Required Practicals

Question 1

What is the purpose of required practicals in AQA Biology Paper 2?

Answer 1

To assess practical skills and understanding of biological concepts.

Question 2

True or False: All required practicals must be conducted in a laboratory setting.

Answer 2

True

Question 3

Fill in the blank: The _______ method is commonly used to investigate enzyme activity.

Answer 3

temperature

Question 4

What is the independent variable in an experiment investigating the effect of light intensity on photosynthesis?

Answer 4

Light intensity

Question 5

List one safety precaution to take during practical experiments.

Answer 5

Wear safety goggles.

Question 6

Multiple choice: Which of the following is NOT a required practical for AQA Biology Paper 2? A) Investigating photosynthesis B) Measuring respiration rates C) Testing soil pH D) Investigating osmosis

Answer 6

C) Testing soil pH

Question 7

What equipment is typically used to measure the volume of gas produced in a respiration experiment?

Answer 7

Gas syringe

Question 8

True or False: Using a control group is essential in experimental design.

Answer 8

True

Question 9

What is the purpose of a control variable?

Answer 9

To ensure that the experiment is fair and only the independent variable is tested.

Question 10

Which practical involves the use of a potato chip to measure osmosis?

Answer 10

Investigating the effect of sucrose solution on potato chips.

Question 11

What is the dependent variable in an experiment measuring the effect of temperature on enzyme activity?

Answer 11

Rate of reaction

Question 12

Fill in the blank: The _______ scale is used to measure the pH of solutions.

Answer 12

pH

Question 13

Multiple choice: Which enzyme is commonly used in experiments on substrate concentration? A) Amylase B) Lipase C) Protease D) All of the above

Answer 13

D) All of the above

Question 14

What is one way to increase the accuracy of measurements in a practical?

Answer 14

Use calibrated equipment.

Question 15

True or False: Data collected should always be recorded in a table.

Answer 15

True

Question 16

What is the main aim of the osmosis experiment with potato chips?

Answer 16

To determine the effect of different concentrations of sucrose solution on potato mass.

Question 17

What is one method to ensure repeatability in an experiment?

Answer 17

Conduct multiple trials.

Question 18

Fill in the blank: A _______ is a factor that can be changed in an experiment.

Answer 18

variable

Question 19

Multiple choice: Which of the following factors affects the rate of photosynthesis? A) Light intensity B) Carbon dioxide concentration C) Temperature D) All of the above

Answer 19

D) All of the above

Question 20

What type of graph is best for showing the relationship between two continuous variables?

Answer 20

Scatter graph

Question 21

True or False: It is acceptable to alter data to fit a hypothesis.

Answer 21

False

Question 22

What is the main purpose of using a microscope in biology practicals?

Answer 22

To observe small specimens that cannot be seen with the naked eye.

Question 23

What type of solution is used to stain cells for microscopic examination?

Answer 23

Iodine solution

Question 24

Fill in the blank: The _______ is the part of the microscope that adjusts the amount of light.

Answer 24

diaphragm

Question 25

What is the significance of using a blank control in colorimetric assays?

Answer 25

To calibrate the instrument and ensure accurate measurements.