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Title: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) With Marking Scheme Merged
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 7 June 2024 – Afternoon GCSE (9–1) Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) Time allowed: 1 hour 45 minutes You must have: H • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J 2 5 7 0 4 * Please write clearly in black ink. Do not write in the barcodes. Centre number First name(s) Last name INSTRUCTIONS Candidate number • 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 90. • 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 20 pages. ADVICE • Read each question carefully before you start your answer. 2 BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE © OCR 2024 3 1 Aerobic and anaerobic cellular respiration take place in human body cells. (a) Put one tick (✓) in each row of the table to describe aerobic and anaerobic respiration in animal cells such as human body cells. Only Only Both Neither aerobic and aerobic nor aerobic anaerobic anaerobic anaerobic Is exothermic Produces lactic acid Requires glucose Requires oxygen [4] (b) Complete the sentence about ATP production in respiration. Use words from the list. more than less than equal to The amount of ATP produced per molecule of reactant in aerobic respir
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 7 June 2024 – Afternoon GCSE (9–1) Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) Time allowed: 1 hour 45 minutes You must have: H • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J 2 5 7 0 4 * Please write clearly in black ink. Do not write in the barcodes. Centre number First name(s) Last name INSTRUCTIONS Candidate number • 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 90. • 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 20 pages. ADVICE • Read each question carefully before you start your answer. 2 BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE © OCR 2024 3 1 Aerobic and anaerobic cellular respiration take place in human body cells. (a) Put one tick (✓) in each row of the table to describe aerobic and anaerobic respiration in animal cells such as human body cells. Only Only Both Neither aerobic and aerobic nor aerobic anaerobic anaerobic anaerobic Is exothermic Produces lactic acid Requires glucose Requires oxygen [4] (b) Complete the sentence about ATP production in respiration. Use words from the list. more than less than equal to The amount of ATP produced per molecule of reactant in aerobic respir
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BIOLOGY B
OCR 2024
GCSE Biology B (Twenty First Century Science)
J257/04 Depth in Biology (Higher Tier)
With Marking Scheme Merged
Oxford Cambridge and RSA
Friday 7 June 2024 – Afternoon
GCSE (9–1) Biology B (Twenty First Century Science)
J257/04 Depth in Biology (Higher Tier)
Time allowed: 1 hour 45 minutes
H
You must have:
• a ruler (cm/mm)
You can use:
• an HB pencil
• a scientific or graphical calculator
*
J
2
5
7
0
4
*
Please write clearly in black ink
...
Centre number
Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink
...
• Write your answer to each question in the space provided
...
The question numbers must be clearly shown
...
• Where appropriate, your answer should be supported with working
...
INFORMATION
• The total mark for this paper is 90
...
• Quality of extended response will be assessed in questions marked with an asterisk (*)
...
ADVICE
• Read each question carefully before you start your answer
...
(a) Put one tick (✓) in each row of the table to describe aerobic and anaerobic respiration in
animal cells such as human body cells
...
Use words from the list
...
...
...
...
the amount of ATP produced per molecule of reactant in anaerobic
respiration
...
Crocus
Snowdrop
Daisy
Grass
A student wants to estimate the total number of snowdrops in the field
...
Small square
1
2
3
4
5
6
Number of snowdrops
5
8
2
9
0
6
(a)* Describe a method to collect the data in the table
...
...
...
...
...
...
...
[6]
© OCR 2024
5
(b) Use the student’s data to calculate the mean number of snowdrops per small square
...
[2]
2
(c) The area of the field is 600 m
...
25 m
...
Number of small squares that fit in the field =
...
Use the equation:
total number
of snowdrops =
in the field
mean number of snowdrops
per small square
×
number of small squares
that fit in the field
Total number of snowdrops in the field =
...
...
[1]
(f)
The student thinks their estimate is not very close to the true number of snowdrops in the field
...
...
[1]
© OCR 2024
Turn over
6
3
The heart, blood vessels and blood make up the human circulatory system
...
Put a ring around the correct options
...
Carbon dioxide / Oxygen is taken into and carbon dioxide / oxygen is taken out of the blood
by the gaseous exchange system
...
[3]
(b) The diagram shows a human heart
...
...
...
[2]
(ii) Suggest what would happen if structure C was faulty
...
...
...
Charlie needs to measure the pulse rate of a person
...
Describe the additional steps Charlie must take to measure and calculate the person’s pulse
rate in beats per minute
...
...
...
Person B is a fit person
...
