Unit 12: Microbiology

What is the basic unit of structure and function in all living organisms?

• Cell

• Atom

• Molecule

• Organ

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What type of organism can produce its own food using light or chemical energy?

• Prokaryotic

• Multicellular

• Heterotrophic

• Autotrophic

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Which term is used to describe a well-substantiated explanation of some aspect of the natural world?

• Scientific law

• Scientific hypothesis

• Scientific fact

• Scientific theory

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Which invention from the 17th century allowed for the development of modern cell theory?

• x-rays

• computers

• the light microscope

• the scanning electron microscope

A scientific theory explains how or why things happen in nature.

• True

• False

All organisms are made of:

• organelles
• cytoplasm
• DNA
• cells

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The Cell Theory states...

• atoms create all matter
• living things evolve
• the cell is the backbone of all matter
• cells are the basic unit of structure and organization of organisms

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Which is an example of a single-celled organism?

• A. amoeba

• B. insect

• C. fish

• D. worm

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In what way are both humans and bacteria the same?

• A. Both are living things.

• B. Both are non-living things.

• C. Both are multicellular organisms.

• D. Both are single-celled organisms.

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How are multi-celled and single-celled organisms different?

• Multi-celled organisms need energy to survive, while single-celled organisms need no energy to survive.
• Single-celled organisms can be seen without using a microscope, while multi-celled organisms are microscopic.
• Multi-celled organisms have large numbers of specialized cells to perform a variety of life functions, while single-celled organisms complete life functions with one cell.
• Single-celled organisms have large numbers of identical cells that all perform the same function, while multi-celled organisms have cells that are all different and perform different life functions.

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