A-level bio A
OCR Oxford Cambridge and RSA
Friday 17 June 2022 – Morning
A Level Biology A
H420/02 Biological diversity
Time allowed: 2 hours 15 minutes
You can use:
a ruler (cm/mm)
a scientific or graphical calculator
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and 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 32 pages.
ADVICE
• Read each question carefully before you start your answer.
,© OCR 2022 OCR is an exempt
[601/4260/1] DC Charity Turn over
(CE/CB) 301349/5
, 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 Many processes in the body are controlled by enzymes.
Which of the options is an extracellular process controlled by enzymes?
A Conversion of fibrinogen to fibrin during blood clotting
B Digestion of a pathogen inside a lysosome
C DNA replication
D Movement of vesicles from the Golgi apparatus to the cell membrane
Your answer [1]
2 Many industrial processes use immobilised enzymes.
Which of the options is not an advantage of using immobilised enzymes
rather than free enzymes?
A Enzymes can be reused.
B Enzymes remain active over a wider range of temperatures.
C Set-up costs are low.
D The product is not contaminated by enzymes.
Your answer [1]
, 3 Which of the following changes of lifestyle is/are likely to reduce the spread of a
disease that is transmitted by droplets of moisture?
1 Clean drinking water
2 Fewer people living together in the same house
3 Housing with improved ventilation
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer [1]
4 Ash trees are an important part of the British landscape.
In 2012, a fungal disease known as ash dieback arrived in the UK from mainland
Europe.
Which of the following could explain how ash dieback could have reached the UK
from mainland Europe?
1 Spores carried on the wind
2 Young diseased trees imported from Europe and planted in the UK
3 Contaminated soil from a previously infected crop
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer [1]
OCR Oxford Cambridge and RSA
Friday 17 June 2022 – Morning
A Level Biology A
H420/02 Biological diversity
Time allowed: 2 hours 15 minutes
You can use:
a ruler (cm/mm)
a scientific or graphical calculator
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and 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 32 pages.
ADVICE
• Read each question carefully before you start your answer.
,© OCR 2022 OCR is an exempt
[601/4260/1] DC Charity Turn over
(CE/CB) 301349/5
, 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 Many processes in the body are controlled by enzymes.
Which of the options is an extracellular process controlled by enzymes?
A Conversion of fibrinogen to fibrin during blood clotting
B Digestion of a pathogen inside a lysosome
C DNA replication
D Movement of vesicles from the Golgi apparatus to the cell membrane
Your answer [1]
2 Many industrial processes use immobilised enzymes.
Which of the options is not an advantage of using immobilised enzymes
rather than free enzymes?
A Enzymes can be reused.
B Enzymes remain active over a wider range of temperatures.
C Set-up costs are low.
D The product is not contaminated by enzymes.
Your answer [1]
, 3 Which of the following changes of lifestyle is/are likely to reduce the spread of a
disease that is transmitted by droplets of moisture?
1 Clean drinking water
2 Fewer people living together in the same house
3 Housing with improved ventilation
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer [1]
4 Ash trees are an important part of the British landscape.
In 2012, a fungal disease known as ash dieback arrived in the UK from mainland
Europe.
Which of the following could explain how ash dieback could have reached the UK
from mainland Europe?
1 Spores carried on the wind
2 Young diseased trees imported from Europe and planted in the UK
3 Contaminated soil from a previously infected crop
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer [1]