Charlie measures their pulse rate every minute
...
[1]
(ii) Charlie makes sure that the two people are the same age, sex and
ethnicity
...
...
...
[2]
(iii) Suggest one other factor about the two people that should be the same
...
[1]
© OCR 2024
Turn over
8
The graph shows the pulse rate of each person before, during and after the test
...
Include data from the graph in your answer
...
...
...
...
...
...
[2]
(iii) Describe one way the data in the graph shows person B is fitter than person A
...
...
4
...
Fig
...
1
phytoplankton
zooplankton
small fish
large fish
(a) Which organism is the source of biomass for all other organisms in the food chain?
...
Use evidence from Fig
...
1
...
...
...
Use evidence from Fig
...
1
...
...
...
4
...
True
False
Fig
...
1 shows how many individuals are part of the food chain
...
There are four populations of organisms in the food chain
...
4
...
Fig
...
2
5
large fish
0
...
66
15 000
zooplankton
1
...
70
number of organisms
(i)
2
biomass (g / m )
Calculate the percentage of the phytoplankton biomass that is transferred to the large fish
...
Percentage =
...
4
...
...
...
...
...
...
...
[6]
© OCR 2024
Turn over
12
5
Different methods of contraception can be used to prevent pregnancy
...
Method of
contraception
(i)
Effectiveness
(% of pregnancies prevented)
How it is used
Maximum
During normal use
Diaphragm/cap
96
71–88
Inserted into the
vagina before sex
Hormone pill
99
91
Must be taken daily
Hormone injection
99
94
One injection lasts
8–13 weeks
Why are none of the methods shown guaranteed to prevent pregnancy?
Use data from the table
...
...
She wants an easy to use and reliable method of
contraception
...
Method:
...
...
[2]
© OCR 2024
13
(b) Layla’s partner can wear a condom on his penis during sexual intercourse to prevent
pregnancy
...
...
...
[2]
(c) Complete the sentences to explain how hormones control the menstrual cycle
...
Adrenaline
FSH
LH
Oestrogen
Progesterone
Thyroxine
...
...
...
...
[4]
(d) A hormone contraceptive pill contains progesterone
...
...
...
...
[3]
© OCR 2024
Turn over
14
6
Vegetable crops such as peas are grown to help feed the world’s population
...
Farmers started with wild pea plants and have changed the characteristics of the pea plants they
grow
...
The domesticated pea plants that resulted from this process produce more peas per plant
...
Evolution
Mutation
Natural selection
Selective breeding
[1]
(ii) Suggest two advantages of growing domesticated pea plants that produce more peas per plant
...
...
...
However, people
don’t want these burgers to taste of peas
...
Put statements A to D in the correct order to describe how scientists used genetic engineering to
add this gene to domesticated pea plants
...
B Put the flavourless pea gene in a suitable vector
...
D
Isolate the flavourless pea gene
...
[3]
(c) Carbon dioxide in the atmosphere is a greenhouse gas
...
Use ideas about carbon dioxide in your answer
...
...
...
...
(a) Complete the table to describe the substances taken into a plant and the processes they are
used for
...
...
[3]
(b) The mass of a plant in the morning is 50 g
...
(i)
Calculate the percentage increase in mass of the plant
...
Percentage increase in mass =
...
Suggest why the mass of the plant only increased by 1 g even though it took up 5 g of water
...
...
...
(i)
Where do plants get nitrate from?
Tick (✓) one box
...
Substance
Used to make
Oxygen
Nitrate
Proteins
Nucleotides
Phosphate
Water
Glucose
[2]
(d) Plants take in nitrate and water through the cell membrane of root hair cells
...
Which statement about the cell membrane of a root hair cell is true?
Tick (✓) one box
...
It is an exchange surface
...
It is part of the xylem
...
[1]
© OCR 2024
Turn over
18
(e) Some types of pollution in soil can affect plants
...
(i)
What will happen to the amount of nitrate taken into this root hair
cell? Explain your answer
...
...
...
...
...
...
[2]
END OF QUESTION PAPER
© OCR 2024
19
EXTRA ANSWER SPACE
If you need extra space use these lined pages
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
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...
OCR qualifications include
AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills,
Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT,
business, languages, teaching/training, administration and secretarial skills
...
OCR is a not-for-profit organisation; any surplus made
is invested back into the establishment to help towards the development of qualifications and
support, which keep pace with the changing needs of today’s society
...
It shows the basis on which marks were awarded by examiners
...
