OCR SUMMER 2026
PREDICTED PAPER
AS Level Biology B (Advancing Biology)
H022/01 Foundations of biology
Time allowed: 1 hour 30 minutes
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using acorrect method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
Turn over
for more: tyrionpapers.com
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 How do scanning electron microscopes (SEM) produce images?
A Electrons pass through the specimen onto a fluorescent screen
B Light is reflected off the specimen surface
C Electrons are reflected off the specimen surface and analysed by computer
D Heavy metals stain the specimen to absorb electrons
Your answer [1]
2 Which combination of features best explains why erythrocytes are highly efficient
at oxygen delivery?
A Large nucleus, flexible membrane, haemoglobin present
B Biconcave shape increasing surface area to volume ratio, no nucleus, haemoglobin that
binds oxygen reversibly
C Spherical shape, mitochondria for energy, haemoglobin present
D Biconcave shape, large nucleus directing haemoglobin production, rigid membrane
Your answer [1]
3 Pili are described as hair-like protein structures. Which function do they perform?
A They propel the bacterium through its environment
B They allow the bacterium to adhere to other cells or surfaces
C They carry out photosynthesis using pigments
D They regulate the entry of substances into the cell
Your answer [1]
for more: tyrionpapers.com
, 3
4 Which statement about cholesterol in the cell membrane is correct?
A Cholesterol is entirely hydrophilic and associates with the phosphate heads of phospholipids
only
B Cholesterol is entirely hydrophobic and sits within the hydrocarbon tails only
C Cholesterol has a hydrophobic region attracted to hydrocarbon tails and a hydrophilic end
attracted to phosphate heads, regulating membrane fluidity
D Cholesterol increases the lateral movement of phospholipids within the monolayer
Your answer [1]
5 Which statement correctly explains why plant cells do not burst when placed in
distilled water, unlike animal cells?
A Plant cells have a partially permeable tonoplast that prevents excess water entry
B The strong inelastic cellulose cell wall resists the pressure exerted by the protoplast,
preventing further water entry
C The central vacuole absorbs excess water preventing the cell membrane from bursting
D Plant cells have a lower water potential than animal cells so less water enters
Your answer [1]
6 Which comparison between dipeptide formation and disaccharide formation is
correct?
A Both involve hydrolysis reactions that release water molecules
B Both involve condensation reactions that remove water molecules and form covalent bonds,
but dipeptides form peptide bonds whereas disaccharides form glycosidic bonds
C Dipeptide formation involves ester bonds whereas disaccharide formation involves peptide
bonds
D Both form the same type of covalent bond as the monomers involved are chemically
identical
Your answer [1]
for more: tyrionpapers.com
PREDICTED PAPER
AS Level Biology B (Advancing Biology)
H022/01 Foundations of biology
Time allowed: 1 hour 30 minutes
You can use:
a scientific or graphical calculator
a ruler (cm/mm)
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using acorrect method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
Turn over
for more: tyrionpapers.com
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer to each question in the box provided.
1 How do scanning electron microscopes (SEM) produce images?
A Electrons pass through the specimen onto a fluorescent screen
B Light is reflected off the specimen surface
C Electrons are reflected off the specimen surface and analysed by computer
D Heavy metals stain the specimen to absorb electrons
Your answer [1]
2 Which combination of features best explains why erythrocytes are highly efficient
at oxygen delivery?
A Large nucleus, flexible membrane, haemoglobin present
B Biconcave shape increasing surface area to volume ratio, no nucleus, haemoglobin that
binds oxygen reversibly
C Spherical shape, mitochondria for energy, haemoglobin present
D Biconcave shape, large nucleus directing haemoglobin production, rigid membrane
Your answer [1]
3 Pili are described as hair-like protein structures. Which function do they perform?
A They propel the bacterium through its environment
B They allow the bacterium to adhere to other cells or surfaces
C They carry out photosynthesis using pigments
D They regulate the entry of substances into the cell
Your answer [1]
for more: tyrionpapers.com
, 3
4 Which statement about cholesterol in the cell membrane is correct?
A Cholesterol is entirely hydrophilic and associates with the phosphate heads of phospholipids
only
B Cholesterol is entirely hydrophobic and sits within the hydrocarbon tails only
C Cholesterol has a hydrophobic region attracted to hydrocarbon tails and a hydrophilic end
attracted to phosphate heads, regulating membrane fluidity
D Cholesterol increases the lateral movement of phospholipids within the monolayer
Your answer [1]
5 Which statement correctly explains why plant cells do not burst when placed in
distilled water, unlike animal cells?
A Plant cells have a partially permeable tonoplast that prevents excess water entry
B The strong inelastic cellulose cell wall resists the pressure exerted by the protoplast,
preventing further water entry
C The central vacuole absorbs excess water preventing the cell membrane from bursting
D Plant cells have a lower water potential than animal cells so less water enters
Your answer [1]
6 Which comparison between dipeptide formation and disaccharide formation is
correct?
A Both involve hydrolysis reactions that release water molecules
B Both involve condensation reactions that remove water molecules and form covalent bonds,
but dipeptides form peptide bonds whereas disaccharides form glycosidic bonds
C Dipeptide formation involves ester bonds whereas disaccharide formation involves peptide
bonds
D Both form the same type of covalent bond as the monomers involved are chemically
identical
Your answer [1]
for more: tyrionpapers.com
