Sciences Co-ordinated 9-1 0973: B4 - Biological molecules Topical Past Paper Questions
Cambridge IGCSE Sciences Co-ordinated 9-1 (0973) past-paper questions on B4 - Biological molecules, 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 student tests potato and milk for their nutrient content. (a) Procedure The student: - puts some potato into two test-tubes - adds biuret solution to one of the test-tubes - adds iodine solution to the other test-tube - observes the final colour in each test-tube. The student r…
A student tests solution T for the presence of two different nutrients. The student does the tests shown in Table 2.1 on solution T. Solution T tests negative with the biuret solution and positive with the iodine solution. (a) State the initial colour of the testing solution and…
Sign in required
Full B4 - Biological molecules question set, mark schemes and AI worksheets
Log in for the full topic-segregated question set, mark schemes, and AI worksheets built from every Sciences Co-ordinated 9-1 past paper. New accounts start with 25 free credits.
Explore all Sciences Co-ordinated 9-1 topics
All Sciences Co-ordinated 9-1 topics