All examiners are instructed that alternative correct answers and unexpected approaches
in candidates’ scripts must be given marks that fairly reflect the relevant knowledge and
skills demonstrated
...
© OCR 2024
Oxford Cambridge and RSA Examinations
J257/04
Mark scheme
June 2024
MARKING INSTRUCTIONS
PREPARATION FOR MARKING
RM ASSESSOR
1
...
2
...
These are available in RM Assessor
...
Log-in to RM Assessor and mark the required number of practice responses (“scripts”) and the required number of standardisation
responses
...
Mark strictly to the mark scheme
...
Marks awarded must relate directly to the marking criteria
...
The schedule of dates is very important
...
If you experience problems, you must contact your Team Leader (Supervisor) without delay
...
If you are in any doubt about applying the mark scheme, consult your Team Leader by telephone, email or via the RM Assessor messaging
system
...
Crossed Out Responses
Where a candidate has crossed out a response and provided a clear alternative then the crossed out response is not marked
...
J257/04
Mark scheme
June 2024
Rubric Error Responses – Optional Questions
Where candidates have a choice of question across a whole paper or a whole section and have provided more answers than requir ed, then
all responses are marked and the highest mark allowable within the rubric is given
...
(The underlying assumption is that the candidate has penalised themselves
by attempting more questions than necessary in the time allowed
...
When a question requires candidates to select more than one option/multiple options, then local marking arrangements need to
ensure consistency of approach
...
Short Answer Questions (requiring only a list by way of a response, usually worth only one mark per response)
Where candidates are required to provide a set number of short answer responses then only the set number of responses should be marked
...
The remaining responses should not then be marked
...
(The underlying assumption is that the candidate
is attempting to hedge their bets and therefore getting undue benefit rather than engaging with the question and gi ving the most
relevant/correct responses
...
)
J257/04
Mark scheme
June 2024
Longer Answer Questions (requiring a developed response)
Where candidates have provided two (or more) responses to a medium or high tariff question which only required a single (deve loped)
response and not crossed out the first response, then only the first response should be marked
...
6
...
If the
candidate has continued an answer there, then add a tick to confirm that the work has been seen
...
Always check the pages (and additional objects if present) at the end of the response in case any answers have been continued there
...
8
...
Team Leaders must confirm the correct use of the NR button with their markers before live marking commences and should check this when
reviewing scripts
...
The RM Assessor comments box is used by your Team Leader to explain the marking of the practice responses
...
Do not use the comments box for any other reason
...
10
...
The report should contain notes on particular strengths displayed as well as common errors or weaknesses
...
J257/04
11
...
The
indicative scientific content in the Guidance column indicates the expected parameters for candidates’ answers, but be prepar ed to recognise
and credit unexpected approaches where they show relevance
...
Once the level is located, award the higher or lower mark:
The higher mark should be awarded where the level descriptor has been evidenced and all aspects of the communication statement (in
italics) have been met
...
In summary:
The skills and science content determines the level
...
Level of response questions on this paper are 2(a) and 4(e)(ii)
...
Mark scheme
Annotations available in RM Assessor
Annotation
Meaning
Correct response
Incorrect response
Omission mark
Benefit of doubt given
Contradiction
Rounding error
Error in number of significant figures
Error carried forward
Level 1
Level 2
Level 3
Benefit of doubt not given
Noted but no credit given
Ignore
June 2024
J257/04
13
...
Annotation
Meaning
/
alternative and acceptable answers for the same marking point
Separates marking points
DO NOT ALLOW
Answers which are not worthy of credit
IGNORE
Statements which are irrelevant
ALLOW
Answers that can be accepted
()
Words which are not essential to gain credit
__
Underlined words must be present in answer to score a mark
ECF
Error carried forward
AW
Alternative wording
ORA
Or reverse argument
J257/04
14
...
This mate rial includes:
•
the specification, especially the assessment objectives
•
the question paper
•
the mark scheme
...
You should ensure also that you are familiar with the administrative procedures related to the marking process
...
If you are examining for the first time, please read carefully Appendix 5 Introduction to Script Marking:
Notes for New Examiners
...
Your first point of contact is your Team Leader
...
AO1
...
AO1
...
Apply knowledge and understanding of scientific ideas and scientific enquiry, techniques and procedures
...
1
Apply knowledge and understanding of scientific ideas
...
2
Apply knowledge and understanding of scientific enquiry, techniques and procedures
...
1
Analyse information and ideas to interpret and evaluate, make judgements and draw conclusions and develop and improve
experimental procedures
...
