AQA AS BIOLOGY 7401/2 Paper 2 Question Paper + Mark scheme [MERGED] June 2022

AQA

AS

BIOLOGY

7401/2

Paper 2

Question Paper + Mark scheme [MERGED]

June 2022

*JUN227401201*

IB/M/Jun22/E9 7401/2

For Examiner’s Use

Question Mark

1

2

3

4

5

6

7

8

9

TOTAL

 Time allowed: 1 hour 30 minutes

Materials

For this paper you must have:

• a ruler with millimetre measurements

• a scientific calculator.

Instructions

• Use black ink or black ball-point pen.

• Fill in the boxes at the top of this page.

• Answer all questions.

• You must answer the questions in the spaces provided. Do not write

outside the box around each page or on blank pages.

• If you need extra space for your answer(s), use the lined pages at the end of

this book. Write the question number against your answer(s).

• Show all your working.

• Do all rough work in this book. Cross through any work you do not want

to be marked.

Information

• The marks for the questions are shown in brackets.

• The maximum mark for this paper is 75.

Please write clearly in block capitals.

Centre number Candidate number

Surname

Forename(s)

Candidate signature

I declare this is my own work.

AS

BIOLOGY

Paper 2

2

*02*

IB/M/Jun22/7401/2

Do not write

outside the

Answer all questions in the spaces provided. box

0 1 . 1 What is a gene?

[1 mark]

0 1 . 2 Describe how the production of messenger RNA (mRNA) in a eukaryote cell is

different from the production of mRNA in a prokaryote cell.

[2 marks]

0 1 . 3 Scientists produced a short, single-stranded, artificial nucleic acid, called PNA. The

PNA binds to a small section of DNA.

The scientists introduced PNA into cells and discovered that these cells produced

less mRNA than cells that did not contain PNA.

Suggest how PNA affected the transcription of the section of DNA.

[2 marks]

3

*03*

Turn over ►

IB/M/Jun22/7401/2

Do not write

outside the

0 1 box . 4 Describe the role of ATP in the process of translation in protein synthesis.

[2 marks]

Turn over for the next question

7

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