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Post-test Biochemistry Day 1

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

This is not considered a true biopolymer since it is related by their physical rather than chemical properties.

a)

Fats

b)

Lipids

c)

Carbohydrates

d)

Proteins

2.

A deficiency of this Vitamin causes growth retardation, cheilosis, glossitis, seborrheic dermatitis, and photophobia.

a)

Vitamin B1

b)

Vitamin B2

c)

Vitamin B3

d)

Vitamin B5

3.

1. Which of the following are Pyrimidine-derived Nitrogenous bases?

I. Thymine

II. Uracil

III. Cytosine

IV. Adenine

a)

A. IV only

b)

B. I only

c)

C. I and II only

d)

D. I, II, and III only

4.

It is the water soluble component of starch that produces deep-blue coloration when Iodine test is performed.

a)

Amylose

b)

Amylase

c)

Amylopectin

d)

Amylopsin

5.

It is a chronic deficiency of calories despite adequate intake of proteins.

a)

Marasmus

b)

Primary Malnutrition

c)

Kwashiorkor

d)

Secondary Malnutrition

6.

An unsaturated fatty acid considered as the major precursor for eicosanoids.

a)

Arachidonic Acid

b)

Arachidic Acid

c)

Linoleic Acid

d)

Linolenic Acid

7.

Alkaptonuria is caused by deficiency of Homogentisate oxidase. Phenylketonuria is caused by deficiency of Phenylalanine oxidase.

a)

Statement 1 is true and Statement 2 is false

b)

Statement 1 is false and Statement 2 is true

c)

Both statements are true

d)

Both statements are false

8.

The following tests have been conducted to an unknown analyte.

Benedict test: (+)

Bial's test: (-)

Seliwanoff's test: (+)

Lugol's test: (-)


Which of them is the most likely compound?

a)

Ribulose

b)

Ribose

c)

Fructose

d)

Starch

9.

A holoenzyme without its corresponding cofactor is termed a/an

a)

Zymogen

b)

Apoenzyme

c)

Proenzyme

d)

Prodrug

10.

Hopkin's Cole is a test used to identify what amino acid?

a)

H

b)

W

c)

C

d)

D

11.

Enzymes, as with all catalysts,

a)

Slow down a reaction at equilibrium

b)

Speed up a reaction at equilibrium

c)

Does not affect a reaction at equilibrium

d)

All of the above

12.

The end product of purine metabolism in humans is

a)

Allantoin

b)

Uric Acid

c)

Urea

d)

Ammonia

13.

Alcohol intoxication is usually treated with what vitamin?

a)

B1

b)

B2

c)

B3

d)

B5

14.

A type of antibody that plays an important role in allergic response

a)

IgA

b)

IgE

c)

IgG

d)

IgM

15.

Which of the following is true about glycolysis?

I. Phosphoglycerate kinase and Pyruvate kinase are enzymes that transfer high energy to ADP yielding ATP.

II. Conversion of Fructose-6-phosphate to Fructose 1,6 bisphosphate by the enzyme PFK-1 is the first committed step in glycolysis.

III. PFK-1 is an ATP producing enzyme.

a)

I only

b)

I and II only

c)

III only

d)

All of the above

16.

Increase insulin means _____ in glycolysis and decrease in glucagon means ____ in glycolysis.

a)

increase; decrease

b)

decrease; increase

c)

decrease; decrease

d)

Increase; increase

17.

A patient was delivered in the ER complaining a white cloudy vision. Laboratory exam results of the patient's intraocular fluid revealed presence of sandy white crystals. The patient has a deficiency of what enzyme?

a)

Fructase

b)

Sucrase

c)

Galactase

d)

Lactase

18.

DNA replication starts from what direction?

a)

3’-5’

b)

5’-3’

c)

3’-4’

d)

5’-4’

19.

Collagen is under what type of protein?

a)

Globular

b)

Fibrous

c)

Circular

d)

Filamentous

20.

Present in skin that serves as a precursor for Vitamin D3.

a)

4-dehydrocholesterol

b)

5-dehydrocholesterol

c)

6-dehydrocholesterol

d)

7-dehydrocholesterol