BESTLEC
Mark Scheme Provided at The End of Paper
Oxford Cambridge and RSA
Wednesday 5 June 2024 – Afternoon
A Level Biology B (Advancing Biology)
H422/01 Fundamentals of biology
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inside this document)
• a ruler (cm/mm)
You can use:
• a scientific or graphical calculator
C
* H 4 2 2 0 1 *
LE
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
ST
First name(s)
Last name
BE
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 110.
• 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 40 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2024 [601/4720/9] OCR is an exempt Charity
DC (CJ/SW) 331042/5 Turn over
1
, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer for each question in the box provided.
1 The diagram shows a molecule of α-glucose.
X
Y
Z OH
The table below shows chemical groups X, Y and Z labelled on the diagram.
C
Chemical group
LE
X Y Z
A OH CH2OH H
B CH2OH OH H
ST
C H OH CH2OH
D H CH2OH OH
Which of the rows, A to D, is correct?
BE
Your answer
[1]
© OCR 2024
, 3
This is an electron micrograph of the ultrastructure of a leucocyte.
L
C
LE
× 8000
Use the electron micrograph to answer questions 2 and 3.
ST
2 Which of the options identifies the leucocyte in the electron micrograph?
A Lymphocyte
B Macrophage
BE
C Monocyte
D Neutrophil
Your answer
[1]
3 What is the role of the organelle labelled L?
A Aerobic respiration
B Lipid synthesis
C Protein synthesis
D Transport
Your answer
[1]
© OCR 2024 Turn over
, 4
4 Which of the statements about the blood clotting process is not correct?
A Fibrinogen fibres form a mesh to trap red blood cells.
B Platelets are activated and release thromboplastin.
C Thrombin hydrolyses a soluble plasma protein into insoluble protein fibres.
D Thromboplastin requires calcium ion cofactors.
Your answer
[1]
5 The following statement describes a feature of the genetic code:
The same codon codes for the same amino acid in almost all species.
Which feature of the genetic code is being described?
C
A Degenerate
B Non-overlapping
LE
C Triplet
D Universal
ST
Your answer
[1]
BE
© OCR 2024
Mark Scheme Provided at The End of Paper
Oxford Cambridge and RSA
Wednesday 5 June 2024 – Afternoon
A Level Biology B (Advancing Biology)
H422/01 Fundamentals of biology
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inside this document)
• a ruler (cm/mm)
You can use:
• a scientific or graphical calculator
C
* H 4 2 2 0 1 *
LE
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
ST
First name(s)
Last name
BE
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 110.
• 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 40 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2024 [601/4720/9] OCR is an exempt Charity
DC (CJ/SW) 331042/5 Turn over
1
, 2
Section A
You should spend a maximum of 40 minutes on this section.
Write your answer for each question in the box provided.
1 The diagram shows a molecule of α-glucose.
X
Y
Z OH
The table below shows chemical groups X, Y and Z labelled on the diagram.
C
Chemical group
LE
X Y Z
A OH CH2OH H
B CH2OH OH H
ST
C H OH CH2OH
D H CH2OH OH
Which of the rows, A to D, is correct?
BE
Your answer
[1]
© OCR 2024
, 3
This is an electron micrograph of the ultrastructure of a leucocyte.
L
C
LE
× 8000
Use the electron micrograph to answer questions 2 and 3.
ST
2 Which of the options identifies the leucocyte in the electron micrograph?
A Lymphocyte
B Macrophage
BE
C Monocyte
D Neutrophil
Your answer
[1]
3 What is the role of the organelle labelled L?
A Aerobic respiration
B Lipid synthesis
C Protein synthesis
D Transport
Your answer
[1]
© OCR 2024 Turn over
, 4
4 Which of the statements about the blood clotting process is not correct?
A Fibrinogen fibres form a mesh to trap red blood cells.
B Platelets are activated and release thromboplastin.
C Thrombin hydrolyses a soluble plasma protein into insoluble protein fibres.
D Thromboplastin requires calcium ion cofactors.
Your answer
[1]
5 The following statement describes a feature of the genetic code:
The same codon codes for the same amino acid in almost all species.
Which feature of the genetic code is being described?
C
A Degenerate
B Non-overlapping
LE
C Triplet
D Universal
ST
Your answer
[1]
BE
© OCR 2024
