PP2
AQA
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
Thursday 25 May 2023 Morning Time allowed: 1
hour 30 minutes
Materials
AS For this paper you must have:
a ruler with millimetre measurements
For Examiner’s Use
LEVEL
Questio Mark
a scientific calculator. n
1
BIOLOGY Instructions
Use black ink or black ball-point pen.
2
3
Paper 2 Fill in the boxes at the top of this page.
Answer all questions. 4
MAY 2023 You must answer the questions in 5
the spaces provided. Do not write outside the box around
6
each page or on blank pages.
7
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). 8
Show all your working. 9
Do all rough work in this book. Cross through any work you do
10
not want to be marked.
TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 75.
, Answer all questions in the spaces box
provided.
0 1 .1 Which statement about the function of ribosomes is
correct?
Tick () one box. [1 mark]
Site of transcription, catalyse the joining of amino acids by
hydrolysis reactions
Site of transcription, catalyse the joining of
nucleotides by condensation reactions
Site of translation, catalyse the joining of amino
acids by condensation reactions
Site of translation, catalyse the joining of nucleotides by
hydrolysis reactions
0 1
.2 Name two biological molecules that can be coded for by
a gene. Do not include a polypeptide or protein in your
answer.
[1 mark]
1
2
,0 1 .3 Scientists investigated the structure of the endoplasmic reticulum. box
Table 1 shows some of the scientists’ results.
Table 1
Percentage of endoplasmic
Type of endoplasmic reticulum
reticulum made of phospholipids
Rough 46.
8
Smooth 52.
5
Use the data in Table 1 to suggest how the structure of rough endoplasmic
reticulum is different from the structure of smooth endoplasmic reticulum
and how this is related to their functions.
[3 marks]
5
Turn over for the next question
Turn over ►
, 0 2 .1 Figure 1 shows an ATP synthase enzyme in the inner mitochondrial box
membrane.
Figure 1
Complete the passage with the appropriate terms.
[2 marks]
ATP synthase comprises several polypeptides, so is said to have
a structure.
It catalyses the synthesis of an ATP molecule by a
reaction; this involves the of a water molecule.
The ATP synthase in Figure 1 is in a mitochondrion so would catalyse
reactions
during .
AQA
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
Thursday 25 May 2023 Morning Time allowed: 1
hour 30 minutes
Materials
AS For this paper you must have:
a ruler with millimetre measurements
For Examiner’s Use
LEVEL
Questio Mark
a scientific calculator. n
1
BIOLOGY Instructions
Use black ink or black ball-point pen.
2
3
Paper 2 Fill in the boxes at the top of this page.
Answer all questions. 4
MAY 2023 You must answer the questions in 5
the spaces provided. Do not write outside the box around
6
each page or on blank pages.
7
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). 8
Show all your working. 9
Do all rough work in this book. Cross through any work you do
10
not want to be marked.
TOTAL
Information
The marks for the questions are shown in brackets.
The maximum mark for this paper is 75.
, Answer all questions in the spaces box
provided.
0 1 .1 Which statement about the function of ribosomes is
correct?
Tick () one box. [1 mark]
Site of transcription, catalyse the joining of amino acids by
hydrolysis reactions
Site of transcription, catalyse the joining of
nucleotides by condensation reactions
Site of translation, catalyse the joining of amino
acids by condensation reactions
Site of translation, catalyse the joining of nucleotides by
hydrolysis reactions
0 1
.2 Name two biological molecules that can be coded for by
a gene. Do not include a polypeptide or protein in your
answer.
[1 mark]
1
2
,0 1 .3 Scientists investigated the structure of the endoplasmic reticulum. box
Table 1 shows some of the scientists’ results.
Table 1
Percentage of endoplasmic
Type of endoplasmic reticulum
reticulum made of phospholipids
Rough 46.
8
Smooth 52.
5
Use the data in Table 1 to suggest how the structure of rough endoplasmic
reticulum is different from the structure of smooth endoplasmic reticulum
and how this is related to their functions.
[3 marks]
5
Turn over for the next question
Turn over ►
, 0 2 .1 Figure 1 shows an ATP synthase enzyme in the inner mitochondrial box
membrane.
Figure 1
Complete the passage with the appropriate terms.
[2 marks]
ATP synthase comprises several polypeptides, so is said to have
a structure.
It catalyses the synthesis of an ATP molecule by a
reaction; this involves the of a water molecule.
The ATP synthase in Figure 1 is in a mitochondrion so would catalyse
reactions
during .
