AQA A LEVEL BIOLOGY PAPER 2 2019 QP

AQA A LEVEL BIOLOGY PAPER 2 2019 AS BIOLOGY Paper 2 2 *02* IB/M/Jun19/7401/2 Do not write outside the There are no questions on this page box DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED 3 *03* Turn over ► IB/M/Jun19/7401/2 Do not write outside the Answer all questions in the spaces provided. box 0 1 . 1 Describe the role of enzymes in the digestion of proteins in a mammal. [4 marks] [Extra space] Question 1 continues on the next page 4 *04* IB/M/Jun19/7401/2 Do not write outside the Scientists investigated how the diet of rabbits affected their digestion and absorption box of protein. The scientists fed rabbits an identical mass of food but varied the percentage of protein in the food. The scientists measured the mean mass of protein fed to the rabbits that was absorbed, which they then expressed as a percentage value. The scientists’ results are shown in Figure 1. The error bars show ± 2 standard deviations. ± 2 standard devi