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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 sequence shows levels of organization from simplest to more complex?

Please select an answer first.

Correct answer: A

The correct answer is Cell, tissue, organ, organ system, organism.

  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 form tissues, tissues form organs, organs work in organ systems, and systems support an organism.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Cells form tissues, tissues form organs, organs work in organ systems, and systems support an organism.

2. QuestionMultiple choice

What is a tissue?

Please select an answer first.

Correct answer: B

The correct answer is A group of similar cells working together to perform a 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: Tissues are made of cells that cooperate in a shared function.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Tissues are made of cells that cooperate in a shared function.

3. QuestionMultiple choice

What is an organ?

Please select an answer first.

Correct answer: C

The correct answer is A structure made of different tissues that work together.

  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: Organs contain multiple tissue types that cooperate to perform a larger function.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Organs contain multiple tissue types that cooperate to perform a larger function.

4. QuestionMultiple choice

Which example is an organ system?

Please select an answer first.

Correct answer: D

The correct answer is The digestive system.

  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 digestive system includes organs that work together to process food.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

The digestive system includes organs that work together to process food.

5. QuestionMultiple choice

Why must cells in a multicellular organism communicate?

Please select an answer first.

Correct answer: A

The correct answer is They need to coordinate activities and maintain stable conditions..

  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 communication helps tissues and organs work together and maintain balance.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Cell communication helps tissues and organs work together and maintain balance.

6. QuestionMultiple choice

What is the main advantage of using a microscope in a cell investigation?

Please select an answer first.

Correct answer: B

The correct answer is It magnifies structures that are too small to see clearly with the unaided eye..

  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: Magnification allows scientists to observe small cell structures and patterns.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Magnification allows scientists to observe small cell structures and patterns.

7. QuestionMultiple choice

Why is a thin specimen useful when viewing cells with a light microscope?

Please select an answer first.

Correct answer: C

The correct answer is Light can pass through the specimen so its structures can be observed..

  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 thin sample allows transmitted light to reach the observer or camera.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

A thin sample allows transmitted light to reach the observer or camera.

8. QuestionMultiple choice

What is the purpose of a stain in some microscope investigations?

Please select an answer first.

Correct answer: D

The correct answer is It increases contrast so certain cell structures are easier to see..

  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: Stains can make structures stand out against the surrounding material.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Stains can make structures stand out against the surrounding material.

9. QuestionMultiple choice

Which observation is qualitative?

Please select an answer first.

Correct answer: A

The correct answer is The cells appear round and have dark centers..

  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 qualitative observation describes characteristics without using a numerical measurement.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

A qualitative observation describes characteristics without using a numerical measurement.

10. QuestionMultiple choice

Why should a student repeat observations of cells?

Please select an answer first.

Correct answer: B

The correct answer is Repeated observations can improve reliability and reveal patterns..

  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: Repeated evidence helps reduce the effect of chance or a single observation error.
  3. Check the evidence: Use the defining feature of the cell structure to confirm the answer.

Repeated evidence helps reduce the effect of chance or a single observation error.

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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.