Lesson 1, Chapter 4

Question 1

Water

Answer 1

A substance that makes up about two-thirds of your body and is necessary for most chemical reactions in the body to occur

Question 2

Food

Answer 2

A substance that provides the necessary nutrients for you to stay alive and contains stored energy

Question 3

Oxygen

Answer 3

A substance that is necessary to release energy from the food you eat

Question 4

ATP Molecules

Answer 4

Molecules that store energy released from food

Question 5

Free Radicals

Answer 5

Single atoms of oxygen that can damage cells

Question 6

Antioxidants

Answer 6

Chemicals, found primarily in plats, that can bind to single atoms of oxygen

Question 7

Heat

Answer 7

Warmth

Question 8

Pressure

Answer 8

The application of force on an object

Question 9

Atmospheric Pressure

Answer 9

The pressure of the air around you on your body

Question 10

Blood Hydrostatic Pressure

Answer 10

The pressure of water in blood pushing outward against the walls of the blood vessels

Question 11

Interstitial Hydrostatic Pressure

Answer 11

The pressure of fluid outside the blood vessels pushing inward against the blood vessels

Question 12

Blood Osmotic Pressure

Answer 12

The pressure of particles in the blood, such as proteins, that causes water to move from the tissues to inside the blood vessels