Characteristics of cells; Cell Theory

A _______ is the smallest functional and structural unit of all living organisms.

• cell
• molecule

• element

• compound

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NGSS.MS-LS1-1

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An ________________ is any living thing that carries out all of its own life processes.

• organism
• compound

• element

• atom

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NGSS.MS-LS1-1

All organisms are made up of __________; some have only one cell while others have trillions of cells.

• cells
• cell walls

• protists

• amoebas

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NGSS.MS-LS1-1

______________________ was the first person to describe cells in 1665 after he built a microscope to be able to look at tiny objects. After looking at an object under the microscope, he thought it was made of little boxes which he named cells.

• Robert Hooke
• Anton van Leeuwenhoek

• Matthias Schleiden

• Theodor Schwann

What does the term “cells” mean in Latin? ______________________

• small rooms
• big rooms

• mid-sized rooms

• all of the choices

Cells are small because their size is limited by their outer ___________ area.

• cell wall

• cytoplasm

• surface

• fluid

Most cells are too small to be seen without a stethoscope.

• True

• False

Cells take in ________ and get rid of ____________ through their outer surface.

• waste/food

• food/waste

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True or False: The cell theory says that:

a. all organisms are made of one or more cells

• b. the cell is the basic unit of all organisms

• c. all cells come from other/existing cells

• True

• False

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NGSS.MS-LS1-1

____________________ organisms are made up of just one cell. This single cell must carry out all of the functions for life.

• Unicellular
• multicellular

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NGSS.MS-LS1-1