IB Biology Digestion

Where does the digestion of proteins take place?

• Mouth and stomach

• Stomach and small intestine

• Mouth and small intestine

• Mouth, stomach and small intestine

Where does the digestion of carbohydrates take place?

• Mouth

• Mouth and Stomach

• Mouth and small Intestine

• Mouth and large intestine

• Stomach

Where does the digestion of lipids take place?

• Stomach

• Stomach and small intestine

• Small intestine

• Mouth, stomach and small intestine

• Mouth and small intestine

What are the two components of the gastric juice?

• Pepsin and hydrochloric acid

• Saliva and bile

• Bile and hydrochloric acid

• Amylase and hydrochloric acid

What is the enzyme contained in the saliva?

• Amylase

• Pepsin

• Hydrochloride acid

• Lipase

finger-like projections in the small intestine that absorb nutrients

• digestion

• absorption

• peristalsis

• villi

Tags

NGSS.MS-LS1-7

For what purpose are restriction endonucleases used in the laboratory?

• To limit the length of DNA molecules in the nucleus

• To cut specific base sequences to open DNA molecules

• To prevent release of DNA from the nucleus

• To protect viral DNA from digestion by bacterial enzymes

Which enzyme is responsible for the breakdown of proteins in the stomach?

• Amylase

• Pepsin

• Lipase

• Lactase

What is the primary function of bile in the digestive system?

• To digest carbohydrates

• To emulsify fats

• To break down proteins

• To neutralize stomach acid

Where does the majority of nutrient absorption occur in the digestive system?

• Stomach

• Large intestine

• Small intestine

• Esophagus