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Macro-molecules IA 1

Total questions: 28

Worksheet time: 24mins

Name
Class
Date
1.

What is the general structure of carbohydrate

a)

C5 H10 O5

b)

C H2 O

c)

C6 H6 O6

d)

C12 H22 O11

2.

Which of the following is a monosaccharide?

a)

Sucrose

b)

Starch

c)

Glucose

d)

Cellulose

3.

Glucose and fructose are examples of

a)

Enantiomers

b)

Diastereomers

c)

Anomers

d)

Structural isomers

4.

Which type of bond links monosaccharides to form diasaccharides?

a)

Peptide bonds

b)

Glycosidic bond

c)

Ester bond

d)

Phosphodiester

5.

Which polysaccharide serves as an energy storage molecule in animal?

a)

Cellulose

b)

Glycogen

c)

Chitin

d)

Amylose

6.

What is the main structural component of plant cell wall?

a)

Glycogen

b)

Starch

c)

Cellulose

d)

Chitin

7.

Which carbohydrate consists of beta 1-4 glycosidic bond?

a)

Glycogen

b)

Starch

c)

Sucrose

d)

Cellulose

8.

What is a reducing sugar?

a)

A sugar with no free aldehyde or ketone

b)

A sugar with free aldehyde or ketone

c)

Polysaccharide

d)

A sugar that cannot be oxidized.

9.

Which of these is not lipid?

a)

Cholesterol

b)

Glycogen

c)

Phospholipid

d)

Triglyceride

10.

What is the main characteristic of lipids?

a)

Hydrophilic

b)

Water insoluble

c)

Contains carbon and hydrogen

d)

Polymers

11.

What type of bonds connect the glycerol to fatty acids in the triglycerides?

a)

Peptide bonds

b)

Hydrogen bonds

c)

Glycosidic bond

d)

Ester bonds

12.

Which is a saturated fatty acid

a)

Oleic acid

b)

Linolenic

c)

Palmitic

d)

Arachidonic acid

13.

What is the role of cholesterol in the cell membrane?

a)

Energy transport

b)

Transport of protein

c)

Rigidity and stability

d)

Synthesis of hormone

14.

The most common lipid in the cell membrane is

(a)  

15.

The head of phospholipid is

a)

Hydrophobic

b)

Hydrophilic

c)

Non-polar

d)

Positively charged

16.

Which lipid is used to produce steroid hormone?

(a)  

17.

What are the monomers of proteins

(a)  

18.

………….structure of proteins indicates the amino acid sequences

(a)  

19.

What are the common forms of secondary structures of proteins

a)

Helix-Loop-helix

b)

Alpha Helix and beta sheet

c)

Double helix

d)

Pleated sheet only

20.

What type of structure is hemoglobin?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

21.

What is the function of chaperone proteins

a)

To assist protein degradation

b)

To synthesize proteins

c)

To assist in the folding of proteins

d)

To bind to carbohydrates

22.

What is the function of heat shock proteins

a)

To degrade proteins

b)

To synthesize proteins

c)

To assist in the folding of proteins

d)

To bind to carbohydrate

23.

What is the function of ubiquitinization of proteins

a)

To help degrade proteins

b)

To synthesize proteins

c)

To assist folding of proteins

d)

To activate or inactivate proteins

24.

What determines the function of a protein?

a)

The amino acid sequence and 3-D shape

b)

The carbohydrate modifications

c)

Its solubility in water

d)

Attachment to chaperone protein

25.

How are proteins classified

a)

Primary and secondary proteins

b)

Structural and functional proteins

c)

Structural and globular proteins

d)

Glycoproteins and lipoprotein

26.

Draw the structure of linoleic acid

27.

Draw to show the difference between glucose and mannose

28.

Briefly describe the synthesis of collagen

4 lines