Biology 9-1 0970: 4_Biological Molecules Topical Past Paper Questions
Cambridge IGCSE Biology 9-1 (0970) past-paper questions on 4_Biological Molecules, free. This topic is frequently examined across 11 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Enzymes are large molecules. Which small molecules are they made from? **A.** amino acids **B.** carbon dioxide and water **C.** fatty acids **D.** sugars
Photosynthesis occurs in chloroplasts. Students investigated the effect of light intensity on the rate of photosynthesis in a chloroplast suspension. The blue dye DCPIP can be used to investigate photosynthesis. During photosynthesis, the dark-blue colour of the DCPIP changes and…
(a) Some plants lose their leaves in the winter and grow new leaves in the spring. A scientist measured the total leaf area of the leaves on one grapevine plant. They repeated this on 100 grapevine plants and found the mean total leaf area per plant. This procedure was done every…
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