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Biology > Digestive Enzymes > Flashcards

Digestive Enzymes Flashcards

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1
Q

What are four disaccharidases?

A

maltase, isomaltase, lactase, and sucrase

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2
Q 
Enzyme: Maltase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Carb
Site of Production: Intestinal glands
Site of Function: Duodenum
Function: Hydrolyzes maltose to two glucose molecules

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3
Q

What are examples of brush-border enzymes?

A

disaccharidases and peptidases

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4
Q 
Enzyme: Isomaltase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Carb
Site of Production: intestinal glands
Site of Function: Duodenum
Function: hydrolyzes isomaltose to two glucose molecules

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5
Q 
Enzyme: Lactase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Carb
Site of Production: Intestinal glands
Site of Function: Duodenum
Function: Hydrolyzes lactose to glucose and galactose

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6
Q 
Enzyme: Sucrase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Carb
Site of Production: Intestinal glands
Site of Function: Duodenum
Function: hydrolyzes sucrose to glucose and fructose

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7
Q

What are peptidases?

A

enzymes that break down proteins (peptides)

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8
Q 
Enzyme: aminopeptidase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: protein
Site of Production: Intestinal glands
Site of Function: duodenum
Function: removes the N-terminal amino acid from a peptide

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9
Q 
Enzyme: Dipeptidase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: protein
Site of Production: intestinal glands
Site of Function: duodenum
Function: cleave the peptide bonds of dipeptides to release free amino acids

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10
Q 
Enzyme: Enteropeptidase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Protein
Site of Production: intestinal glands
Site of Function: duodenum
Function: converts trypsinogen to trypsin and procarboxypeptidases A and B to carboxypeptidases A and B

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11
Q

What is secretin?

A

peptide hormone that causes pancreatic enzymes to be released into the duodenum; regulates the pH of the digestive tract by reducing HCl secretion from parietal cells and increasing bicarbonate secretion from the pancreas; enterogastrone

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12
Q

What is an enterogastrone?

A

a hormone that slows motility through the digestive tract

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13
Q

What is cholecystokinin (CCK)?

A

secreted in response to the entry of chyme into the duodenum; stimulates release of bile and pancreatic juices and promotes satiety

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14
Q 
Enzyme: Pancreatic amylase 
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: carb
Site of Production: pancreas (acinar cells)
Site of Function: duodenum
Function: hydrolyzes starch to maltose and dextrins

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15
Q 
Enzyme: Chymotrypsin 
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Proteins
Site of Production: Pancreas (acinar cells)
Site of Function: Duodenum
Function: Hydrolyzes specific peptide bonds; activated by trypsin

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16
Q 
Enzyme: Trypsin 
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Protein
Site of Production: Pancreas (acinar cells)
Site of Function: Duodenum
Function: Hydrolyzes specific peptide bonds; converts chymotrypsinogen to chymotrypsin; activated by enteropeptidase

17
Q 
Enzyme: Bile*
Nutrient: 
Site of Production:
Site of Function:
Function:
A 
Nutrient: lipids
Site of Production: liver (stored in gallbladder)
Site of Function: Duodenum
Function: emulsifies fat
*not an enzyme
18
Q 
Enzyme: Lipase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: lipids
Site of Production: pancreas (aciner cell)
Site of Function: duodenum
Function: hydrolyzes lipids

19
Q 
Enzyme: (Pro)carboxy peptidases A and B
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Proteins
Site of Production: Pancreas (acinar cells)
Site of Function: Duodenum
Function: hydrolyzes terminal peptide bond at carboxy end; activated by enteropeptidase

20
Q 
Enzyme: Pepsin
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: Protein
Site of Production: Gastric glands (chief cells)
Site of Function: Stomach
Function: hydrolyzes specific peptide bonds; activated by HCl

21
Q 
Enzyme: Salivary amylase
Nutrient: 
Site of Production:
Site of Function:
Function:
A

Nutrient: carbohydrates
Site of Production: salivary glands
Site of Function: mouth
Function: hydrolyzes starch to maltose and dextrins

Biology (15 decks)

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