Free Printable Biochemistry Review

1.

a)

A

b)

B

c)

C

d)

D

2.

1) Which of the following is NOT one of the 4 major organic molecules found in living things?

a) Nucleic Acids

b) Proteins

c) Carbohydrates

d) Water

a)

A

b)

B

c)

C

d)

D

3.

a)

A

b)

B

c)

C

d)

D

4.

1) What is the name of the biological substance that speeds up chemical reactions?

a) cellulose

b) lipid

c) enzyme

d) sugar

a)

A

b)

B

c)

C

d)

D

5.

a)

A

b)

B

c)

C

d)

D

6.

When does hydrolysis occur?

a) When two molecules bond together

b) When chemical bonds are broken

c) When two molecules share electrons

d) When hydrogen bonds are formed

a)

A

b)

B

c)

C

d)

D

7.

Polymerization requires the formation of ____ bonds.

a) metallic

b) covalent

c) ionic

d) Hydrogen

a)

A

b)

B

c)

C

d)

D

8.

a)

A

b)

B

c)

C

d)

D

9.

What is the bond that connects water molecules to each other

a) Covalent bond

b) Hydrogen bond

c) Ionic bond

d) Hydrophobic bond

a)

A

b)

B

c)

C

d)

D

10.

Water droplets sticking to a window after a rainfall is an example of what water property?

a) Cohesion

b) Capillary action

c) Adhesion

d) Surface tension

a)

A

b)

B

c)

C

d)

D

11.

What molecules dissolve BEST in water?

a) Non-polar

b) Partially polar, partially non-polar

c) Water cannot dissolve any molecules

d) Polar

a)

A

b)

B

c)

C

d)

D

12.

What words best describe the charge of the oxygen atoms in a water molecule

a) Partially Positive

b) Partially Negative

c) Negative

d) Positive

a)

A

b)

B

c)

C

d)

D

13.

What is the main function of a carbohydrate?

a) Creating cell membranes

b) Building blocks of proteins

c) Energy storage

d) Genetic material

a)

A

b)

B

c)

C

d)

D

14.

Which of the following processes is used when polymers are broken down to monomers?

a) Hydrolysis

b) Heat synthesis

c) Dehydration synthesis

d) Photosynthesis

a)

A

b)

B

c)

C

d)

D

15.

a)

A

b)

B

c)

C

d)

D

16.

a)

A

b)

B

c)

C

d)

D

17.

A student from the life science class block B was asked to give 3 claims about the unit of carbohydrates:

Claim 1 : Another name for sugar is ‘saccharide’.

Claim 2 : Polysaccharides are chains composed of monosaccharides.

Claim 3 : Polysaccharides contain the code for gene expression.

Which of the claims are correct?

a) 1, 2

b) 2, 3

c) 1, 3

d) None of the above claim is correct.

a)

A

b)

B

c)

C

d)

D

18.

What is true about saturated fats?

A. Saturated fats have no double bonded carbon in its fatty acid tail.

B. Saturated fats have one or more double bonded carbon in its fatty acid tail.

C. Saturated fats are liquid at room temperature.

D. Olive oil is an example of a saturated fat.

a)

A

b)

B

c)

C

d)

D

19.

What is NOT a function of a lipid

a. Insulation

b. Energy

c. Make up cell membranes

d. Create chromosomes

a)

A

b)

B

c)

C

d)

D

20.

What is the lab test for detecting lipids?

a. Benedict’s test

b. Sudan test

c. Biuret test

d. Iodine test

a)

A

b)

B

c)

C

d)

D

21.

The main source of energy of the cell is ______

a) Glucose

b) Fatty acid

c) Protein

d) Phospholipids

a)

A

b)

B

c)

C

d)

D

22.

a)

A

b)

B

c)

C

d)

D

23.

Which of the following is NOT a Protein’s function?

A. Structural (Muscle, skin, hair)

B. Signaling (Hormones)

C. Immunity (Antibodies)

D. Synthesizes the cell wall

a)

A

b)

B

c)

C

d)

D

24.

a)

A

b)

B

c)

C

d)

D

25.

a)

A

b)

B

c)

C

d)

D

26.

Which of the following is not included in the general structure of Amino Acids?

A. Amino (NH₂)_group

B. Carboxyl (-COOH) group

C. Polypeptide group

D. Variable (R) group

a)

A

b)

B

c)

C

d)

D

27.

What result indicates the presence of starch?

A. purple/black

B. orange/light brown

C. purple

D. red

a)

A

b)

B

c)

C

d)

D

28.

a)

A

b)

B

c)

C

d)

D

29.

What is an important factor that determines the function of a protein?

A.Shape

B.Size

C. Length

D.Width

a)

A

b)

B

c)

C

d)

D

30.

What change represents the presence of protein in Biuret reaction?

A. Orange -> Purple

B. Light blue-> orange

C. Light blue-> purple

D. Dark pink-> light pink

a)

A

b)

B

c)

C

d)

D

31.

a)

A

b)

B

c)

C

d)

D

32.

a)

A

b)

B

c)

C

d)

D

33.

a)

A

b)

B

c)

C

d)

D

34.

Identify the enzyme in the model below:

a)

A

b)

B

c)

C

d)

D

35.

Identify the structure labeled ?

a)

Dehydration site

b)

Hydrolysis site

c)

Active site

d)

Production site

Biochemistry Review

Total questions: 35

Worksheet time: 17mins

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