Chemistry of Digestion

How does food move through your digestive tract?

• Gravity

• By wavelike muscle contractions

• By cilia

• By. chemical absortion

Where does most of the digestive process take place?

• Small Intestine

• Stomach

• Large Intestine

What does the liver do to help digestion?

• Makes important enzymes

• Neutralizes stomach acids

• Regulates Enzymes

• Produces Bile

Which of these can harm the intestinal lining?

• Aspirin

• Antibiotics

• Caffeine

The process of digestion begins in

• Stomach

• Mouth

• Food pipe

• Small intestine

What is the primary function of the digestive system?

• To circulate blood throughout the body

• To absorb oxygen from the air

• To convert food into simpler molecules that can be absorbed and used by the cells of the body

• To remove waste products from the body

What is the role of the pancreas in digestion?

• It produces bile to break down fats

• It absorbs nutrients from digested food

• It produces enzymes that help digest carbohydrates, proteins, and fats

• It stores undigested food until it can be eliminated

Which statement best describes the process of digestion?

• It is a physical process that breaks food into smaller pieces without chemical change

• It is a chemical process that breaks down food into smaller molecules without physical change

• It involves both physical and chemical processes to break down food into molecules that can be absorbed

• It is a process that only occurs in the stomach

Which of the following best describes the role of the esophagus in the digestive system?

• It stores food before digestion

• It secretes digestive enzymes

• It transports food from the mouth to the stomach

• It absorbs nutrients from digested food

The process of breaking down food into molecules the body can use is known as:

• Respiration

• Digestion

• Circulation

• Excretion