AQA A-Level Biology Paper 1 Predicted Paper 2023 QUESTIONS AN ANSWERS

Document Content and Description Below

A-Level Biology Paper 1 Predicted Paper 2023 01 To look for the presence of starch in potatoes, a student decided to observe potato cells under a microscope. The image below shows starch grains p... resent in potato cells viewed at a magnification of x400. a) Describe how the student could have prepared the sample to view under the microscope. [2 marks] b) Describe how the student identified that these grains contained starch. d) Plants store excess glucose as starch in their cells. Glucose can also be used to make cellulose to make cell walls. Explain how the structure of cellulose make it adapted for its function. [3 marks] a) Explain how water assists in metabolic reactions inside cells. [2 marks] c) Calculate the actual length in µm of the starch grain between points A and B. [Show More]

Last updated: 11 months ago

Preview 1 out of 20 pages