AO3
...
AO3
...
AO3
...
AO3
...
AO3
...
AO3
...
AO3
...
AO3
...
9
J257/04
Mark scheme
Question
1 (a)
(b)
AO
Marks element
4
1
...
1
Guidance
J257/04
Question
2 (a)*
Mark scheme
Answer
Please refer to the marking instructions on page 4 of this
mark scheme for guidance on how to mark this question
...
2
4 x 3
...
There is a well-developed line of reasoning which is clear
and logically structured
...
June 2024
Guidance
AO2
...
3a Developing an appropriate method to
collect the data
For example:
• place quadrats/squares on the field/ground
• use identification key/app to identify snowdrops
• count/record number of snowdrops in each
square/quadrat
• idea of repeating / doing it 6/multiple times
• ref
...
g
...
There is a line of reasoning presented with some
structure
...
Level 1 (1–2 marks)
Describe/name apparatus needed OR how to use
apparatus to collect data OR how to avoid bias in the
field
...
3a How to avoid bias in the data
• measure area / (length and width of) the field
divide field into a grid
• label grid with numbers or letters / coordinates
• use random number table/generator/coordinates
to decide where to place the squares/quadrats
• place squares/quadrats randomly OR
evenly/regularly across the field
IGNORE idea of transect / squares next to each
other
There is an attempt at a logical structure with a line of
reasoning
...
0 marks
No response or no response worthy of credit
...
2
2
2
...
2b
1
3
...
3b
Marks
FIRST CHECK THE ANSWER ON ANSWER LINE
If answer = 5 award 2 marks
June 2024
Guidance
5+8+2+9+0+6=30
= 5
÷6
(c)
FIRST CHECK THE ANSWER ON ANSWER LINE
If answer = 2400 award 2 marks
= 2400
600 ÷ 0
...
1
oxygen AND carbon dioxide
urea AND excretory
glucose AND digestive
(a)
(b)
Answer
(i)
2
1
...
1
Ensure correct chamber quoted
less blood would get to the body / blood pressure in
ALLOW other reasonable suggestions of
consequences, e
...
body cells/tissues/organs would
the body would be lower
receive less blood/oxygen/glucose
(c)
count the number of beats (in the 20 seconds)
multiply by 3 to convert to beats per minute
(d)
2
...
2
2
2
...
3a
Guidance
DO NOT ALLOW fitness/health, age/sex/ethnicity or
duration of exercising on the bike, as these are given
in the question
ALLOW “weight”
IGNORE “height” / “lifestyle”
caffeine intake (before the test)
water intake (before the test)
amount of rest (before the test)
DO NOT ALLOW “diet” unqualified
food/sugar/carbohydrate/protein intake (before the
test)
(e)
(i)
Any three from:
3
3
...
1
Guidance
DO NOT ALLOW ‘’energy produced / made /
created’’
heart beats faster to transfer more oxygen(ated blood)
around the body / to transfer more glucose around the
body
to supply muscle (cells) (oxygen/glucose) for (aerobic)
respiration
(more) respiration in (contracting/working) muscle
cells provides ATP/energy
to remove carbon dioxide produced by respiration (in
muscle cells)
(iii)
Any one from:
1
person B’s resting/normal pulse rate is lower (than
person A’s)
ORA for person B throughout
Statements must be comparative
ALLOW uses figures to show this
ALLOW heart rate for pulse rate
person B’s maximum pulse rate is lower (than person
A’s) / it increases less during the exercise period
person B’s pulse rate returns to its resting/normal
value faster (than person A’s) / person B’s recovery
rate is faster
3
...
1
3
...
1b
2
2
...
4
...
6 award 3 marks
3
= 0
...
1 ÷ 17
...
6 (% to 1 sig
...
)
Three correct ticks = 2 marks
Two correct ticks = 1 mark
2 x 2
...
2
16
ALLOW ECF if the correct values from the figure are
chosen but used incorrectly for the second and third
MPs
J257/04
Question
4 (e) (ii)*
Mark scheme
Answer
Please refer to the marking instructions on page 4 of this
mark scheme for guidance on how to mark this question
...
An understanding of biomass transfer to explain the trend
...
There is a well-developed line of reasoning which is clear
and logically structured
...
Level 2 (3–4 marks)
Limited explanation across all three areas or full
explanation of two areas:
Interpretation of the biomass data
...
Why the food chain can only support 5 large fish
...
The information presented is relevant and supported by
some evidence
...
