Nutrition Quiz 1

Digestion of carbohydrates (e.g., starch) occurs in the...

• Mouth and stomach

• Mouth and

  small intestine

• Stomach and

  small intestine

• Small intestine and large intestine

Answer explanation

In mouth: salivary amylase

In S.I: pancreatic amylase & intestinal maltase

Digestion of protein occurs in the...

• Mouth and stomach

• Mouth and small intestine

• Stomach and small intestine

• Small intestine and large intestine

Answer explanation

Protease from the pancreas and duodenum digests proteins

Digestion of fats occurs in the...

• Mouth and stomach

• Mouth and small intestine

• Stomach and small intestine

• Small intestine only

Answer explanation

Lipase from the pancreas and duodenum digests fats

Absorption of digested nutrients happens mainly in the...

• ileum

• duodenum

• jejunum

• colon

Answer explanation

The last part of the small intestine, the ileum, is where most absorption occurs

What is assimilation?

• Food is taken into the body and broken down into smaller molecules

• Digested nutrients are absorbed into the bloodstream and taken to other parts of the body

• Nutrients are converted into new protoplasm or used for energy production

• Undigested food substances are removed from the body

Glucose enters the liver through the...

• Hepatic artery

• Hepatic vein

• Aorta

• Hepatic portal vein

What are amino acids used for?

• To build new protoplasm such as cell membranes

• To be stored in the liver

• To be used in respiration to provide energy for cells

• To synthesize new cytoplasm for cell growth and repair

Answer explanation

How each biomolecule is assimilated:

Fats -> build new protoplasm like cell membranes

Glucose -> substrate for respiration to provide energy

Amino acids -> synthesize cytoplasm, enzymes and hormones

Which of the following is NOT a role of the liver?

• Helps in blood glucose regulation

• Detoxification of toxic substances

• Storage of bile

• Deamination of amino acids

Hormones are substances produced in the _______ gland

Answer explanation

Endocrine glands secrete hormones directly into the bloodstream (no duct)

Insulin and glucagon are hormones produced by the liver

• True

• False

Answer explanation

Insulin and glucagon are produced in the pancreas! By a special group of cells known as the Islets of Langerhans.

The liver responds to these hormones (e.g., converts glucose to glycogen)