A-level
BIOLOGY ACTUAL 2025 PAPER MERGED
WITH MARK SCHEME
Paper 2
Please write clearly in block capitals.
Candidate number
Centre number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 2
For Examiner’s Use
Friday 13 June 2025 Morning Time allowed: 2
Question Mark
hours
1
Materials 2
For this paper you must have:
3
• a ruler with millimetre measurements • a scientific calculator.
4
Instructions
5
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page. 6
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write outside 7
the box around each page or on blank pages.
8
9
10
TOTAL
, 2
Do not
write
outside the
box
• If you need extra space for your answer(s), use the lined pages at the end of this book. Write the
question number against your answer(s).
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
*jun257402201* 7402/2
IB/M/Jun25/G4007/V5
Answer all questions in the spaces provided.
IB/M/Jun25/7402/2
, 3
Do not write outside the
. box
0 1 .1 In the following passage, the numbered spaces can be filled with biological terms.
Glycolysis is the first stage of respiration. It occurs in the (1) of cells and is
an anaerobic process. Glycolysis involves the (2) of glucose to glucose
phosphate, using ATP. The oxidation of triose phosphate to (3) results in
the net gain of ATP and reduced (4) .
Write the correct biological term beside each number below that matches the
space in the passage.
[2 marks]
0 1
1
2
3
4
.2 The equation for the aerobic respiration of glucose is:
C6H12O6 + 6 O2 6 CO2 + 6 H2O
Turn over ►
IB/M/Jun25/7402/2
, 4
Do not
write
outside the
box
Six carbon dioxide molecules are produced from each glucose molecule.
Use your knowledge of the link reaction and Krebs cycle to explain why.
[2 marks]
*02*
IB/M/Jun25/7402/2
BIOLOGY ACTUAL 2025 PAPER MERGED
WITH MARK SCHEME
Paper 2
Please write clearly in block capitals.
Candidate number
Centre number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 2
For Examiner’s Use
Friday 13 June 2025 Morning Time allowed: 2
Question Mark
hours
1
Materials 2
For this paper you must have:
3
• a ruler with millimetre measurements • a scientific calculator.
4
Instructions
5
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page. 6
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write outside 7
the box around each page or on blank pages.
8
9
10
TOTAL
, 2
Do not
write
outside the
box
• If you need extra space for your answer(s), use the lined pages at the end of this book. Write the
question number against your answer(s).
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 91.
*jun257402201* 7402/2
IB/M/Jun25/G4007/V5
Answer all questions in the spaces provided.
IB/M/Jun25/7402/2
, 3
Do not write outside the
. box
0 1 .1 In the following passage, the numbered spaces can be filled with biological terms.
Glycolysis is the first stage of respiration. It occurs in the (1) of cells and is
an anaerobic process. Glycolysis involves the (2) of glucose to glucose
phosphate, using ATP. The oxidation of triose phosphate to (3) results in
the net gain of ATP and reduced (4) .
Write the correct biological term beside each number below that matches the
space in the passage.
[2 marks]
0 1
1
2
3
4
.2 The equation for the aerobic respiration of glucose is:
C6H12O6 + 6 O2 6 CO2 + 6 H2O
Turn over ►
IB/M/Jun25/7402/2
, 4
Do not
write
outside the
box
Six carbon dioxide molecules are produced from each glucose molecule.
Use your knowledge of the link reaction and Krebs cycle to explain why.
[2 marks]
*02*
IB/M/Jun25/7402/2
