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Title: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier)With Marking Scheme Merged
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier)With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 10 May 2024 – Morning GCSE (9–1) Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier) Time allowed: 1 hour 45 minutes You must have: • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J F 2 5 7 0 1 * 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 [ ]. • This document has 28 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 (a) Draw lines to connect each organ system to its function. Organ system Digestive system Endocrine system Nervous system Respiratory system (b) Which structure is the smallest? Tick (✓) one box. Cell Nucleus Organ Tissue (c) Which structure is the smallest? Tick (✓) one box. Cell Chromosome Gene Nucleus Function Produce and release hormones Gaseous exchange Coordinate fast responses to stimuli Absorb dissolved food molecules [3]
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier)With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 10 May 2024 – Morning GCSE (9–1) Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier) Time allowed: 1 hour 45 minutes You must have: • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J F 2 5 7 0 1 * 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 [ ]. • This document has 28 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 (a) Draw lines to connect each organ system to its function. Organ system Digestive system Endocrine system Nervous system Respiratory system (b) Which structure is the smallest? Tick (✓) one box. Cell Nucleus Organ Tissue (c) Which structure is the smallest? Tick (✓) one box. Cell Chromosome Gene Nucleus Function Produce and release hormones Gaseous exchange Coordinate fast responses to stimuli Absorb dissolved food molecules [3]
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BIOLOGY B
OCR 2024
GCSE Biology B (Twenty First Century Science)
J257/01 Breadth in biology (Foundation
Tier)With Marking Scheme Merged
Oxford Cambridge and RSA
Friday 10 May 2024 – Morning
GCSE (9–1) Biology B (Twenty
First Century Science)
J257/01 Breadth in biology (Foundation Tier)
Time allowed: 1 hour 45 minutes
F
You must have:
• a ruler (cm/mm)
You can use:
• an HB pencil
• a scientific or graphical calculator
*
J
2
5
7
0
1
*
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
...
• This document has 28 pages
...
2
BLANK PAGE
PLEASE DO NOT WRITE ON THIS PAGE
© OCR 2024
3
1
(a) Draw lines to connect each organ system to its function
...
Cell
Nucleus
Organ
Tissue
[1]
(c) Which structure is the smallest?
Tick (✓) one box
...
Men
Women
All other
causes
All other
18%
causes
18%
Dementia
Cardiovascular
disease
29%
28%
& Alzheimer’s 6%
Dementia &
Alzheimer’s
Respiratory
disease
14%
12%
Cancer
32%
Cardiovascular
disease
Respiratory
disease
14%
Cancer
27%
Diabetes
1%
Diabetes
1%
(a) Which statements about the causes of death in men and women are true and which are false?
Tick (✓) one box in each row
...
A bigger proportion of women died of cancer than men
...
The same proportion of men and women died of respiratory disease
...
1
...
[2]
© OCR 2024
5
(c) Complete the sentences to describe the circulatory system
...
alveoli
blood
capillaries
impulses
nerves
valves
The job of the human circulatory system is to transport
...
around the body
...
The heart contains
...
[3]
(d) Which two substances do the kidneys filter from the blood to form urine?
Tick (✓) two boxes
...
The student removes 3 leaves from the same plant
...
Leaf 2 – they cover the upper surface of the leaf in waterproof grease
...
The results of the experiment are shown in the diagram
...
There are no stomata on the lower surface of the leaf
...
There are the same number of stomata on the upper and lower surface of the leaf
...
[1]
(b) Explain why leaf 3 did not wilt
...
...
...
Method
...
Expected result
...
[2]
(d) Which statements about stomata are true and which are false?
Tick (✓) one box in each row
...
Stomata allow water to enter the leaf
...
The size of the stomata is controlled by guard cells
...
Photosynthesis
Reproduction
Respiration
[1]
(f)
Which structure transports water up the plant?
...
Charles Darwin and Alfred Russel Wallace
...
Gregor Mendel and Alfred Russel Wallace
...
A chemical called warfarin can be used to kill rats
...
A A mutation gave some rats resistance to warfarin
...
C
Resistant rats were more likely to reproduce
...
E The allele for resistance was passed to offspring
...
[4]
(c) Warfarin prevents blood clotting
...
...
Male birds have two Z chromosomes
...
(a) Complete the Punnett square to show that a bird breeder has a 0
...
Sperm cells
Egg cells
[3]
(b) Complete the table to compare sex determination in birds and humans
...
Only birds
Only humans
Both birds
and humans
Sex is determined by two different
chromosomes
...
