6th - 2.1

A ___ is the basic unit of life and the smallest part of a living thing that is capable of life.

• atom

• molecule

• cell

• compound

Until the development of the _____ scientists were not even aware of the existence of cells.

• telescope

• slide

• microscope

• television

Robert Hooke first observed cells in a piece of ____.

• flower

• onion

• cork

• cheese

Leeuwenhoek made ______ of his observations.

• detailed models

• detailed drawings

• soup

• sculptures

____ organisms are made up of more than one cell.

• Unicellular

• Multicellular

• Bicellular

• Exocells

Select all the statements that are a part of cell theory. (Choose 3)

• All cells come from existing cells.

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

• All living things have cells that are only one atom.

• Cells are the basic units of structure and function in living things.

A group of similar cells that work together to perform the same function makes up a type of ____.

• cell

• organ

• tissue

• system

An ____ is a group of two or more types of tissue that work together to carry our one specific function.

• tissue

• system

• blood cell

• organ

True or False.

Plants have organs.

• True

• False

True or false.

All tissue cells look the same.

• True

• False