Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
AS
BIOLOGY
Paper 1
Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Questio Mark
a scientific calculator. n
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 6
pages. 7
If you need extra space for your answer(s), use the lined pages at the end of
8
this book. Write the question number against your answer(s).
Show all your working. 9
Do all rough work in this book. Cross through any work you do TOTAL
not want to be marked.
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 75.
*JUN227401101*
IB/M/Jun22/
E9
7401/1
,academicmaster
2
academicmaster
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 .1 Figure 1 shows the structure of some biological molecules.
Figure 1
*02
IB/M/
* Jun22/7401/1
, 3
Do not write
outside the
Complete Table 1 by writing the correct letter, A, B, C, D or E, in the box box
next to each statement. Each letter may be used once, more than once,
or not at all.
[4 marks]
Table 1
Letter Statement
is hydrolysed in the ileum and a product of this hydrolysis is
found in micelles
is formed by a condensation reaction between two α-
glucose molecules
is formed by the action of DNA polymerase
gives a positive result in an emulsion test
0 1 .2 Describe the mechanism for the absorption of amino acids in the ileum.
[4 marks]
8
Turn over for the next question
Turn over ►
*03
IB/M/
* Jun22/7401/1
, 4
Do not write
outside the
box
0 2 .1 Give the two types of molecule from which a ribosome is made.
[2 marks]
1
2
0 2 .2 Complete Table 2 to give four structural differences between a DNA
molecule and an mRNA molecule.
[4 marks]
Table 2
DNA structure mRNA structure
1
2
3
4
6
*04
IB/M/
* Jun22/7401/1
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
AS
BIOLOGY
Paper 1
Time allowed: 1 hour 30 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler with millimetre measurements Questio Mark
a scientific calculator. n
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 6
pages. 7
If you need extra space for your answer(s), use the lined pages at the end of
8
this book. Write the question number against your answer(s).
Show all your working. 9
Do all rough work in this book. Cross through any work you do TOTAL
not want to be marked.
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 75.
*JUN227401101*
IB/M/Jun22/
E9
7401/1
,academicmaster
2
academicmaster
Do not write
outside the
Answer all questions in the spaces box
provided.
0 1 .1 Figure 1 shows the structure of some biological molecules.
Figure 1
*02
IB/M/
* Jun22/7401/1
, 3
Do not write
outside the
Complete Table 1 by writing the correct letter, A, B, C, D or E, in the box box
next to each statement. Each letter may be used once, more than once,
or not at all.
[4 marks]
Table 1
Letter Statement
is hydrolysed in the ileum and a product of this hydrolysis is
found in micelles
is formed by a condensation reaction between two α-
glucose molecules
is formed by the action of DNA polymerase
gives a positive result in an emulsion test
0 1 .2 Describe the mechanism for the absorption of amino acids in the ileum.
[4 marks]
8
Turn over for the next question
Turn over ►
*03
IB/M/
* Jun22/7401/1
, 4
Do not write
outside the
box
0 2 .1 Give the two types of molecule from which a ribosome is made.
[2 marks]
1
2
0 2 .2 Complete Table 2 to give four structural differences between a DNA
molecule and an mRNA molecule.
[4 marks]
Table 2
DNA structure mRNA structure
1
2
3
4
6
*04
IB/M/
* Jun22/7401/1
