Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
AS
BIOLOGY
Paper 1
Monday 15 May 2024 Morning Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
• a ruler with millimetre measurements Question Mark
• a scientific calculator. 1
Instructions 2
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page. 4
• Answer all questions.
5
• You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages. 6
• If you need extra space for your answer(s), use the lined pages at the end of 7
this book. Write the question number against your answer(s). 8
• Show all your working.
9
• Do all rough work in this book. Cross through any work you do not want
to be marked. TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 75.
*JUN247401101*
IB/M/Jun24/E8 7401/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1.1 Describe the primary structure of all proteins.
[2 marks]
0 1 . 2 This question is about the genetic code.
Define universal, non-overlapping and degenerate.
[3 marks]
Universal
Non-overlapping
Degenerate
5
*02*
IB/M/Jun24/7401/1
, 3
Do not write
outside the
0 2 Figure 1 shows a transmission electron microscope (TEM) image of a Streptococcus box
bacterium.
Figure 1
0 2 . 1 Describe how the appearance of the area containing DNA in a TEM image of a
eukaryotic cell would differ from that shown in Figure 1.
[2 marks]
0 2 . 2 Describe one difference between the structure of DNA in a prokaryotic cell and in a
eukaryotic cell.
[1 mark]
Question 2 continues on the next page
Turn over ►
*03*
IB/M/Jun24/7401/1
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
AS
BIOLOGY
Paper 1
Monday 15 May 2024 Morning Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
• a ruler with millimetre measurements Question Mark
• a scientific calculator. 1
Instructions 2
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page. 4
• Answer all questions.
5
• You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages. 6
• If you need extra space for your answer(s), use the lined pages at the end of 7
this book. Write the question number against your answer(s). 8
• Show all your working.
9
• Do all rough work in this book. Cross through any work you do not want
to be marked. TOTAL
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 75.
*JUN247401101*
IB/M/Jun24/E8 7401/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1.1 Describe the primary structure of all proteins.
[2 marks]
0 1 . 2 This question is about the genetic code.
Define universal, non-overlapping and degenerate.
[3 marks]
Universal
Non-overlapping
Degenerate
5
*02*
IB/M/Jun24/7401/1
, 3
Do not write
outside the
0 2 Figure 1 shows a transmission electron microscope (TEM) image of a Streptococcus box
bacterium.
Figure 1
0 2 . 1 Describe how the appearance of the area containing DNA in a TEM image of a
eukaryotic cell would differ from that shown in Figure 1.
[2 marks]
0 2 . 2 Describe one difference between the structure of DNA in a prokaryotic cell and in a
eukaryotic cell.
[1 mark]
Question 2 continues on the next page
Turn over ►
*03*
IB/M/Jun24/7401/1
