A Level Biology A
H420/01 Biological processes
Practice paper – Set 1
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inserted)
You may use:
• a scientific 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
H42001/8.1 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 The following passage has four key terms missing:
Meristem cells in plants are used to generate new plant tissues. When
………………… tissue is formed, ………………… impregnates the cell walls, making
them impermeable to water. All cytoplasm is lost. When ………………… tissue is
formed, cytoplasm remains, but the ………………… become elongated and lose most
of their cytoplasm.
What is the correct order of missing terms?
A sclerenchyma, phloem, lignin, xylem vessels
B xylem, lignin, parenchyma, phloem vessels
C phloem, collenchyma, xylem, sieve tube elements
D xylem, lignin, phloem, sieve tube elements
Your answer
[1]
2 A student mixed an unknown substance with water and ethanol. A white suspension formed in
the tube.
Which of the explanations, A to D, is correct?
A lipid is present
B non-reducing sugar is present
C protein is present
D reducing sugar is present
Your answer
[1]
© OCR 2016 PRACTICE PAPER H420/01
, 3
3 The diagram below shows an organic molecule.
What bond is formed when the molecule is polymerised?
A ester
B glycosidic
C peptide
D phosphodiester
Your answer
[1]
© OCR 2016 PRACTICE PAPER H420/01 Turn over
, 4
4 The respiratory quotients (RQs) of three respiratory substrates are shown below:
carbohydrates: 1.0
lipids: 0.7
proteins: 0.9
An experiment was carried out to investigate which molecules are used as respiratory
substrates in different cell types. The results are shown in the table below.
Oxygen consumed Carbon dioxide produced
Cell type
(mm3 min-1) (mm3 min-1)
cancerous 12.78 12.82
normal 13.45 9.40
Which of the statements, A to D, supports these results?
A cancer cells respire mainly carbohydrates
B cancer cells respire mainly lipids
C normal cells respire mainly carbohydrates
D normal cells respire mainly proteins
Your answer
[1]
5 The following are statements about the liver:
1 stores bile in the gall bladder
2 contains sinusoids
3 receives blood from the gut and heart
Which of these statements relate to the exocrine function of the liver?
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer
[1]
© OCR 2016 PRACTICE PAPER H420/01
H420/01 Biological processes
Practice paper – Set 1
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inserted)
You may use:
• a scientific 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
H42001/8.1 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 The following passage has four key terms missing:
Meristem cells in plants are used to generate new plant tissues. When
………………… tissue is formed, ………………… impregnates the cell walls, making
them impermeable to water. All cytoplasm is lost. When ………………… tissue is
formed, cytoplasm remains, but the ………………… become elongated and lose most
of their cytoplasm.
What is the correct order of missing terms?
A sclerenchyma, phloem, lignin, xylem vessels
B xylem, lignin, parenchyma, phloem vessels
C phloem, collenchyma, xylem, sieve tube elements
D xylem, lignin, phloem, sieve tube elements
Your answer
[1]
2 A student mixed an unknown substance with water and ethanol. A white suspension formed in
the tube.
Which of the explanations, A to D, is correct?
A lipid is present
B non-reducing sugar is present
C protein is present
D reducing sugar is present
Your answer
[1]
© OCR 2016 PRACTICE PAPER H420/01
, 3
3 The diagram below shows an organic molecule.
What bond is formed when the molecule is polymerised?
A ester
B glycosidic
C peptide
D phosphodiester
Your answer
[1]
© OCR 2016 PRACTICE PAPER H420/01 Turn over
, 4
4 The respiratory quotients (RQs) of three respiratory substrates are shown below:
carbohydrates: 1.0
lipids: 0.7
proteins: 0.9
An experiment was carried out to investigate which molecules are used as respiratory
substrates in different cell types. The results are shown in the table below.
Oxygen consumed Carbon dioxide produced
Cell type
(mm3 min-1) (mm3 min-1)
cancerous 12.78 12.82
normal 13.45 9.40
Which of the statements, A to D, supports these results?
A cancer cells respire mainly carbohydrates
B cancer cells respire mainly lipids
C normal cells respire mainly carbohydrates
D normal cells respire mainly proteins
Your answer
[1]
5 The following are statements about the liver:
1 stores bile in the gall bladder
2 contains sinusoids
3 receives blood from the gut and heart
Which of these statements relate to the exocrine function of the liver?
A 1, 2 and 3
B Only 1 and 2
C Only 2 and 3
D Only 1
Your answer
[1]
© OCR 2016 PRACTICE PAPER H420/01
