Practice Paper: AQA AS Biology 7401/01
(Paper 1)
Topics 1–4 with a comprehension question
Question paper
Written by AcePapers
Independent practice paper written for revision. Not an official AQA paper and not
affiliated with or endorsed by AQA.
Time allowed: 1 hour 30 minutes Total: 75 marks
You will need
• A pen, a pencil, a ruler and a scientific calculator.
Instructions
• Answer every question, writing your answers in the lined spaces. You may not
need all of the lines.
• Show your working in calculations and give units where they are needed.
• Question 09 is a comprehension question based on a short passage.
• The mark for each part is printed in brackets. Plan your time with it.
• Organisms and data labelled fictional, invented or illustrative were made up for
this paper.
Name: ______________________________________ Date: ________________
Practice Paper 7401/01 (Paper 1) – Question paper Written by AcePapers | Page 1
, Question 01
Carbohydrates are used for energy storage and for structure.
01.1 Name the bond that forms between two α-glucose molecules when maltose is
made.
[1 mark]
01.2 Complete the table by writing a tick (✓) if the feature applies to the
polysaccharide and a cross (✗) if it does not.
[2 marks]
Feature Amylopectin Glycogen Cellulose
Contains 1,6 glycosidic bonds
Made only of β-glucose monomers
Chains are held together in microfibrils
by hydrogen bonds
01.3 Explain two ways in which the structure of glycogen makes it suited to storing
energy in animal cells.
[2 marks]
01.4 A solution gave a negative result when it was heated with Benedict’s reagent.
Describe how you would test the same solution to find out whether it contains a
non-reducing sugar.
[3 marks]
Question 01 total: 8 marks
Practice Paper 7401/01 (Paper 1) – Question paper Written by AcePapers | Page 2
, Question 02
A student investigated the effect of temperature on the activity of a protease. She
mixed the enzyme with a cloudy suspension of milk protein and recorded the time
taken for the mixture to become clear. Table 1 shows her results.
Temperature (°C) 20 30 40 50 60 70
Time taken to clear
410 205 118 96 380 did not clear in 600 s
(s)
Table 1
02.1 The rate of reaction can be calculated as 1 ÷ time taken. Calculate the rate of
reaction at 40 °C. Give your answer in s−1, in standard form and to 2 significant
figures.
[2 marks]
Answer: ______________________ s−1
02.2 Explain why the time taken to clear was much longer at 60 °C than at 50 °C.
[3 marks]
02.3 Explain why the time taken to clear at 30 °C was shorter than at 20 °C.
[2 marks]
02.4 Give one variable, other than temperature, that the student should keep
constant, and describe how she could keep it constant.
[2 marks]
Practice Paper 7401/01 (Paper 1) – Question paper Written by AcePapers | Page 3
(Paper 1)
Topics 1–4 with a comprehension question
Question paper
Written by AcePapers
Independent practice paper written for revision. Not an official AQA paper and not
affiliated with or endorsed by AQA.
Time allowed: 1 hour 30 minutes Total: 75 marks
You will need
• A pen, a pencil, a ruler and a scientific calculator.
Instructions
• Answer every question, writing your answers in the lined spaces. You may not
need all of the lines.
• Show your working in calculations and give units where they are needed.
• Question 09 is a comprehension question based on a short passage.
• The mark for each part is printed in brackets. Plan your time with it.
• Organisms and data labelled fictional, invented or illustrative were made up for
this paper.
Name: ______________________________________ Date: ________________
Practice Paper 7401/01 (Paper 1) – Question paper Written by AcePapers | Page 1
, Question 01
Carbohydrates are used for energy storage and for structure.
01.1 Name the bond that forms between two α-glucose molecules when maltose is
made.
[1 mark]
01.2 Complete the table by writing a tick (✓) if the feature applies to the
polysaccharide and a cross (✗) if it does not.
[2 marks]
Feature Amylopectin Glycogen Cellulose
Contains 1,6 glycosidic bonds
Made only of β-glucose monomers
Chains are held together in microfibrils
by hydrogen bonds
01.3 Explain two ways in which the structure of glycogen makes it suited to storing
energy in animal cells.
[2 marks]
01.4 A solution gave a negative result when it was heated with Benedict’s reagent.
Describe how you would test the same solution to find out whether it contains a
non-reducing sugar.
[3 marks]
Question 01 total: 8 marks
Practice Paper 7401/01 (Paper 1) – Question paper Written by AcePapers | Page 2
, Question 02
A student investigated the effect of temperature on the activity of a protease. She
mixed the enzyme with a cloudy suspension of milk protein and recorded the time
taken for the mixture to become clear. Table 1 shows her results.
Temperature (°C) 20 30 40 50 60 70
Time taken to clear
410 205 118 96 380 did not clear in 600 s
(s)
Table 1
02.1 The rate of reaction can be calculated as 1 ÷ time taken. Calculate the rate of
reaction at 40 °C. Give your answer in s−1, in standard form and to 2 significant
figures.
[2 marks]
Answer: ______________________ s−1
02.2 Explain why the time taken to clear was much longer at 60 °C than at 50 °C.
[3 marks]
02.3 Explain why the time taken to clear at 30 °C was shorter than at 20 °C.
[2 marks]
02.4 Give one variable, other than temperature, that the student should keep
constant, and describe how she could keep it constant.
[2 marks]
Practice Paper 7401/01 (Paper 1) – Question paper Written by AcePapers | Page 3