In females, sex is determined by the
presence of two different chromosomes
...
...
...
...
[3]
(d) The diagram shows the structure of DNA
...
2
...
C
B
A
D
(a) Which letter shows the retina?
...
[1]
(c) What role does the optic nerve have in the functioning of the eye?
Tick (✓) one box
...
Controls the amount of light that enters the eye
...
Transmits nerve impulses to the brain
...
Cataracts affect the lens
...
...
...
[2]
© OCR 2024
13
(e) Surgical removal of cataracts in babies can be done, but there may be problems after surgery
...
All the babies grew a new lens within 3 months
...
...
...
[2]
© OCR 2024
Turn over
14
7
Foot and Mouth is a disease found in cattle, sheep and pigs
...
(a) Name another type of organism that causes disease
...
[1]
(b) Foot and Mouth is spread between animals directly by contact and indirectly through
transmission on equipment and people
...
The virus spread across the country very rapidly
...
Suggest why the government decided to take this approach
...
...
State two ways
...
...
...
...
[1]
© OCR 2024
15
(d) Animals can be vaccinated against Foot and Mouth
...
...
...
...
[3]
(e) Suggest why vaccinating animals when the outbreak happened was not a solution to
the problem
...
...
Tick (✓) one box in each row to show whether the statement describes meiosis or mitosis
...
Cells formed contain half the number of chromosomes
...
There are two cell divisions
...
Suggest why sperm cells need a lot of mitochondria
...
...
...
A canyon is a deep, narrow valley with steep sides
...
Explain how the formation of these two new species happened
...
...
...
These squirrels are producing sperm that cannot swim
...
...
3 °C and 39
...
Vets suggest that owners measure their dog’s temperature so that they are aware of their
dog’s normal body temperature
...
...
Temperature (°C)
1
38
...
9
3
38
...
Give your answer to 1 decimal place
...
°C [3]
(ii) Why is it sensible to measure the dog’s temperature a few times and then calculate the mean?
...
[1]
© OCR 2024
19
(c) Dog owners are advised to take their dog to the vet if its temperature is consistently over 40
°C
...
They measure their dog’s temperature every hour for 7 hours
...
0
39
...
4
40
...
0
39
...
0
Should the owner take the dog to the vet?
Explain your answer
...
...
...
Explain
why this could be harmful to the dog’s health
...
...
...
(a)
(i) Fig
...
1 shows the equipment the student sets up
...
10
...
10
...
Include in your answer:
•
what they will change
•
what they will keep the same
•
what data they will record
...
...
...
...
...
[3]
© OCR 2024
21
(ii) Fig
...
2 shows a different set of equipment that can be used
...
10
...
10
...
Explain why
...
...
...
...
10
...
Fig
...
3
B
Rate of
photosynthesis
A
Light intensity
Which section or sections of the graph in Fig
...
3 show the relationship y = mx + c ?
Tick (✓) one box
...
Polar Bear
Wolf
Arctic Fox
Reindeer
Arctic Hare
Lemming
Grass
Wildflower
(a) What does each picture in the food web represent?
Tick (✓) one box
...
There are
...
There are
...
The arctic fox is in trophic level
...
An arctic fox eats the lemming, but only consumes 75 g of the
lemming
...
Give your answer to 3 significant figures
...
% [3]
(d) When lemmings are in short supply, the arctic fox will eat eggs
...
Which reagent is used to test for protein?
...
Put a ring around the two components that make up a lipid
...
Surface area of the egg = 67
...
35 : 1
...
You must write the question numbers clearly
in the margin
...
...
...
...
...
...
...
...
...
...
...
...
...
© OCR 2024
28
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
Foundation
GCSE
Biology B Twenty First Century Science
J257/01: Breadth in Biology (Foundation Tier)
General Certificate of Secondary Education
Mark Scheme for June 2024
Oxford Cambridge and RSA Examinations
OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of
qualifications to meet the needs of candidates of all ages and abilities
...
It is also responsible for developing new specifications to meet national requirements and
the needs of students and teachers
...
This mark scheme is published as an aid to teachers and students, to indicate the requirements
of the examination
...
It does not
indicate the details of the discussions which took place at an examiners’ meeting before
marking commenced
...
Mark schemes should be read in conjunction with the published question papers and the
report on the examination
...
Make sure that you have accessed and completed the relevant training packages for on-screen marking: RM Assessor Online Training; OCR
Essential Guide to Marking
...
Make sure that you have read and understood the mark scheme and the question paper for this unit
...
3
...
