A Level Biology A H420/01 Question Paper 2021

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Monday 11 October 2021 – Morning A Level Biology A H420/01 Biological processes Time allowed: 2 hours 15 minute INSTRUCTIONS • Use black ink. You can use an HB pencil, but only for graphs an... d diagrams. • Write your answer to each question in the space provided. If you need extra space use the lined pages at the end of this booklet. The question numbers must be clearly shown. • Answer all the questions. • Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong. INFORMATION • The total mark for this paper is 100. • The marks for each question are shown in brackets [ ]. • Quality of extended response will be assessed in questions marked with an asterisk (*). • This document has 36 pages. ADVICE • Read each question carefully before you start your answer SECTION A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. Answer all the questions. 1 Which of the options is not a function of the liver? A production of urea in the ornithine cycle B removal of amino groups from amino acids C storage of excess amino acids as protein D storage of glucose as glycogen Your answer [1] 2 Which of the statements about the control of blood glucose is correct? A Pancreas cells increase their release of glucagon when blood glucose concentration rises above a set level [Show More]

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