Basic Concepts of Microscopy and Biology

Who built the first microscope more than 300 years ago?

• Isaac Newton

• Albert Einstein

• Robert Hooke

• Galileo Galilei

Which of the following is NOT one of the three principles of the cell theory?

• All living things are made up of one or more cells.

• Cells are the smallest unit of life and perform different functions.

• All new cells come from cells that already exist.

• Cells can be created from non-living matter.

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What is the main function of a light microscope?

• To use a magnetic field to focus electrons.

• To use light and lenses to enlarge an image of an object.

• To produce an image of the object in three dimensions.

• To study the surface of an object.

Charlotte is looking at a drop of pond water under a microscope and notices tiny living things that are made up of only one cell. What are these organisms called?

• Multicellular organisms

• Unicellular organisms

• Cellular organisms

• Non-cellular organisms

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Which of the following is a characteristic of living things?

• Living things do not use energy

• Living things do not grow

• Living things respond to stimuli

• Living things do not reproduce

What is homeostasis?

• The ability to grow and develop

• The ability to maintain steady internal conditions

• The ability to reproduce

• The ability to use energy

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What do living things need to carry out their functions?

• Water

• Energy

• Air

• Light

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Which of the following organisms are made up of eukaryotic cells?

• Bacteria

• Fungi

• Archaea

• Viruses

What type of cells do organisms in the Bacteria and Archaea domains have?

• Eukaryotic cells

• Prokaryotic cells

• Multicellular cells

• Plant cells

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What is the main characteristic of organisms in the Archaea domain?

• They are multicellular and absorb food.

• They are simple unicellular organisms that often live in extreme environments.

• They are multicellular and make their own food.

• They are unicellular and more complex than bacteria.