NumicornNumicornLearn, solve, progress

Advanced Biology Practice Tests

These Grade 12 Science practice tests develop Advanced Biology skills through questions on cells, molecules, genetics, evolution, ecology, physiology, and experimental design.

Skills covered

  • Explaining ATP, enzymes, membranes, osmosis, organelles, gene expression, cell-cycle regulation, and homeostasis
  • Analyzing inheritance, DNA replication, mutation, PCR, gel electrophoresis, gene editing, epigenetics, and pedigrees
  • Applying natural selection, genetic drift, speciation, common ancestry, population models, energy flow, cycles, symbiosis, and biodiversity
  • Connecting nervous, endocrine, immune, renal, respiratory, circulatory, and muscular systems to physiological regulation
  • Evaluating controls, variables, replication, statistics, correlation, sample size, graphs, ethics, limitations, and conclusions

How to use these practice tests

Identify the biological process, then connect the structure, mechanism, and outcome. For data questions, distinguish what the evidence supports from claims that require additional experiments.

For more Grade 12 Science practice, return to the Grade 12 Science category.

Select a test

5 Tests
1. Test2. Test3. Test4. Test5. Test

5. Test

Grade 12 Advanced Biology Practice Tests

Practice Grade 12 Science questions about cell biology, molecular biology, genetics, evolution, ecology, physiology, and experimental design.

Choose the best answer. Apply the biological principle, connect structure to function, and interpret evidence without extending conclusions beyond the data.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is a control group in an experiment?

Please select an answer first.

Correct answer: A

The correct answer is A comparison group that does not receive the treatment being tested.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: A control provides a baseline for evaluating whether the treatment is associated with a difference.
  3. Connect structure and function: The correct answer is A comparison group that does not receive the treatment being tested.

A control provides a baseline for evaluating whether the treatment is associated with a difference.

2. QuestionMultiple choice

What is the independent variable?

Please select an answer first.

Correct answer: B

The correct answer is The factor deliberately changed or assigned by the researcher.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: The independent variable is manipulated or selected to test its effect on the dependent variable.
  3. Connect structure and function: The correct answer is The factor deliberately changed or assigned by the researcher.

The independent variable is manipulated or selected to test its effect on the dependent variable.

3. QuestionMultiple choice

What is the dependent variable?

Please select an answer first.

Correct answer: C

The correct answer is The outcome measured in response to the independent variable.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: The dependent variable is the result the researcher records and analyzes.
  3. Connect structure and function: The correct answer is The outcome measured in response to the independent variable.

The dependent variable is the result the researcher records and analyzes.

4. QuestionMultiple choice

Why are biological experiments replicated?

Please select an answer first.

Correct answer: D

The correct answer is Replication helps determine whether a result is consistent rather than an accidental outcome.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: Repeated trials or samples improve reliability and help reveal natural variation and experimental error.
  3. Connect structure and function: The correct answer is Replication helps determine whether a result is consistent rather than an accidental outcome.

Repeated trials or samples improve reliability and help reveal natural variation and experimental error.

5. QuestionMultiple choice

What does a small p-value commonly suggest in a statistical test?

Please select an answer first.

Correct answer: A

The correct answer is The observed result would be relatively unlikely if the null hypothesis were true.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: A small p-value provides evidence against the null under the selected statistical model, but it does not by itself establish practical importance.
  3. Connect structure and function: The correct answer is The observed result would be relatively unlikely if the null hypothesis were true.

A small p-value provides evidence against the null under the selected statistical model, but it does not by itself establish practical importance.

6. QuestionMultiple choice

Why does correlation not necessarily establish causation?

Please select an answer first.

Correct answer: B

The correct answer is Two variables may be associated because of another factor or because of coincidence.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: A causal claim requires more evidence about mechanism, design, timing, and alternative explanations.
  3. Connect structure and function: The correct answer is Two variables may be associated because of another factor or because of coincidence.

A causal claim requires more evidence about mechanism, design, timing, and alternative explanations.

7. QuestionMultiple choice

How can increasing sample size improve a study?

Please select an answer first.

Correct answer: C

The correct answer is It can make estimates more precise and reduce the influence of random sampling variation.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: Larger samples often improve precision, although they do not automatically correct systematic bias or poor design.
  3. Connect structure and function: The correct answer is It can make estimates more precise and reduce the influence of random sampling variation.

Larger samples often improve precision, although they do not automatically correct systematic bias or poor design.

8. QuestionMultiple choice

Which graph is usually best for showing how a measured variable changes over time?

Please select an answer first.

Correct answer: D

The correct answer is A line graph.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: A line graph displays ordered time points and makes trends, increases, decreases, and plateaus visible.
  3. Connect structure and function: The correct answer is A line graph.

A line graph displays ordered time points and makes trends, increases, decreases, and plateaus visible.

9. QuestionMultiple choice

Why are ethical rules important in biological research involving humans?

Please select an answer first.

Correct answer: A

The correct answer is They protect participants’ rights, safety, privacy, and informed choice.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: Ethical research requires respect for participants and responsible management of risks, benefits, and information.
  3. Connect structure and function: The correct answer is They protect participants’ rights, safety, privacy, and informed choice.

Ethical research requires respect for participants and responsible management of risks, benefits, and information.

10. QuestionMultiple choice

What makes a scientific conclusion appropriate?

Please select an answer first.

Correct answer: B

The correct answer is It matches the evidence, acknowledges limitations, and avoids claims broader than the design supports.

  1. Identify the biology concept: Determine whether the question concerns cells, molecules, genetics, evolution, ecology, physiology, or experimental design.
  2. Apply the biological principle: Scientific conclusions should be proportional to the data and transparent about uncertainty and alternative explanations.
  3. Connect structure and function: The correct answer is It matches the evidence, acknowledges limitations, and avoids claims broader than the design supports.

Scientific conclusions should be proportional to the data and transparent about uncertainty and alternative explanations.

Previous testNext test