AS LEVEL BIOLOGY B ADVANCING BILOGY
H022/01 FOUNDATIONS OF BIOLOGY
ACTUAL 2025 PAPER MERGED WITH
MARK SCHEME
vincent marekia
[COMPANY NAME] [Company address]
, 1
*1327104584*
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 70.
• The marks for each question are shown in brackets [ ].
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/4721/0] DC (CE/SG) 329633/4
OCR is an exempt Charity
Turn over
Section A
You should spend a maximum of 25 minutes on this section.
© OCR 2025
, 2
Write your answer for each question in the box provided.
1 Which of the statements about peak expiratory flow rate (PEFR) is correct?
A It increases as the age of a person increases.
B It is calculated by multiplying tidal volume by breathing rate.
C It is the maximum rate at which air can be forced out through the mouth.
D It is the volume of air breathed out in the first second of forced exhalation.
Your answer
[1]
2 Which option about why multicellular plants need transport systems is not correct?
A Assimilates must be transported from source to sink
B Diffusion distances are too long
C Multicellular plants have large surface area to volume ratios
D Water and mineral ions must be transported from roots to leaves
Your answer
[1] 3 The transmission electron micrograph shows the ultrastructure of a mammalian
cell.
P
Which option describes the function of the structure labelled P?
© OCR 2025 Turn over
, 3
A It produces ATP.
B It stores glycogen.
C It synthesises proteins.
D It synthesises ribosomes.
Your answer
[1] 4 A student observed a blood sample using a light microscope with a calibrated
eyepiece graticule. They measured the diameter of a lymphocyte and calculated its actual
diameter as 12 μm.
One unit of the calibrated eyepiece graticule = 2.4 μm.
What is the diameter of the lymphocyte measured by the student in eyepiece graticule
units?
A 0.2
B 5.0
C 9.6
D 28.8
Your answer
[1]
5 The graph shows the rate of an enzyme-controlled reaction with and without the
addition of a fixed quantity of substance Z.
Without substance Z
Rate of
reaction With substance Z
Substrate concentration
What is the molecule in substance Z?
A Cofactor
B Competitive inhibitor
© OCR 2025
H022/01 FOUNDATIONS OF BIOLOGY
ACTUAL 2025 PAPER MERGED WITH
MARK SCHEME
vincent marekia
[COMPANY NAME] [Company address]
, 1
*1327104584*
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 70.
• The marks for each question are shown in brackets [ ].
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/4721/0] DC (CE/SG) 329633/4
OCR is an exempt Charity
Turn over
Section A
You should spend a maximum of 25 minutes on this section.
© OCR 2025
, 2
Write your answer for each question in the box provided.
1 Which of the statements about peak expiratory flow rate (PEFR) is correct?
A It increases as the age of a person increases.
B It is calculated by multiplying tidal volume by breathing rate.
C It is the maximum rate at which air can be forced out through the mouth.
D It is the volume of air breathed out in the first second of forced exhalation.
Your answer
[1]
2 Which option about why multicellular plants need transport systems is not correct?
A Assimilates must be transported from source to sink
B Diffusion distances are too long
C Multicellular plants have large surface area to volume ratios
D Water and mineral ions must be transported from roots to leaves
Your answer
[1] 3 The transmission electron micrograph shows the ultrastructure of a mammalian
cell.
P
Which option describes the function of the structure labelled P?
© OCR 2025 Turn over
, 3
A It produces ATP.
B It stores glycogen.
C It synthesises proteins.
D It synthesises ribosomes.
Your answer
[1] 4 A student observed a blood sample using a light microscope with a calibrated
eyepiece graticule. They measured the diameter of a lymphocyte and calculated its actual
diameter as 12 μm.
One unit of the calibrated eyepiece graticule = 2.4 μm.
What is the diameter of the lymphocyte measured by the student in eyepiece graticule
units?
A 0.2
B 5.0
C 9.6
D 28.8
Your answer
[1]
5 The graph shows the rate of an enzyme-controlled reaction with and without the
addition of a fixed quantity of substance Z.
Without substance Z
Rate of
reaction With substance Z
Substrate concentration
What is the molecule in substance Z?
A Cofactor
B Competitive inhibitor
© OCR 2025