MARKING
1
...
2
...
3
...
It is essential that you meet the RM Assessor 50% and 100% (traditional 50% Batch 1 and
100% Batch 2) deadlines
...
4
...
5
...
Where no
alternative response has been provided, examiners may give candidates the benefit of the doubt and mark the crossed out response where
legible
...
Enter a mark for each question answered into RM
assessor, which will select the highest mark from those awarded
...
)
Multiple Choice Question Responses
When a multiple choice question has only a single, correct response and a candidate provides two responses (even if one of these responses
is correct), then no mark should be awarded (as it is not possible to determine which was the first response selected by the candidate)
...
Contradictory Responses
When a candidate provides contradictory responses, then no mark should be awarded, even if one of the answers is correct
...
The response space should be marked from left to right on each line and then line by line until the required number of responses have been
considered
...
Examiners will have to apply judgement as to whether a ‘second response’
on a line is a development of the ‘first response’, rather than a separate, discrete response
...
)
Short Answer Questions (requiring a more developed response, worth two or more marks)
If the candidates are required to provide a description of, say, three items or factors and four items or factors are provided, then mark on a
similar basis – that is downwards (as it is unlikely in this situation that a candidate will provide more than one response in each section of the
response space
...
Examiners will need to apply professional
judgement as to whether the second (or a subsequent) response is a ‘new start’ or simply a poorly expressed continuation of the first
response
...
7
...
If
the candidate has continued an answer there then add a tick to confirm that the work has been seen
...
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
...
9
...
The report should contain notes on particular strengths displayed as well as common errors or weaknesses
...
4
J257/01
10
...
The
indicative scientific content in the Guidance column indicates the expected parameters for candidates’ answers, but be prepared 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
...
5
J257/01
11
...
Mark Scheme
Abbreviations, annotations and conventions used in the detailed Mark Scheme (to include abbreviations and subject-specific
conventions)
...
Mark Scheme
June 2024
Subject-specific Marking Instructions
INTRODUCTION
Your first task as an Examiner is to become thoroughly familiar with the material on which the examination depends
...
You should ensure that you have copies of these materials
...
These are set out in the OCR
booklet Instructions for Examiners
...
Please ask for help or guidance whenever you need it
...
8
J257/01
Mark Scheme
June 2024
The breakdown of Assessment Objectives for GCSE (9-1) in Biology B:
Assessment Objective
AO1
Demonstrate knowledge and understanding of scientific ideas and scientific techniques and procedures
...
1
Demonstrate knowledge and understanding of scientific ideas
...
2
AO2
Demonstrate knowledge and understanding of scientific techniques and procedures
...
AO2
...
AO2
...
AO3
AO3
...
Analyse information and ideas to interpret and evaluate
...
1a
Analyse information and ideas to interpret
...
1b
Analyse information and ideas to evaluate
...
2
Analyse information and ideas to make judgements and draw conclusions
...
2a
Analyse information and ideas to make judgements
...
2b
Analyse information and ideas to draw conclusions
...
3
Analyse information and ideas to develop and improve experimental procedures
...
3a
Analyse information and ideas to develop experimental procedures
...
3b
Analyse information and ideas to improve experimental procedures
...
1
✓✓✓
(b)
Nucleus
(c)
Gene
✓
1
1
...
1
✓
Guidance
4 correct lines = 3 marks
2 or 3 correct lines = 2 marks
1 correct line = 1 mark
J257/01
2
Mark Scheme
Question
(a)
June 2024
Answer
Marks
2
AO
3
...
1
✓
Guidance
4 correct = 2 marks
2 or 3 correct = 1 mark
✓
✓
✓
✓✓
(b)
Any two from
✓
Smoking
✓
Alcohol
✓
Obesity/being overweight
Named example of poor diet e
...
high fat/salt/sugar/refined carbohydrate
Lack of exercise
(c)
(d)
✓
✓
✓
Stress
✓
Recreational drugs
✓
blood
✓
capillaries
valves
Urea
ALLOW named
example e
...
Ecstasy
3
1
...
1
✓
✓
Water
IGNORE drinking
ALLOW being
underweight
IGNORE
poor/unhealthy diet
unqualified/eating bad
things/not a balanced
diet
IGNORE eating
fatty/salty/sugary foods
✓
11
J257/01
Mark Scheme
Question
3
(a)
(b)
Answer
There are more stomata on the lower surface of the leaf
...
2a
3
...
3a
ALLOW get a leaf and do nothing to it
✓
ALLOW shrivel/droop
12
J257/01
Mark Scheme
Question
(d)
June 2024
Marks
2
AO
1
...
