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Biology: Advanced Topics Practice Tests

These Grade 11 Science practice tests examine cell biology, enzymes, cell division, molecular genetics, evolution, physiology, homeostasis, ecology, biodiversity, and experimental analysis.

Skills covered

  • Connecting cell structures, membranes, enzymes, osmosis, mitosis, and cell-cycle regulation to function
  • Explaining DNA replication, transcription, translation, mutations, gene regulation, and inheritance evidence
  • Applying natural selection, genetic drift, gene flow, Hardy-Weinberg ideas, speciation, and phylogenetic reasoning
  • Analyzing homeostasis, feedback, immunity, circulation, respiration, nervous systems, and endocrine regulation
  • Interpreting energy flow, population limits, biodiversity, biomagnification, controls, uncertainty, and biological data

How to use these practice tests

Identify the biological scale first, from molecule and cell to organism, population, or ecosystem. Then connect the evidence to the relevant mechanism and distinguish correlation from a supported causal explanation.

For more Grade 11 Science practice, return to the Grade 11 Science category.

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Grade 11 Biology Advanced Topics Practice Tests

Practice Grade 11 Science questions about cell biology, molecular genetics, evolution, physiology, ecology, homeostasis, and biological data analysis.

Choose the best answer. Identify the biological scale, connect structure to function, use evidence, and distinguish observations from supported conclusions.

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

What is natural selection?

Please select an answer first.

Correct answer: A

The correct answer is Differential survival and reproduction of individuals with heritable trait differences.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: Natural selection changes trait frequencies because heritable variations affect reproductive success in a particular environment.
  3. Check evidence and scale: The correct answer is Differential survival and reproduction of individuals with heritable trait differences.

Natural selection changes trait frequencies because heritable variations affect reproductive success in a particular environment.

2. QuestionMultiple choice

What is an adaptation?

Please select an answer first.

Correct answer: B

The correct answer is An inherited characteristic that improves fitness in a particular environment.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: An adaptation is a heritable feature shaped by selection and evaluated relative to environmental conditions.
  3. Check evidence and scale: The correct answer is An inherited characteristic that improves fitness in a particular environment.

An adaptation is a heritable feature shaped by selection and evaluated relative to environmental conditions.

3. QuestionMultiple choice

What is genetic drift?

Please select an answer first.

Correct answer: C

The correct answer is A random change in allele frequencies, especially in small populations.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: Sampling chance can change allele frequencies independently of whether an allele improves fitness.
  3. Check evidence and scale: The correct answer is A random change in allele frequencies, especially in small populations.

Sampling chance can change allele frequencies independently of whether an allele improves fitness.

4. QuestionMultiple choice

What is gene flow?

Please select an answer first.

Correct answer: D

The correct answer is Movement of alleles between populations through migration and reproduction.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: When individuals or gametes move between populations and reproduce, alleles can enter or leave the gene pool.
  3. Check evidence and scale: The correct answer is Movement of alleles between populations through migration and reproduction.

When individuals or gametes move between populations and reproduce, alleles can enter or leave the gene pool.

5. QuestionMultiple choice

What does the Hardy-Weinberg equation p+q=1p+q=1 represent?

Please select an answer first.

Correct answer: A

The correct answer is The frequencies of two alleles at a gene locus.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: For a two-allele locus, p and q are allele frequencies and together equal one.
  3. Check evidence and scale: The correct answer is The frequencies of two alleles at a gene locus.

For a two-allele locus, p and q are allele frequencies and together equal one.

6. QuestionMultiple choice

Under Hardy-Weinberg conditions, what does 2pq2pq represent?

Please select an answer first.

Correct answer: B

The correct answer is The expected frequency of heterozygous individuals.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: In (p^2+2pq+q^2=1), (2pq) is the expected heterozygote frequency.
  3. Check evidence and scale: The correct answer is The expected frequency of heterozygous individuals.

In (p^2+2pq+q^2=1), (2pq) is the expected heterozygote frequency.

7. QuestionMultiple choice

What is reproductive isolation?

Please select an answer first.

Correct answer: C

The correct answer is A barrier that prevents populations from exchanging genes successfully.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: Prezygotic or postzygotic barriers reduce gene exchange and can allow populations to diverge.
  3. Check evidence and scale: The correct answer is A barrier that prevents populations from exchanging genes successfully.

Prezygotic or postzygotic barriers reduce gene exchange and can allow populations to diverge.

8. QuestionMultiple choice

What is speciation?

Please select an answer first.

Correct answer: D

The correct answer is The formation of new species through divergence and reproductive isolation.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: When populations diverge and can no longer exchange genes successfully, a new species lineage may form.
  3. Check evidence and scale: The correct answer is The formation of new species through divergence and reproductive isolation.

When populations diverge and can no longer exchange genes successfully, a new species lineage may form.

9. QuestionMultiple choice

What is homologous structure evidence of?

Please select an answer first.

Correct answer: A

The correct answer is Shared ancestry, even when the structures have different current functions.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: Homologous structures share developmental or anatomical patterns inherited from a common ancestor.
  3. Check evidence and scale: The correct answer is Shared ancestry, even when the structures have different current functions.

Homologous structures share developmental or anatomical patterns inherited from a common ancestor.

10. QuestionMultiple choice

What does a phylogenetic tree show?

Please select an answer first.

Correct answer: B

The correct answer is Hypotheses about evolutionary relationships and common ancestry.

  1. Identify the biological system: Determine the cell process, inheritance pattern, physiological system, population, or ecosystem being described.
  2. Apply the biological principle: Branching patterns represent inferred relationships and shared ancestors based on comparative evidence.
  3. Check evidence and scale: The correct answer is Hypotheses about evolutionary relationships and common ancestry.

Branching patterns represent inferred relationships and shared ancestors based on comparative evidence.

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