Sciences Co-ordinated 9-1 0973: B5 - Enzymes Topical Past Paper Questions
Cambridge IGCSE Sciences Co-ordinated 9-1 (0973) past-paper questions on B5 - Enzymes, free. This topic is frequently examined across 13 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
A student investigates the effect of enzyme volume on an enzyme-controlled reaction. Plant cells such as celery cells contain the enzyme catalase. Catalase speeds up the breakdown of aqueous hydrogen peroxide into water and oxygen gas. The oxygen gas released forms a foam when mi…
(a) (i) State all the elements found in the molecules of: protein ..... glycogen..... [2] (ii) State the names of the two different smaller molecules that make up a molecule of fat. and ..... [2] (iii) State the test for protein and give the observation for a positive result. tes…
A student investigates an enzyme-controlled reaction. Catalase is an enzyme found inside living cells such as yeast cells. It catalyses the breakdown of hydrogen peroxide, releasing oxygen gas. When a suspension of yeast cells is mixed with hydrogen peroxide solution the oxygen r…
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