Oxford Cambridge and RSA
A Level Biology A
H420/01 Biological processes
Practice paper – Set 2
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inserted)
You may use:
• a scientific or graphical calculator
• a ruler (cm/mm)
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided. If additional space is
required, use the lined page(s) at the end of this booklet. The question number(s) must
be clearly shown.
• Do not write in the barcodes.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended responses will be assessed in questions marked with an asterisk (*).
• This document consists of 32 pages.
© OCR 2016 Practice paper OCR is an exempt Charity
DC (RW/SG) 139310/4 Turn over
, 2
SECTION A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
Answer all the questions.
1 Which structure, A to D, is not an example of a surface that is specialised for the purpose of gas
exchange?
A alveolus of a mammal
B plasma membrane of a unicellular protoctista
C leaf of a tobacco plant
D trachea of an insect
Your answer [1]
2 Which of the processes, A to D, describes the formation of cellulose?
A condensation polymerisation of amino acid molecules
B condensation polymerisation of β-glucose molecules
C hydrolysis polymerisation of α-glucose molecules
D hydrolysis polymerisation of deoxyribose molecules
Your answer [1]
3 Which of the statements, A to D, shows that the genetic code is degenerate?
A CCA and CCT code for proline
B rRNA is manufactured in the nucleolus
C tRNA is not complementary to DNA
D uracil is not found in DNA
Your answer [1]
© OCR 2016 Practice paper H420/01
, 3
4 Below is a light microscope image of a transverse section of part of a plant stem.
E
F
G
H
Which row, A to D, lists the correct labels for this image?
E F G H
A xylem meristem epidermis phloem
B epidermis phloem cambium xylem
C meristem phloem xylem root hair
D xylem cambium phloem meristem
Your answer [1]
© OCR 2016 Practice paper H420/01 Turn over
, 4
5 Which of the molecules, A to D, is a pentose sugar?
CH2OH CH2OH
O OH
O
OH
OH
CH2OH
OH OH
OH OH
A B
CH2OH
O OH
CH2OH
O OH CH2OH OH
OH O O
OH
OH
OH OH
OH
C D
Your answer [1]
6 Which of the statements, A to D, correctly explains why tissue fluid forms from plasma in
capillaries?
A hydrostatic pressure > oncotic pressure
B oncotic pressure > hydrostatic pressure
C osmosis > muscle contractions
D solute potential < osmotic pressure
Your answer [1]
© OCR 2016 Practice paper H420/01
A Level Biology A
H420/01 Biological processes
Practice paper – Set 2
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inserted)
You may use:
• a scientific or graphical calculator
• a ruler (cm/mm)
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided. If additional space is
required, use the lined page(s) at the end of this booklet. The question number(s) must
be clearly shown.
• Do not write in the barcodes.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended responses will be assessed in questions marked with an asterisk (*).
• This document consists of 32 pages.
© OCR 2016 Practice paper OCR is an exempt Charity
DC (RW/SG) 139310/4 Turn over
, 2
SECTION A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
Answer all the questions.
1 Which structure, A to D, is not an example of a surface that is specialised for the purpose of gas
exchange?
A alveolus of a mammal
B plasma membrane of a unicellular protoctista
C leaf of a tobacco plant
D trachea of an insect
Your answer [1]
2 Which of the processes, A to D, describes the formation of cellulose?
A condensation polymerisation of amino acid molecules
B condensation polymerisation of β-glucose molecules
C hydrolysis polymerisation of α-glucose molecules
D hydrolysis polymerisation of deoxyribose molecules
Your answer [1]
3 Which of the statements, A to D, shows that the genetic code is degenerate?
A CCA and CCT code for proline
B rRNA is manufactured in the nucleolus
C tRNA is not complementary to DNA
D uracil is not found in DNA
Your answer [1]
© OCR 2016 Practice paper H420/01
, 3
4 Below is a light microscope image of a transverse section of part of a plant stem.
E
F
G
H
Which row, A to D, lists the correct labels for this image?
E F G H
A xylem meristem epidermis phloem
B epidermis phloem cambium xylem
C meristem phloem xylem root hair
D xylem cambium phloem meristem
Your answer [1]
© OCR 2016 Practice paper H420/01 Turn over
, 4
5 Which of the molecules, A to D, is a pentose sugar?
CH2OH CH2OH
O OH
O
OH
OH
CH2OH
OH OH
OH OH
A B
CH2OH
O OH
CH2OH
O OH CH2OH OH
OH O O
OH
OH
OH OH
OH
C D
Your answer [1]
6 Which of the statements, A to D, correctly explains why tissue fluid forms from plasma in
capillaries?
A hydrostatic pressure > oncotic pressure
B oncotic pressure > hydrostatic pressure
C osmosis > muscle contractions
D solute potential < osmotic pressure
Your answer [1]
© OCR 2016 Practice paper H420/01
