Metabolism/Molecules

Starch creates what molecule?

• amino acids

• oxygen

• glucose

• protein

Starch is broken down in what body system?

• respiratory system

• digestive system

• circulatory system

Is a glucose molecule smaller or larger than a starch molecule?

• smaller

• larger

• the same size

How do glucose and amino acid molecules get into the circulatory system(blood)?

• They are absorbed by villi, which contain blood vessels

• They are absorbed by alveoli, which contains blood vessels

• They just absorb into blood

Protein is broken down into which molecule?

• amino acids

• oxygen

• glucose

• starch

Protein is broken down in what body system?

• digestive system

• respiratory system

• circulatory system

Protein is a larger molecule than an amino acid molecule.

• true

• false

Oxygen is inhaled through the mouth, and then travels to the __________ system first.

• circulatory

• respiratory

• digestive

Oxygen is broken down into what molecule?

• starch

• glucose

• amino acid

• oxygen does not break down into another molecule.

Oxygen enters the circulatory system(blood) through what structure?

• alveoli, which is in the lungs and contains blood vessels

• villi, which is in the small intestine and contains blood vessels

• it is just absorbed into blood