Life Science Review

The basic unit of structure and function in any living thing is:

• cell

• tissue

• organ

• organ system

• organism

an individual living thing

• organism

• cell

• unicellular

• heterotroph

4. What does multicellular means?

• 1. one cell

• 2. no cell

• 3. many cell

Is composed of a single cell

• Unicellular

• Multicellular

• Both

Organs that perform the same function in a multicellular organism is/are called a(n) _____________.

• cells

• tissues

• organ system

• organs

A group of tissues that perform a similar function is called a(n) ____________ . Examples include the heart, lungs, or stomach.

• cell

• tissue

• organ

• organ system

What is a group of cells that have similar functions? Examples include nervous, epithelial, muscle, and connective _________ .

• cells

• tissues

• organs

• atoms

How do scientists organize living things?

• by looks
• by shared characteristics
• by size
• by differences

Which of the following shows the correct order of the levels of classification from largest to smallest?

• Species - Class- Order - Kingdom - Genus - Family - Phylum

• Species - Genus - Family - Order - Class - Phylum - Kingdom

• Kingdom - Phylum - Class- Order - Family - Genus - Species

• None of the above

Mammals, fish, birds, reptiles and amphibians are all ___.

• invertebrate

• vertebrate