bio chapter 34

Lipases are enzymes that break down ________. A. disaccharides B. lipids C. proteins D. cellulose

lipids

The acidic nature of chyme is neutralized by ________. A. potassium hydroxide B. sodium hydroxide C. bicarbonates D. vinegar

bicarbonates

The digestive juices from the liver are delivered to the ________. A. stomach B. liver C. duodenum D. colon

colon

Which of the following is a pseudo-ruminant? A. cow B. pig C. crow D. horse

horse

Which of the following statements about digestive processes is true? A. Amylase, maltase and lactase in the mouth digest carbohydrates. B. Trypsin and lipase in the stomach digest protein. C. Bile emulsifies lipids in the small intestine. D. No food is absorbed until the small intestine.

Bile emulsifies lipids in the small intestine.

Which of the following statements is untrue? A. Roughage takes a long time to digest. B. Birds eat large quantities at one time so that they can fly long distances. C. Cows do not have upper teeth. D. In pseudo-ruminants, roughage is digested in the cecum.

Birds eat large quantities at one time so that they can fly long distances.

Which of the following statements about the digestive system is false? A. Chyme is a mixture of food and digestive juices that is produced in the stomach. B. Food enters the large intestine before the small intestine. C. In the small intestine, chyme mixes with bile, which emulsifies fats. D. The stomach is separated from the small intestine by the pyloric sphincter.

Food enters the large intestine before the small intestine.

Which of the following statements about the small intestine is false? A. Absorptive cells that line the small intestine have microvilli, small projections that increase surface area and aid in the absorption of food. B. The inside of the small intestine has many folds, called villi. C. Microvilli are lined with blood vessels as well as lymphatic vessels. D. The inside of the small intestine is called the lumen.

Microvilli are lined with blood vessels as well as lymphatic vessels.

Where does the majority of protein digestion take place? A. stomach B. duodenum C. mouth D. jejunum

stomach