F2 Biological World

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

______________ are the smallest blood vessels.

• Arteries
• Veins
• Capillaries

What carries oxygen around the body?

• Plasma

• Red Blood Cells

• Platelets

• White Blood Cells

Tags

NGSS.HS-LS1-7

The trachea leads directly to the...

• Bronchioles

• Bronchi

• Oesophagus

• Alveoli

When you breathe, your lungs take in ___ and exchange it for ___.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/waste

• waste/air

Oxygen combines with digested food molecules in body cells to release the energy stored in them. This process is called ................... .

• respiration
• breathing
• digestion

We can test the presence of carbon dioxide in exhaled air by bubbling it into .................... . 

• limewater
• lime juice
• lime
• water

Why would a person want to limit their intake of sodium (salt)?

• Sodium weakens bones and teeth

• Sodium can lead to high blood pressure

• Sodium is linked to cancer

• Sodium causes a person to be diabetic

What gas is given off as a result of respiration?

• Oxygen

• Carbon dioxide

• Hydrogen

• Nitrogen

What is the arrow pointing at?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle