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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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1. Test

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

What is the basic unit of life?

Please select an answer first.

Correct answer: A

The correct answer is 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: Cells are the smallest units that carry out the functions needed for life.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Cells are the smallest units that carry out the functions needed for life.

2. QuestionMultiple choice

Which statement is part of cell theory?

Please select an answer first.

Correct answer: B

The correct answer is All living things are made of one or more cells..

  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: Cell theory states that all living things are composed of cells.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Cell theory states that all living things are composed of cells.

3. QuestionMultiple choice

What does the cell membrane do?

Please select an answer first.

Correct answer: C

The correct answer is It controls what enters and leaves 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 cell membrane is a selective boundary that regulates movement of materials.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The cell membrane is a selective boundary that regulates movement of materials.

4. QuestionMultiple choice

Which structure contains the genetic material in a typical eukaryotic cell?

Please select an answer first.

Correct answer: D

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 stores and protects most of the genetic material in a eukaryotic cell.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The nucleus stores and protects most of the genetic material in a eukaryotic cell.

5. QuestionMultiple choice

What is cytoplasm?

Please select an answer first.

Correct answer: A

The correct answer is The jellylike material inside the cell where many cell activities occur.

  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: Cytoplasm fills the cell and surrounds the organelles.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Cytoplasm fills the cell and surrounds the organelles.

6. QuestionMultiple choice

Which statement best describes an organelle?

Please select an answer first.

Correct answer: B

The correct answer is A specialized structure inside a cell that performs a specific function.

  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: Organelles carry out particular jobs that help the cell function.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Organelles carry out particular jobs that help the cell function.

7. QuestionMultiple choice

Why are cells usually small?

Please select an answer first.

Correct answer: C

The correct answer is Small cells have a larger surface area compared with their volume for exchanging 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: A useful surface-area-to-volume relationship helps small cells take in materials and remove waste.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

A useful surface-area-to-volume relationship helps small cells take in materials and remove waste.

8. QuestionMultiple choice

Which tool is commonly used to observe cells?

Please select an answer first.

Correct answer: D

The correct answer is A microscope.

  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: Most cells are too small to see clearly without magnification from a microscope.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Most cells are too small to see clearly without magnification from a microscope.

9. QuestionMultiple choice

Which observation supports the idea that a sample contains living cells?

Please select an answer first.

Correct answer: A

The correct answer is The sample contains repeated membrane-bound units with internal 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: Membrane-bound units with internal structures are evidence of cellular organization.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Membrane-bound units with internal structures are evidence of cellular organization.

10. QuestionMultiple choice

Why do cells need energy?

Please select an answer first.

Correct answer: B

The correct answer is They need energy to carry out processes such as growth, repair, and movement of 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: Cell activities require energy for maintenance, growth, and other life processes.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Cell activities require energy for maintenance, growth, and other life processes.

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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.