A&P Lab Exam 2: Exercise 35

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Green, yellow, orange and red

A positive test for the presence of sugar is indicated by which colors?

Light blue, medium blue, dark blue and black

A postive test for the presence of starch is indicated by which colors?

The hydrochloric acid in the stomach acid corrodes the dentin away

People who practice purging themselves after eating (bulimics) ruin the dentin of their teeth. What causes the dentin loss?

Salivary glands; Pancreas; Small intestine

Enzymes that digest carbohydrates are produced by what organs?

Mouth; Pancreas; Stomach

Enzymes that digest lipids are produced by what organs?

Stomach; Pancreas; Small intestine

Enzymes that digest proteins are produced by what organs?

Stomach

Protein digestion begins in the __________.

Amino acids

Proteins are hydrolyzed into and absorbed as __________.

Lipase

enzyme that hydrolyzes lipids

Protease

enzyme that hydrolyzes proteins

Amylase

enzyme that hydrolyzes starch

Macromolecules

large molecules resulting from anabolism

Absorption

process that happens to nutrients after digestion

Substrate

the molecule acted on by an enzyme

Product

the molecule produced as a result of an enzymatic process

Emulsification

Bile salts prepare lipids for digestion by a process called ________________.

Mouth

Carbohydrate digestion begins in the __________.

Monosaccharides

Carbohydrates are hydrolyzed into and absorbed as _____________.

Mouth

Lipid digestion begins in the _________.

Glycerol; fatty acids

Lipids are hydrolyzed into and absorbed as __________ and __________.

7.4

The enzymes that digest carbohydrates work best at a(n) ______________ pH.

Lugol's iodine

The reagent used to test for the presence of starch was _____________.

Benedict's solution

The reagent used to test for the presence of sugar was ______________.

Enzymes work better on chewed and broken down mechanically into smaller portions with a greater surface area

The reason why we chew food (and crumbled the cracker in Lab Activity 1) is to _____________.

Proteins; lipids; carbohydrates

The three major food macromolecules digested in our GI tract are _____________, ______________, and _______________.

Control tubes

Why were there 2 tubes in Lab Activity 1 that had no enzyme added to them?

Enzyme

a biological catalyst


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