Biology Test Review

The reason why we breathe is the same reason that we:

• drink water

• eat sugar

• eat vitamins

• eat protein

The main purpose of the respiratory system is to:

• help you live

• help you to communicate

• bring oxygen into the body

• take carbon dioxide out of the body

The second purpose of the respiratory system is to:

• help you live

• help you to communicate

• bring oxygen into the body

• take carbon dioxide out of the body

The third purpose of the respiratory system is to:

• help you live

• help you to communicate

• bring oxygen into your body

• take carbon dioxide out of the body

This molecule is not needed by the cells in our body:

• H2O

• CO2

• O2

• C6H12O6

The reason we need oxygen is:

• to allow us to burn glucose

• to help us breathe

• to allow us to live

• to help us make glucose

This molecule is necessary for combustion:

• CO2

• H2O

• N2

• O2

The reason why we eat sugar is:

• to make ATP

• to perform cellular respiration

• to give us energy

• all of the above

The reason why we breathe oxygen is:

• to make ATP

• to perform cellular respiration

• to give us energy

• all of the above

The organelle that takes glucose and reacts it with oxygen to produce ATP is the:

• ribosome

• nucleus

• mitochondrion

• endoplasmic reticulum