June 2024
AO
element
Guidance
2 x 3
...
1a Interpreting the biomass data
For example:
4 x 2
...
2 Applying understanding of biomass
transfer to explain the trend
For example:
• some biomass is used in cellular respiration in
producer / phytoplankton
• not all organisms are eaten
• not all parts of organisms are eaten/digested
(e
...
bones)
• some ingested biomass is used in cellular
respiration / used to provide energy / used to
warm the body / surroundings in consumers
• some ingested biomass is egested / excreted
(e
...
faeces, carbon dioxide)
AO2
...
5% reaches top
• percentage/efficiency of biomass transfer is
low
There is an attempt at a logical structure with a line of
reasoning
...
17
J257/04
Question
Mark scheme
Answer
Marks
0 marks
No response or no response worthy of credit
...
1a
2
3
...
1
Question
5
(a)
(i)
effectiveness is less than 100%
(ii)
June 2024
(hormone) injection
Guidance
And any one from:
one injection lasts 8-13 weeks / don’t have to take it
daily / don’t have to remember to insert it into the
vagina before sex
high(est) effectiveness / 99% maximum / 94% during
normal use
(b)
condom prevents transmission/spread
ALLOW “protects against / from …
...
g
...
1
J257/04
Mark scheme
Question
5
(d)
Answer
Marks
Any three from:
3
AO
element
1
...
1
2
...
1
Marks
June 2024
Guidance
the world’s population is increasing (so more food is
needed)
idea that farmers will sell more / supports their
livelihood / more profit
increased food security
(b)
DBAC
D before B
B before A
A before C
(c)
Any three from:
growing (pea) plants releases less carbon
dioxide/greenhouse gas than farming animals / ORA
3
(because) plants absorb/remove carbon dioxide from
the atmosphere for photosynthesis
(and) animals release carbon dioxide into the
atmosphere due to respiration
(and) animals release methane which is another
greenhouse gas into the atmosphere
(it’s better to reduce levels of ) greenhouse gases
because they cause climate change / global warming /
biodiversity loss / habitat loss
21
2
...
1
Guidance
Process
Carbon dioxide
(b)
June 2024
ALLOW CO2 / CO2 but DO NOT ALLOW CO2 or Co
FIRST CHECK THE ANSWER ON ANSWER LINE
If answer = 10 award 2 marks
2
2
...
1
x 100 = 10 (%)
(ii)
ALLOW ECF for their value for MP1 X 100
Any two from:
2
2
...
g
...
1
1
...
1
Any three from:
3
2
...
1
Title: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) With Marking Scheme Merged
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 7 June 2024 – Afternoon GCSE (9–1) Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) Time allowed: 1 hour 45 minutes You must have: H • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J 2 5 7 0 4 * Please write clearly in black ink. Do not write in the barcodes. Centre number First name(s) Last name INSTRUCTIONS Candidate number • 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 90. • 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 20 pages. ADVICE • Read each question carefully before you start your answer. 2 BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE © OCR 2024 3 1 Aerobic and anaerobic cellular respiration take place in human body cells. (a) Put one tick (✓) in each row of the table to describe aerobic and anaerobic respiration in animal cells such as human body cells. Only Only Both Neither aerobic and aerobic nor aerobic anaerobic anaerobic anaerobic Is exothermic Produces lactic acid Requires glucose Requires oxygen [4] (b) Complete the sentence about ATP production in respiration. Use words from the list. more than less than equal to The amount of ATP produced per molecule of reactant in aerobic respir
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 7 June 2024 – Afternoon GCSE (9–1) Biology B (Twenty First Century Science) J257/04 Depth in Biology (Higher Tier) Time allowed: 1 hour 45 minutes You must have: H • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J 2 5 7 0 4 * Please write clearly in black ink. Do not write in the barcodes. Centre number First name(s) Last name INSTRUCTIONS Candidate number • 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 90. • 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 20 pages. ADVICE • Read each question carefully before you start your answer. 2 BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE © OCR 2024 3 1 Aerobic and anaerobic cellular respiration take place in human body cells. (a) Put one tick (✓) in each row of the table to describe aerobic and anaerobic respiration in animal cells such as human body cells. Only Only Both Neither aerobic and aerobic nor aerobic anaerobic anaerobic anaerobic Is exothermic Produces lactic acid Requires glucose Requires oxygen [4] (b) Complete the sentence about ATP production in respiration. Use words from the list. more than less than equal to The amount of ATP produced per molecule of reactant in aerobic respir