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2ND SEM BIOCHEMISTRY > [RECALLS] PRELIMS - Topic 30: Gastric & Salivary Digestion (By: Dr. Ea Guiani) > Flashcards

[RECALLS] PRELIMS - Topic 30: Gastric & Salivary Digestion (By: Dr. Ea Guiani) Flashcards

1
Q

Monosaccharides

A

CHO

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2
Q

Amino acids

A

CHON

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3
Q

Monoacylglycerol

A

Fats

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4
Q

Fatty acids

A

Fats

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5
Q

Glycerol

A

Fats

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6
Q

Hormones that aid and regulate the digestive system:

a. gastrin
b. secretin
c. CCK
d. GIP
e. all of the above
f. a & b

A

e. all of the above

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7
Q

Water is greatly reabsorbed in which segment of the small and large intestine?

a. jejunum
b. ileum
c. duodenum
d. cecum
e. colon

A

a. jejunum

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8
Q

Saliva has a resting pH of 6.4 – 6.9, and an active pH of 7.0 – 7.3

a. true
b. false

A

a. true

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9
Q

Gland which produces a moderately viscous secretion and accounts for 70% content of saliva

a. gastric gland
b. parotid gland
c. submaxillary gland
d. sublingual gland

A

c. submaxillary gland

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10
Q

Produced by von Ebner’s glands

a. pancreatic lipase
b. salivary amylase
c. lingual lipase
d. gastric lipase

A

c. lingual lipase

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11
Q

Stimulates secretion of pepsinogen and HCl

A

Gastrin

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12
Q

Signals secretion of sodium bicarbonate and bile in the liver.

A

GIP

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13
Q

Signals release of digestive enzymes in pancreas

A

CCK

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14
Q

Induce insulin secretion and decreases stomach churning

A

GIP

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15
Q

Signals emptying of bile in gall baldder

A

CCK

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16
Q

Has an excitatory and inhibitory phase

A

Intestinal phase

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17
Q

Stimulates distention of the stomach, presence of food in stomach and increase in pH.

A

Gastric phase

18
Q

Occurs before food enters the mouth

A

Cephalic phase

19
Q

G cells release gastrin which stimulates parietal cells to release HCl

A

Gastric phase

20
Q

Taste and smell stimulus is sent to the hypothalamus and medulla oblongata.

A

Cephalic phase

21
Q

An endopeptidase secreted by the chief cells and activated by HCl.

a. pepsin
b. pepsinogen
c. Gastrin
d. Pancreatic lipase

A

b. pepsinogen

22
Q

Secreted by the parietal cells

a. secretin
b. Pepsin
c. HCl
d. pepsinogen

A

c. HCl

23
Q

Important in neonates with milk as substrate.

a. pancreatic lipase
b. salivary amylase
c. gastric lipase
d. ptyalin

A

c. gastric lipase

24
Q

Hydrochloric acid digestion barrier.

a. mucin
b. HCO3
c. tight junction between cells
d. all of the above

A

d. all of the above

25
Q

Parietal cells of the stomach also secrete a glycoprotein called intrinsic factor which enables the absorption of:

a. vitamin D
b. vitamin K
c. Vitamin B12
d. Vitamin C

A

c. Vitamin B12

26
Q

Functions of bile:

a. emulsification
b. neutralization of acids
c. lowers surface tension
d. all of the above

A

d. all of the above

27
Q

Cholesterol and phosphatidylcholine are dissolved by bile salts in the form of:

a. micelles
b. measles
c. missiles
d. misses

A

a. micelles

28
Q

Most alkaline secretion of the human body stimulated by secretin, acetylcholine, and pancreozymin

a. gastric juice
b. salivary amylase
c. pancreatic lipase
d. pancreatic juice

A

d. pancreatic juice

29
Q

Amylase catalyzes the hydrolysis of starches acting on alpha 1-4 glycosidic bond

a. true
b. false

A

a. true

30
Q

Spared, not hydrolyzed linkages by amylase except:

a. alpha 1-4 glycosidic link
b. alpha 1:6 linkages
c. terminal 1:4 linkages
d. alpha 1:4 linkages next to the branching points

A

a. alpha 1-4 glycosidic link

31
Q

Glucose

A. SLGT
B. GLUT 5
C. Both

A

C. Both

32
Q

Galactose

A. SLGT
B. GLUT 5
C. Both

A

C. Both

33
Q

Fructose:

A. SLGT
B. GLUT 5
C. Both

A

B. Glut 5

34
Q

Sugar alcohols

A. SLGT
B. GLUT 5
C. Both

A

B. Glut 5

35
Q

Principal end products of carbohydrate digestion in the intestinal lumen

a. alpha-limit dextrin
b. maltotriose
c. Maltose, lactose, sucrose
d. All of the above

A

d. All of the above

36
Q

Major dietary lipids

a. triacylglycerol
b. triglycerides
c. phospholipids
d. all of the above

A

d. all of the above

37
Q

Digestion of nucleic acids: ribonuclease and deoxyribonuclease:

a. true
b. false

A

a. true

38
Q

Completes the digestion of amino acid:

a. dipeptidases
b. aminopeptidases
c. none of the above

A

a. dipeptidases

39
Q

This mineral requires vitamin D for absorption, enhances permeability of mucosal cells and induces synthesis of calbindin:

a. calcium
b. iron
c. biotin
d. zinc

A

a. calcium

40
Q

This vitamin is enhanced by vitamin C and alcohol. It accumulates in the mucosal cells bound to ferritin, but goes out of the mucosal cells via
transport protein ferropotin.

a. calcium
b. iron
c. biotin
d. zinc

A

b. iron

2ND SEM BIOCHEMISTRY (33 decks)

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