Biology Ch 42 44

Front 1

The enzyme _______, located in the parietal cells, catalyzes the formation of carbonic acid from carbon dioxide and water

Back 1

carbonic anhydrase

Front 2

Protons are actively pumped into the lumen of the stomach by the _______

Back 2

parietal cells

Front 3

Cl– ions are exchanged for _______ to gain entry into parietal cells. They then move into the stomach lumen through chloride channels

Back 3

bicarbonate ions

Front 4

HCl acts as a barrier to _____ present in food

Back 4

pathogens

Front 5

HCl activates digestive enzymes such as ______

Back 5

pepsin

Front 6

HCl disrupts the __________, enhancing their degradation by enzymes

Back 6

tertiary and secondary structure of proteins

Front 7

In the stomach, 1._______ degrades large polypeptides to smaller polypeptides. In the small intestine, pancreatic enzymes such as 2.______ degrade smaller polypeptides to amino acids. Amino acids are absorbed in the small intestine by the 3._______

Back 7

1.pepsin
2.trypsin
3.Na+-amino acid cotransport mechanism

Front 8

The bulk of fat digestion takes place in 1.______. Bile released from the gallbladder helps to break up large fat globules to smaller ones, while 2._____ released from the 3._____ cleave the fats to fatty acids and other small lipids. Absorption of these small lipids occurs using fatty acid–binding proteins located in the small intestine.

Back 8

1.the small intestine
2.lipases
3.pancreas

Front 9

What facilitates the breakdown of complex fats into fatty acids?

Back 9

bile salts

Front 10

decreased production of bile salts would result in?

Back 10

decreased fatty acid absorption

Front 11

The enzyme _______, located in the parietal cells, catalyzes the formation of carbonic acid from carbon dioxide and water

Back 11

carbonic anhydrase

Front 12

Which action would result in decreased blood glucose levels?

Back 12

Release of insulin by the pancreas Correct Correct. Insulin release promotes glucose uptake by cells and would result in decreased blood glucose levels

Front 13

alimentary canal

Back 13

the structure in which digestion takes place. It begins at the mouth and ends at the anus

Front 14

what cleaves glycosidic bonds in starch, glycogen, and other polymers?

Back 14

Amylase

Front 15

what is the glycoprotein that combines with water to lubricate the food bollis called?

Back 15

mucins