AQA A-Level Biology Paper 1 final question paper and mark scheme Predicted Paper 2023

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AQA A-Level Biology Paper 1 Predicted Paper 2023 Name …………………………………………………………………… Date ………………… 2 hours allowed. You may u... se a scientific calculator and a ruler with millimetre measurements. Grade boundaries These are VERY rough guesses! Getting a B on this paper does not guarantee you the same mark in the exam. • A* 65% • A 55% • B 45% • C 40% • D 35% • E 30% 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 present 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. [2 marks] c) Calculate the actual length in µm of the starch grain between points A and B. [2 marks] Actual length = [Show More]

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