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Grade 6 Science · Cells and Cell Structure

Grade 6 Cells and Cell Structure Practice Test

Build Grade 6 Science skills with five 10-question practice tests on cell theory, organelles, plant and animal cells, prokaryotic and eukaryotic cells, microscopy, and levels of organization.

Cells and Cell Structure Practice Tests

These Grade 6 Science practice tests help students understand cell theory, cell membranes, cytoplasm, nuclei, mitochondria, ribosomes, chloroplasts, vacuoles, cell walls, and other organelles. Students also compare plant, animal, prokaryotic, and eukaryotic cells and practice interpreting microscope observations.

Skills covered

  • Explaining the main ideas of cell theory
  • Connecting organelle structures with their functions
  • Comparing plant and animal cells
  • Distinguishing prokaryotic and eukaryotic cells
  • Understanding unicellular and multicellular organization
  • Using microscopes and interpreting cell observations

How to use these practice tests

Review the function of each organelle before beginning. When answering, focus on the defining feature in the question, compare the structures named in the choices, and connect cell parts to the jobs they perform. For observation questions, use evidence from the sample or microscope description.

For more Grade 6 Science practice, return to the Grade 6 Science category.

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Grade 6 Cells and Cell Structure Practice Tests

A 10-question Grade 6 Science practice test on cell theory, organelles, plant and animal cells, prokaryotic and eukaryotic cells, microscopy, and levels of organization.

Identify cell structures, connect each organelle to its function, compare cell types, and use evidence from observations to answer each question.

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

Which organelle is often called the powerhouse of the cell?

Please select an answer first.

Correct answer: A

The correct answer is The mitochondrion.

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: Mitochondria release usable energy from food for cell activities.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Mitochondria release usable energy from food for cell activities.

2. QuestionMultiple choice

What is the function of ribosomes?

Please select an answer first.

Correct answer: B

The correct answer is They help build proteins..

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: Ribosomes assemble proteins from smaller building blocks.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Ribosomes assemble proteins from smaller building blocks.

3. QuestionMultiple choice

Which organelle captures light energy in plant cells?

Please select an answer first.

Correct answer: C

The correct answer is The chloroplast.

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: Chloroplasts contain structures that capture light energy for photosynthesis.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Chloroplasts contain structures that capture light energy for photosynthesis.

4. QuestionMultiple choice

What is a major function of a plant cell wall?

Please select an answer first.

Correct answer: D

The correct answer is It provides support and helps maintain the cell shape..

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: The cell wall is a rigid outer layer that supports and protects plant cells.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The cell wall is a rigid outer layer that supports and protects plant cells.

5. QuestionMultiple choice

What is the main function of a large central vacuole in a plant cell?

Please select an answer first.

Correct answer: A

The correct answer is It stores water and other materials and helps support the cell..

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: The central vacuole stores materials and water pressure helps the plant cell remain firm.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The central vacuole stores materials and water pressure helps the plant cell remain firm.

6. QuestionMultiple choice

Which organelle contains instructions for many cell activities?

Please select an answer first.

Correct answer: B

The correct answer is The nucleus.

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: The nucleus contains genetic instructions that help direct cell activities.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The nucleus contains genetic instructions that help direct cell activities.

7. QuestionMultiple choice

Which structure is found in both plant and animal cells?

Please select an answer first.

Correct answer: C

The correct answer is The cell membrane.

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: Both plant and animal cells have cell membranes that regulate material movement.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Both plant and animal cells have cell membranes that regulate material movement.

8. QuestionMultiple choice

Which organelle helps transport materials through the cell?

Please select an answer first.

Correct answer: D

The correct answer is The endoplasmic reticulum.

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: The endoplasmic reticulum forms a network that helps move and process materials.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The endoplasmic reticulum forms a network that helps move and process materials.

9. QuestionMultiple choice

What is one function of the Golgi apparatus?

Please select an answer first.

Correct answer: A

The correct answer is It modifies, sorts, and packages certain cell materials..

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: The Golgi apparatus prepares materials for transport to other parts of the cell or outside it.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The Golgi apparatus prepares materials for transport to other parts of the cell or outside it.

10. QuestionMultiple choice

How do organelles help a cell survive?

Please select an answer first.

Correct answer: B

The correct answer is They divide important jobs among specialized structures..

  1. Identify the cell concept: Determine whether the question asks about cell theory, an organelle, cell type, or a level of organization.
  2. Connect structure and function: Specialized organelles allow different cell processes to happen efficiently.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Specialized organelles allow different cell processes to happen efficiently.

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Frequently asked questions about Grade 6 Cells and Cell Structure

What topics are covered?

The page covers cell theory, organelles, cell membranes, plant and animal cells, prokaryotic and eukaryotic cells, microscopy, cell observations, and levels of organization.

What is the best way to study cell structure?

Study each organelle by matching its structure to its function, then compare which structures are shared by plant, animal, prokaryotic, and eukaryotic cells.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 6 Cells and Cell Structure questions in total.