Page 3: Question 1 Continued - Variables in Photosynthesis Experiment

This page continues Question 1, asking students to identify the independent variable in the photosynthesis investigation. It also provides the method used in the experiment.

Definition: Independent variable - The factor that is changed or manipulated in an experiment.

The method outlined includes:

1. Setting up the apparatus
2. Placing pondweed at different distances from the lamp
3. Recording the number of gas bubbles produced in 5 minutes

Page 4: Question 1 Continued - Experimental Design

This page focuses on experimental design and improvement. Students are asked to:

1. Explain how an increase in temperature would affect the investigation results
2. Suggest a way to prevent water temperature increase
3. Propose two improvements to increase the validity of the results

Highlight: These questions test students' understanding of variables in scientific experiments and their ability to critically analyze experimental design.

Page 6: Question 1 Continued - Data Analysis

This page presents data from the photosynthesis experiment in a table format. Students are asked to:

1. Draw a conclusion from the data
2. Calculate the rate of photosynthesis at a specific distance

Example: The table shows the number of gas bubbles produced at different distances from the lamp.

Page 9: Blank Page

This page is intentionally left blank for students to use as extra space if needed.

Page 1: Exam Information and Instructions

This page provides essential details about the AQA November 2021 Biology Paper 1 Higher past paper. It outlines the materials needed, instructions for completing the exam, and general information about the paper.

Key information includes:

• Materials required: ruler and scientific calculator
• Time allowed: 1 hour 15 minutes
• Maximum marks: 70
• Instructions on using black ink/pen and showing calculations clearly

Highlight: Students are reminded of the need for good English and clear presentation in their answers.