7.6

Gas exchange is needed to supply _____________ to cells and remove __________________

• carbon dioxide; oxygen

• oxygen; food

• oxygen; carbon dioxide

• carbon dioxide; water

Tags

NGSS.MS-LS2-3

The air sacs that are covered with capillaries where gas exchange takes place.

• Bronchi

• Trachea

• Oxygen

• Alveoli

Tags

NGSS.MS-LS2-3

Why do the cells of your body need glucose?

• for energy

• to excrete

• to absorb carbon dioxide.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

What are the products in this chemical equation?

• villi and alveoli

• water, carbon dioxide, and energy

• glucose and oxygen

• blood and cells

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

When a person like Amaya burns glucose, where do the product molecules of CO2 and H20 go?

• out of the body through sweat

• out of the body through pooping

• out of the body through breathing

• turned into muscle

Tags

NGSS.MS-LS1-7

What's the difference between starch and glucose?

• Starch is a type of protein and glucose is a sugar

• Starch is made up of many glucose molecules bonded together

• Glucose is made up of many starch molecules bonded together

• Glucose is a type of protein and starch is a sugar

Why do molecules in the small intestine seem like they are disappearing?

• The molecules are getting absorbed into the blood

• The molecules are returning to the stomach

• The molecules are going to the large intestine

• The molecules are broken down and no longer exist

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-7

Why are some molecules absorbed into the blood stream, but some molecules are not?

• Some molecules are bigger than others.

• Some molecules are liquids.

• Some molecules are healthier for you.

• Some molecules are smaller than others.

When you eat, what happens to the fiber in your food?

• Fiber is broken down into starch molecules and absorbed

• Fiber is too big to be absorbed, so it is excreted as solid waste

• Fiber is broken down into glucose and absorbed

• Fiber is coming together and getting bigger. Then it is absorbed.

When you breathe, your lungs take in ___ and remove ___.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/waste

• waste/air