Amplify - Microbiome Chapter 1

Many organisms are _____________—so small that they cannot be seen with the naked eye.

• microscopic

• gigantic

• small

• ordinary

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All living things are made of __________.

• wood

• bone

• cells

• blood

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Almost all cells are _______________.

• animal cells

• plant cells

• visible to the naked eye

• microscopic

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Even though they are both too small to see, cells are much ___________ than molecules.

• larger

• smaller

The human microbiome contains approximately 100 trillion ___________. Most of these are bacteria.

• microorganisms

• blood cells

• fungi

• C. jejuni

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A microorganism is....

• made of cells.

• visible with the human eye.

• microscopic.

• bigger than a grain of salt.

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True or False: All bacteria are harmful.

• True

• False

Living things, such as plants, animals and bacteria.

• a marble

• The rain

• a rock

• organisms

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Which one of these things is NOT microscopic?

• yeast cell

• molecule

• grain of salt

• blood cell

Cells are typically measured in:

• micrometers

• nanometers

• centimeters

• feet