The newest 9 of 9 written questions. Open one to see it on the real paper.
Fish is a good source of protein in the diet. List all the chemical elements that make up proteins.
See it on the paper →Glycogen is a type of carbohydrate. Circle all the chemical elements that make up carbohydrates. carbon hydrogen magnesium nitrogen oxygen sulfur
See it on the paper →Chemical digestion involves enzymes. List all the chemical elements that make up an enzyme molecule.
See it on the paper →Which biological molecule contains the elements carbon, hydrogen, nitrogen and oxygen?
See it on the paper →Carbohydrate, protein and fat are made from chemical elements. Place ticks (3) in the boxes in Table 4.1 to show all the correct elements each substance is made from. Table 4.1 element substance carbon hydrogen oxygen nitrogen carbohydrate protein fat
See it on the paper →Which row matches the nutrient to the chemical elements that it contains?
See it on the paper →Which chemical element is found in proteins, but not in carbohydrates or fats?
See it on the paper →Which chemical element is found in proteins, but not in carbohydrates or fats?
See it on the paper →List the chemical elements that make up proteins.
See it on the paper →Comprehensive responses • Many candidates correctly circled the three chemical elements that make up carbohydrates. Limited responses • The only incorrect chemical elements given were magnesium and nitrogen.
— Examiner report, February/March 2026, 0654/32 Q1(a)(iii) (Cambridge)
Comprehensive responses • Many candidates recognised that enzymes are proteins and gave the four elements that make up proteins. Limited responses • Many candidates did not give elements and gave molecules instead, including amino acids and proteins.
— Examiner report, February/March 2026, 0654/42 Q3(a) (Cambridge)
Few candidates gained more than one mark on this question. The elements present in proteins and fats were not well known.
— Examiner report, May/June 2022, 0654/33 Q4(d) (Cambridge)
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