Lesson Worksheet: Cells: Cell Structure Science

In this worksheet, we will practice describing the basic structure of a cell, naming parts of a plant cell, and describing their functions.


Which is more important to the cell, the nucleus or the plasma membrane?

  • AThe nucleus is more important because it controls biological processes in the cell.
  • BThey are equally important because the cell needs both to function.
  • CThe plasma membrane is more important because it controls which substances enter and leave the cell.


The stomach is an organ. What does this mean?

  • AIt can digest protein.
  • BIt is made up of tissues that have a specific function.
  • CIt is found in the human body.


When we use a microscope, we see that this sample of plant tissue has cells with a rectangular shape.

Onion epidermis under light microscope.

Pick the structure responsible for this shape.

  • ACell wall
  • BSap vacuole
  • CNucleus
  • DCell membrane


Under a microscope, we can see that this sample contains a cell wall, chloroplasts, and a nucleus.

Which of the following could the sample belong to?

  • AHuman skin
  • BSunflower leaf
  • CFungus cell


What is the name of the basic unit that makes up all living things?

  • ATissue
  • BOrganism
  • CCell
  • DOrgan system
  • EOrgan


Put these terms in the correct order from the smallest to the biggest: tissue, organ system, organ, cell.

  • AOrgan, tissue, cell, organ system
  • BOrgan system, organ, tissue, cell
  • CTissue, cell, organ, organ system
  • DCell, tissue, organ, organ system


Which part of the cell controls the biological processes of the cell?

  • AThe nucleus
  • BThe cell wall
  • CThe plasma membrane
  • DThe cytoplasm
  • EThe sap vacuole


Starting with the smallest level, put the levels of organization within an organism into the correct order.


Put the following method steps in order so that they describe how to prepare a microscope slide of onion cells.


What is the name of the green chemical found in leaves which helps to absorb sunlight?

  • ACarbon dioxide
  • BOxygen
  • CChlorophyll
  • DPhotosynthesis

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