Lesson 1.2 - Microbiome

Poll

Select all the statements that are true.

• Cells come in different sizes and shapes.

• All organisms are made of many cells.

• Some organisms are made of just one cell.

• All cells are the same size and shape.

• Most cells are too small to see with the naked eye.

Open Ended

What else do you know about cells? Record your ideas or any questions you have about cells below.

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Open Ended

What surprised you about the scale of cells?

Multiple Select

Which two cards in our display show images of cells?

• water molecule

• human blood cells

• human skin cells

• ant

Open Ended

What do you observe about the size of these cells?

​Launch the Scale Tool to help you gather evidence about the objects on the new Scale Cards in Set #2.

• Ringworm fungus

• C. difficile bacteria

• Human liver cell

You won’t find these items in the Scale Tool, but you can use the measurements on the Scale Cards: Set #2 and the measurements of other objects in the Scale Tool to help you place these items in the Scale Card Sort!

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Multiple Choice

How does making a Scale Model help us to understand more about microorganisms?

• We can’t see microorganisms with the naked eye, so it helps us to observe and compare them.

• It makes them get bigger

• It makes them get smaller

Multiple Choice

Are all the microorganisms you drew the same size?

• Yes, they are all the same size.

• No, some are bigger than others.

Multiple Select

Select all the statements that are true.

• Cells come in different sizes and shapes.

• All organisms are made of many cells.

• Some organisms are made of just one cell.

• All cells are the same size and shape.

• Most cells are too small to see with the naked eye.

Open Ended

Did any of your answers change from your Warm-Up response? If so, why? Record your changes and your explanations below.

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Draw

Comparing Objects of Different Scales

Today, you learned the following:

• Living things are made of cells.

• Cells are very small—in fact, almost all cells are microscopic.

• Some living things are made of just one cell.

Think about how the scale of cells compares to the scale of other objects. Launch the Scale Tool and complete the table below by finding examples of objects at each scale that is listed. Some parts of the table have been completed for you.

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Open Ended

1. What is one new thing you learned about cells from this article?

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What are organelles and why are they important?

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How are cells, tissues, organs, and systems related?