O2 is the symbol for ___________
Oxygen
CO2 stands for _________
Cellular respiration gives us _________ as its main product.
ATP or Energy

Name the structure shown above.
Lungs
The everyday name we use for glucose is ________.
sugar
What is the proper name for the energy released during cellular respiration?
ATP
Cells need _________ to do work.
Energy or ATP
Name the red and blue structures shown in the diagram below.

Veins and arteries or blood vessels
Inhaling oxygen and exhaling carbon dioxide is known as
Gas exchange
Which organ system in humans is most directly involved in the transport of oxygen needed for cellular respiration?
Circulatory system
Our cells produce lactic acid which causes our bodies to get ________ __________.
Muscle Cramps
What is the name of the tube-like structure that transports air from the pharynx to the lungs?
Trachea
In which process do organisms use glucose and oxygen to produce energy known as ATP?
_________ is known as the basic unit of life.
Cells or The cell.
If cells stop performing cellular respiration, what would happen to them?
The cells die or stop functioning.
Which lung is bigger? The left or the right?
Right lung
_________________________ occurs continuously in the cells of all organisms and often involves an exchange of gases.
Cellular respiration
The organelle where cellular respiration happens is known as _______________.
Mitochondria
Cellular respiration, respiratory system and circulatory system are essential during exercise because...
Respiratory system provides oxygen to the body, the circulatory system delivers it to every cell, the cells use it to produce energy.
The heart is a _________ and the size of a ________.
a muscle and fist