BC lab le 4 morse

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15 Terms

1
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1

A. Bile contains an acid.

B. Bile is viscous and has an alkaline reaction.

1 C

2
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2

A. Bile contains Chlorides

B. Bile is stored in the liver

2 A

3
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3

A. Hay’s test is for bile pigments

B. Nitrous acid is used to test for bile pigments

3 D

4
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4

A. Heller’s ring test is a test for the presence of

albumin

ring test

B. Yellow ring at the junction is the result of Heller’s

4 A

5
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5

A. Acetic acid and Barium sulfate are used to test

the presence of sulfates in urine

B. Nitric acid and silver nitrate are used to test the

presence of chlorides in urine

5 B

6
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6

A. Cholic acids and Chenodeoxycholic acids are the primary bile acids

B. Sodium Cholate and Sodium chenodeoxycholate the primary bile salts

6 C

7
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7

A. Ether is used to extract cholesterol in bile

B. Test for cholesterol is Acetic anhydride - H₂SO₄

test

7 C

8
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8

A. Sodium Phosphates is an earthy phosphate

B. Calcium phosphate is an alkali phosphate

8 D

9
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9

A. Ammonium hydroxide is used to precipitate the earthy phosphates

B. Magnesia mixture is used to precipitate the alkali phosphates

9 C

10
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10

A. normal urine shows reddish orange with

Benedict’s test

B. Benedict’s Reagent is composed of CuSO4,

sodium carbonate and sodium citrate

10 B

11
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11

A. normal urine shows reddish orange with

Benedict’s test

B. Benedict’s Reagent is composed of CuSO4,

sodium carbonate and sodium citrate

11 A

12
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12

A. Rf is the ratio of the distance traveled by the

amino acid and the distance traveled by the solvent

B. Amino acid is the analyte in paper

chromatography

12 C

13
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13

A. The faster the analyte will travel, the higher its Rf value

B. Higher molecular weight analyte travels faster in the paper chromatography than lower MW

13 A

14
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14

A. In coagulation test, the turbidity due to the phosphates in urine confirms the presence of Mg

B. In the Heller’s ring test, the reagent is NH₄OH

14 A

15
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15

A. Ninhydrin is the color developer in paper

chromatography

B. The color of the analyte with the color developer in paper chromatography is purple

15 C