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HCl:

A. is an enzyme

B. creates the acid condition necessary for pepsin to work

C. is secreted by the small intestine

D. activates salivary amylase

E. two of these

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Elin Hessel
Elin HesselLv2
28 Sep 2019

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Related questions

This enzyme is produced by the tongue

Salivary amylase is able to chemically digest the following injested nutrient(s)

Pepsin able to chemically digest the following injested nutrient(s)

Pancreatic juice able to chemically digest the following injested nutrient(s)

This enzyme is produced by the intestinal glands in the small intestine

This absorbed building block will enter a lacteal after moving across the wall of the small intestine (hint: the building blocks of nutrients are amino acids, monosaccharides, or fatty acids! choose one of those answers!)

.A

lingual lipase
B.

carbohydrates only
C.

proteins only
D.

proteins, carbohydrates, lipids, and nucleic acids
E.

lipids only
F.

pepsin
G.

monosaccharides
H.

amino acids
I.

brush border enzymes
J.

fatty acids

1. The small intestine is mostley suspended by

a. greater omentum

b. mesentery proper

c. lesser omentum

d. transverse mesocolon

2. the beer belly would be

a. lesser omentum

b. greater omentum

c. transverse mesocolon

d. mesentery proper

3. The first step in sugar break-down is done by

a. HCl

b. lipase

c. pepsin

d. amylase

4. ________ are broken down into monosacchardies before entering ___

a. carbohydrates/intestinal mucosa

b. proteins/intestinal mucosa

c. carbohydrates/ esophagus

d. lipids/stomach

6 One action of HCl in the stomach is

a. moisten and lubricate food so it will pass to the intesines easily

b. raise the pH of the stomach content

c. aid in the aboorption of vitamin B12

d. convert pepsinogen to pepsin

e. protect the mucosa

Part II. Enzymes and Digestion

A.) You should have been surprised to read that salivary amylase survives the stomach to enter the small intestine with much of its enzyme activity intact. A) Why were you surprised, i.e., what is the expected fate of proteins in the stomach? B) Try to come up with some general possible explanations as to why salivary amylase doesn’t suffer the usual fate of proteins in the stomach.

i)

ii)

B) Pancreatic amylase is absent in all newborn infants. Activity is present at only very low levels during the first 6 months of life, and doesn’t begin to reach normal levels until about 9 months of age, yet most infants seem to do just fine without it. Suggest reasons why this is so (include a consideration of the components of the usual diet of newborns).

C) Although the disease is quite rare, malabsorption of dietary starch occurs in individuals with a genetic deficiency in pancreatic a-amylase activity. Although early infancy (until about 9 months of age) is generally unremarkable in these patients, they soon have serious medical problems. What do you think some of the symptoms and/or problems might be? Why?

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