1
1
...
1
2
...
1
Answer
✓
Guidance
4 correct = 2 marks
2 or 3 correct = 1 mark
✓
✓
✓
✓✓
(e)
(f)
Photosynthesis
Xylem
✓
✓
Question
4
Answer
(a)
(b)
Charles Darwin and Alfred Russel Wallace
(c)
Transport oxygen
✓
✓✓✓✓
AD C E B
✓
13
Guidance
A before D =
D before C =
C before E =
E before B =
1 mark
1 mark
1 mark
1 mark
ALLOW carry/move/transfer oxygen
IGNORE provide oxygen
DO NOT ALLOW nutrients
J257/01
Mark Scheme
Question
5
(a)
June 2024
Answer
Male gametes Z and Z
Marks
AO
3
2
...
g
...
1 3 correct = 2 marks
1 or 2 correct = 1 mark
J257/01
Mark Scheme
(c)
Any three from
Y chromosome (important in development of male characteristics)
(SRY) gene (on the Y chromosome)
(Causes the development of) testes
3
✓
ALLOW males have XY
chromosomes
IGNORE just males are XY with no
mention of chromosomes in
answer
DO NOT ALLOW males are
YY/have two Y chromosomes
✓
✓
ALLOW testosterone
✓
(d)
2
Sugar
✓
Phosphate
C
Answer
✓
1
...
1
1
...
1
2
1 x 1
...
1
ALLOW answers anywhere in the
response area
IGNORE double helix
Guidance
✓
ALLOW creates a cloudy film over the lens
Any one from
(Cloudy lens) reduces light entering
✓
Idea of (cloudy lens causing) blurred/misty/impaired vision
1 x 2
...
g
...
2
ALLOW a mixed response
ALLOW (other babies offered treatment) would
have improved vision/would be able to
see/have improved sight
IGNORE babies would have a better quality
of life
The treatment restored eyesight/was successful (in the
babies in the study)
June 2024
✓
ALLOW the idea that 0%/no babies/0 out of 12
did not re-grow a lens
ALLOW for 2 marks the treatment was
100% successful
(No)
Only tested on 12 babies
✓
Long term/future effects not known
ALLOW more testing/research is needed
✓
Idea of risk associated with surgery / complications after
surgery
✓
IGNORE surgery is dangerous
IGNORE surgery is risky because it may
leave stem cells behind
ALLOW for 2 marks the outcome outweighs the
risk of surgery
ALLOW for 1 mark idea that even if the new
lens developed a cataract again, vision
would not be worse than before the operation
16
J257/01
Mark Scheme
Question
7
Answer
(a)
Protist
(b)
1
AO
element
1
...
2a
Marks
Any one from
Bacteria
✓
Fungi
June 2024
✓
Guidance
✓
Any one from
Prevent (further) spread
✓
IGNORE just to reduce the number of cases
ALLOW to reduce the number of new cases
Reduce the chance of contact between susceptible/
✓
healthy and infected animals
✓
To eradicate the virus quickly as possible
IGNORE to kill the virus quickly
Idea of minimal treatment options e
...
antibiotic
treatment would not work
✓
✓
Reduce economic losses
✓
Food security concerns
✓
Prevent animals suffering
✓
Minimise impact on international trade
Prevent infection of wild animals
(c)
(i)
Any two from
✓
2
✓
Observe animals for signs of disease
✓
Idea of testing (to establish a diagnosis)
✓
Isolate/prevent contact between (infected) animals
2
...
g
...
1
ALLOW shower between farms
ALLOW change clothes between farms
Wash hands between farm visits
✓
Wear protective clothing/gloves
Clean/disinfect boots/clothing (when entering and
✓
leaving farms)
✓
Clean/disinfect equipment used on animals
✓
Clean/disinfect machinery/car
✓
Prevent unnecessary visits to farms
IGNORE the vet can be vaccinated against
Foot and Mouth
(d)
Any three from
Vaccine contains safe form of virus/pathogen OR
antigen for foot and mouth/virus/pathogen
3
2
...
2a
IGNORE just that the disease had already
spread
J257/01
Mark Scheme
Question
8
June 2024
Answer
Marks
(a)
3
✓
✓
AO
Guidance
element
1
...
1
ALLOW mitochondria release
energy/mitochondria needed for
(release of) energy
IGNORE because sperm need
energy to swim
DO NOT ALLOW mitochondria
produce/make energy
Produce ATP
✓
ATP needed for movement/swimming
✓
ALLOW sperm need ATP to get
to the egg
19
J257/01
(c)
Mark Scheme
Any two from
Idea of geographical separation (described)
June 2024
2
✓
2
...
