chemistry
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
H
GCSE
BIOLOGY
Higher Tier Paper 2H
Time allowed: 1 hour 45 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator.
1
Instructions 2
• Use black ink or black ball-point pen. 3
• Pencil should only be used for drawing. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions in the spaces provided.
• If you need extra space for your answer(s), use the lined pages at the end of 6
this book. Write the question number against your answer(s). 7
• Do all rough work in this book. Cross through any work you do not want 8
to be marked.
• In all calculations, show clearly how you work out your answer. 9
TOTAL
Information
• The maximum mark for this paper is 100.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation
in your answers.
*Jun2184612H01*
IB/M/Jun21/E23 8461/2H
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 The nucleus of a cell contains DNA.
0 1 . 1 Name the structures inside the cell nucleus that contain DNA.
[1 mark]
Figure 1 shows part of a DNA molecule.
Figure 1
0 1 . 2 Name the part of the DNA molecule labelled X.
[1 mark]
0 1 . 3 What type of substances are labelled A, C, G and T in Figure 1?
[1 mark]
*02*
IB/M/Jun21/8461/2H
, 3
Do not write
outside the
Figure 2 shows another section of a DNA molecule. box
Figure 2
0 1 . 4 Four of the substances you named in Question 01.3 are not labelled in part Y
of Figure 2.
Label each of these substances with the correct letter, A, C, G or T.
Use information from other parts of Figure 2 to help you.
[1 mark]
0 1 . 5 What is happening to the DNA in part Z of Figure 2?
[1 mark]
Tick () one box.
Differentiation
Evolution
Fertilisation
Replication
Turn over ►
*03*
IB/M/Jun21/8461/2H
, 4
Do not write
outside the
0 1 . 6 A gene is a length of DNA. box
What type of substance does a gene code for?
[1 mark]
0 1 . 7 Most human body cells contain 6 × 10–12 grams of DNA.
What mass of DNA will a human sperm cell contain?
[1 mark]
Tick () one box.
6 × 10–6 grams
6 × 10–12 grams
3 × 10–6 grams
3 × 10–12 grams
0 1 . 8 What is the name of the type of cell division that produces sperm cells?
[1 mark]
Tick () one box.
Binary fission
Differentiation
Meiosis
Mitosis
8
*04*
IB/M/Jun21/8461/2H
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
H
GCSE
BIOLOGY
Higher Tier Paper 2H
Time allowed: 1 hour 45 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a ruler Question Mark
• a scientific calculator.
1
Instructions 2
• Use black ink or black ball-point pen. 3
• Pencil should only be used for drawing. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions in the spaces provided.
• If you need extra space for your answer(s), use the lined pages at the end of 6
this book. Write the question number against your answer(s). 7
• Do all rough work in this book. Cross through any work you do not want 8
to be marked.
• In all calculations, show clearly how you work out your answer. 9
TOTAL
Information
• The maximum mark for this paper is 100.
• The marks for questions are shown in brackets.
• You are expected to use a calculator where appropriate.
• You are reminded of the need for good English and clear presentation
in your answers.
*Jun2184612H01*
IB/M/Jun21/E23 8461/2H
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 The nucleus of a cell contains DNA.
0 1 . 1 Name the structures inside the cell nucleus that contain DNA.
[1 mark]
Figure 1 shows part of a DNA molecule.
Figure 1
0 1 . 2 Name the part of the DNA molecule labelled X.
[1 mark]
0 1 . 3 What type of substances are labelled A, C, G and T in Figure 1?
[1 mark]
*02*
IB/M/Jun21/8461/2H
, 3
Do not write
outside the
Figure 2 shows another section of a DNA molecule. box
Figure 2
0 1 . 4 Four of the substances you named in Question 01.3 are not labelled in part Y
of Figure 2.
Label each of these substances with the correct letter, A, C, G or T.
Use information from other parts of Figure 2 to help you.
[1 mark]
0 1 . 5 What is happening to the DNA in part Z of Figure 2?
[1 mark]
Tick () one box.
Differentiation
Evolution
Fertilisation
Replication
Turn over ►
*03*
IB/M/Jun21/8461/2H
, 4
Do not write
outside the
0 1 . 6 A gene is a length of DNA. box
What type of substance does a gene code for?
[1 mark]
0 1 . 7 Most human body cells contain 6 × 10–12 grams of DNA.
What mass of DNA will a human sperm cell contain?
[1 mark]
Tick () one box.
6 × 10–6 grams
6 × 10–12 grams
3 × 10–6 grams
3 × 10–12 grams
0 1 . 8 What is the name of the type of cell division that produces sperm cells?
[1 mark]
Tick () one box.
Binary fission
Differentiation
Meiosis
Mitosis
8
*04*
IB/M/Jun21/8461/2H
