1
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Time: 1 hour 30 minutes Paper
reference 8BI0/01
Biology B
Advanced Subsidiary 2025 Predicted Paper
PAPER 1: Core Cellular Biology and Microbiology
You must have: Total Marks
Scientific calculator, HB pencil, ruler
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 80.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• Instructure
question(s) marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related or
follow on from each other where appropriate.
Advice
•• Read each question carefully before you start to answer it.
Try to answer every question.
• Check your answers if you have time at the end.
, 2
1 (a) Which of the following organelles contains hydrolytic enzymes and is involved in breaking
down cellular waste? (1)
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Mitochondrion
(b) Define osmosis and explain its importance in plant cells. (2)
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(c) A scientist places red blood cells in solutions of different solute concentrations. Predict and explain
what happens to the cells in: (4)
(i) A hypertonic solution
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(ii) A hypotonic solution
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(Total for Question 1 = 7 marks)
Edexcel AS Biology Question Paper 1B 2025 Predicted
, 3
2. (a) Which of the following is the role of the smooth endoplasmic reticulum? (1)
A. Protein synthesis
B. Lipid synthesis
C. ATP production
D. DNA replication
(b) Describe the process of transcription in eukaryotic cells. (2)
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(c) Explain how tRNA contributes to the process of translation. (2)
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
Edexcel AS Biology Question Paper 1B 2025 Predicted
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Time: 1 hour 30 minutes Paper
reference 8BI0/01
Biology B
Advanced Subsidiary 2025 Predicted Paper
PAPER 1: Core Cellular Biology and Microbiology
You must have: Total Marks
Scientific calculator, HB pencil, ruler
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 80.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• Instructure
question(s) marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related or
follow on from each other where appropriate.
Advice
•• Read each question carefully before you start to answer it.
Try to answer every question.
• Check your answers if you have time at the end.
, 2
1 (a) Which of the following organelles contains hydrolytic enzymes and is involved in breaking
down cellular waste? (1)
A. Ribosome
B. Lysosome
C. Golgi apparatus
D. Mitochondrion
(b) Define osmosis and explain its importance in plant cells. (2)
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(c) A scientist places red blood cells in solutions of different solute concentrations. Predict and explain
what happens to the cells in: (4)
(i) A hypertonic solution
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(ii) A hypotonic solution
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(Total for Question 1 = 7 marks)
Edexcel AS Biology Question Paper 1B 2025 Predicted
, 3
2. (a) Which of the following is the role of the smooth endoplasmic reticulum? (1)
A. Protein synthesis
B. Lipid synthesis
C. ATP production
D. DNA replication
(b) Describe the process of transcription in eukaryotic cells. (2)
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
(c) Explain how tRNA contributes to the process of translation. (2)
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
……………………………………………………………………………………………………………
Edexcel AS Biology Question Paper 1B 2025 Predicted
