Introduction To Cells

What are all living things made of?

• Cells

• Molecules

• Atoms

• Bricks

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What is the smallest unit that can be said to be alive?

• Organism

• Molecule

• Cell

• Atom

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How many cells is a human made up of?

• More than 30 thousand

• More than 30 million

• More than 30 trillion

• More than 30 billion

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What type of organisms are made of just one cell?

• Unicellular organisms

• Complex organisms

• Nonliving things

• Multicellular organisms

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Which of the following is NOT an example of a unicellular organism?

• Yeasts

• Humans

• Paramecia

• Bacteria

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What can new cells only be produced by?

• Sunlight

• Water

• Nonliving matter

• Existing cells

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What do new cells help an organism do?

• Grow and replace old cells

• Become nonliving

• Produce sunlight

• Stay the same size

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Why are most cells not visible to the unaided eye?

• Because they are transparent

• Because they are too small

• Because they are colorless

• Because they are too fast

What technology is used to observe most cells?

• Binoculars

• Magnifying glass

• Microscope

• Telescope

Which microscope can be used to view living specimens?

• Scanning tunneling microscope

• Electron microscope

• Light microscope

• Atomic force microscope