A Level Biology A H420/02 Question Paper 2021

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Friday 15 October 2021 – Morning A Level Biology A H420/02 Biological diversity Time allowed: 2 hours 15 minutes INSTRUCTIONS • Use black ink. You can use an HB pencil, but only for graphs a... nd 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 28 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 a function of fibrous proteins? A aids rigidity of membranes B involved in cell signalling C provides elasticity in alveoli D speeds up reactions Your answer [1] 2 Which of the types of molecule is shown in the diagram? C H CH2 C OH N H [Show More]

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