AS LEEVEL BIOLOGY A H020/01 BREADTH
IN BIOLOGY ACTUAL 2025 PAPER
MERGED WITH MARK SCHEME
vincent marekia
[COMPANY NAME] [Company address]
, 1
Oxford Cambridge and RSA
*1442234452*
Monday 12 May 2025 – Morning
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 a correct 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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/4261/3 ] DC (PQ/CB) 345878/5
OCR is an exempt Charity
Turn over
© OCR 2025
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer for each question in the box provided.
1 Which statement correctly describes microscopes?
A Light microscopes can produce higher resolution images than electron
microscopes.
B Scanning electron microscopes produce higher resolution images than
transmission electron microscopes.
C Transmission electron microscopes can achieve higher magnifications than
scanning electron microscopes.
D Transmission electron microscopes can be used to view living tissues.
Your answer
2 Which statement correctly describes phosphorylated nucleotides?
A ADP can be hydrolysed to produce ATP.
B ADP can be phosphorylated to produce ATP.
C All phosphorylated nucleotides have three phosphate groups.
D Energy is released when ATP undergoes a condensation reaction to form ADP
and Pi.
Your answer
3 Which type of stem cell can become specialised into more than one cell type but is
limited to a range of cell types?
A Embryonic
B Multipotent
C Pluripotent
D Totipotent
Your answer
© OCR 2025 Turn over
, 3
4 A student carries out a non-reducing sugar test on a sample of fruit juice.
What is the correct reason for heating the sample with hydrochloric acid?
A It breaks the ester bond between glucose and fructose
B It breaks the ester bond between glucose and sucrose
C It breaks the glycosidic bond between glucose and fructose
D It breaks the glycosidic bond between glucose and sucrose
Your answer
© OCR 2025
IN BIOLOGY ACTUAL 2025 PAPER
MERGED WITH MARK SCHEME
vincent marekia
[COMPANY NAME] [Company address]
, 1
Oxford Cambridge and RSA
*1442234452*
Monday 12 May 2025 – Morning
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 a correct 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 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/4261/3 ] DC (PQ/CB) 345878/5
OCR is an exempt Charity
Turn over
© OCR 2025
, 2
Section A
You should spend a maximum of 25 minutes on this section.
Write your answer for each question in the box provided.
1 Which statement correctly describes microscopes?
A Light microscopes can produce higher resolution images than electron
microscopes.
B Scanning electron microscopes produce higher resolution images than
transmission electron microscopes.
C Transmission electron microscopes can achieve higher magnifications than
scanning electron microscopes.
D Transmission electron microscopes can be used to view living tissues.
Your answer
2 Which statement correctly describes phosphorylated nucleotides?
A ADP can be hydrolysed to produce ATP.
B ADP can be phosphorylated to produce ATP.
C All phosphorylated nucleotides have three phosphate groups.
D Energy is released when ATP undergoes a condensation reaction to form ADP
and Pi.
Your answer
3 Which type of stem cell can become specialised into more than one cell type but is
limited to a range of cell types?
A Embryonic
B Multipotent
C Pluripotent
D Totipotent
Your answer
© OCR 2025 Turn over
, 3
4 A student carries out a non-reducing sugar test on a sample of fruit juice.
What is the correct reason for heating the sample with hydrochloric acid?
A It breaks the ester bond between glucose and fructose
B It breaks the ester bond between glucose and sucrose
C It breaks the glycosidic bond between glucose and fructose
D It breaks the glycosidic bond between glucose and sucrose
Your answer
© OCR 2025
