water and their cytoplasm…
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.