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A-LevelBiologyBiological molecules9700/12 · Oct/Nov 2019 · Q91 Mark

Which rows show the chemical groups present in the biological molecules listed?

Abiological molecule: amino acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no biological molecule: β-glucose, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: yes biological molecule: glycerol, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: no
Bbiological molecule: amino acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no biological molecule: β-glucose, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: yes biological molecule: fatty acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no
Cbiological molecule: amino acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no biological molecule: glycerol, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: no biological molecule: fatty acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no
Dbiological molecule: β-glucose, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: yes biological molecule: glycerol, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: no biological molecule: fatty acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no

✓ Correct answer

B: biological molecule: amino acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no biological molecule: β-glucose, presence of carboxyl (COOH) groups: no, presence of two or more hydroxyl (OH) groups: yes biological molecule: fatty acid, presence of carboxyl (COOH) groups: yes, presence of two or more hydroxyl (OH) groups: no

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About this question

Topic
Biological molecules, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, Oct/Nov 2019 Paper 1 Variant 2, question 9.

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