2a
ALLOW idea of endangered or
extinction
J257/01
Mark Scheme
Question
9
Answer
(a)
June 2024
Marks
Any one from
Idea they would know if the dog was ill because its
temperature would be too low/too
high/abnormal/different (from normal)
1
AO
element
2
...
8 award 3 marks
38
...
9 + 38
...
3
1
...
3 3 / 38
...
= 38
...
p
...
g
...
p
...
76(666
...
7 / 39 for 2 marks
(ii)
Any one from
Idea that temperature fluctuates
1
✓
Idea of identifying outliers/anomalies
2
...
1 above 40 (°C) / only over 40 (°C)
once / most readings/5/5 hours are under 40 (°C) /
does not remain over 40 (°C) for long
June 2024
2
3
...
4 (°C) / the dog’s mean
temperature does not exceed 40 (°C)
✓
Dog might have a high normal temperature / normally
have a temperature that is higher than the normal
range
(d)
✓
Any two from
Enzymes/proteins/active sites (of enzymes)
change/lose shape
2
ALLOW denatured
✓
Idea of enzyme function being adversely affected
Metabolic reactions affected
2
...
2
(Count) the number of bubbles produced by the plant
over a set/stated period of time
Guidance
ALLOW stated distances
ALLOW change the intensity of the
bulb/lamp/light source
IGNORE amount of light
ALLOW time how long it takes to count stated
number of bubbles
IGNORE ref to rate unqualified
IGNORE record the speed of the bubbles
✓
Any one from
Idea that will control or keep the same:(Piece/type/species/size/length) pondweed
✓
✓
External light sources
✓
Temperature
✓
Carbon dioxide concentration
Volume/stated volume of water
✓
pH of water
(ii)
✓
Any two from
Idea that bubbles/gas/oxygen enters/is collected in the
syringe/equipment OR bubbles/gas/oxygen can’t
escape
✓
2
3
...
1
2
...
1
Guidance
Guidance
✓
✓
2
✓
3
3
1
AO
element
3
...
5% award 3 marks
75 ÷ 82 / 0
...
91463415 x 100 / 91
...
4 (and any correct evaluated
number) for 2 marks
ALLOW if MP1 is not awarded, credit any
number below 1 multiplied by 100
...
5%
(d)
(i)
(ii)
Biuret
✓
ALLOW an incorrect evaluated number
correctly rounded to 3 sig figs
✓
Fatty acids
✓
Glycerol
✓
(iii) Ratio of 67
...
5 ÷ 50 = 1
...
2
1
...
2
ALLOW 50 ÷ 1 = 50
ALLOW 1 x 50 = 50
ALLOW 1
...
5
ALLOW 67
...
35 = 50
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Title: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier)With Marking Scheme Merged
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier)With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 10 May 2024 – Morning GCSE (9–1) Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier) Time allowed: 1 hour 45 minutes You must have: • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J F 2 5 7 0 1 * 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 [ ]. • This document has 28 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 (a) Draw lines to connect each organ system to its function. Organ system Digestive system Endocrine system Nervous system Respiratory system (b) Which structure is the smallest? Tick (✓) one box. Cell Nucleus Organ Tissue (c) Which structure is the smallest? Tick (✓) one box. Cell Chromosome Gene Nucleus Function Produce and release hormones Gaseous exchange Coordinate fast responses to stimuli Absorb dissolved food molecules [3]
Description: OCR 2024 GCSE Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier)With Marking Scheme Merged BIOLOGY B Oxford Cambridge and RSA Friday 10 May 2024 – Morning GCSE (9–1) Biology B (Twenty First Century Science) J257/01 Breadth in biology (Foundation Tier) Time allowed: 1 hour 45 minutes You must have: • a ruler (cm/mm) You can use: • an HB pencil • a scientific or graphical calculator * J F 2 5 7 0 1 * 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 [ ]. • This document has 28 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 (a) Draw lines to connect each organ system to its function. Organ system Digestive system Endocrine system Nervous system Respiratory system (b) Which structure is the smallest? Tick (✓) one box. Cell Nucleus Organ Tissue (c) Which structure is the smallest? Tick (✓) one box. Cell Chromosome Gene Nucleus Function Produce and release hormones Gaseous exchange Coordinate fast responses to stimuli Absorb dissolved food molecules [3]