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Chemical Composition of the Cell

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.
Which of this statement did not explain about the important of water?
a)
Water act as solvent
b)
Water used as medium for biochemical reaction
c)
Water help to maintenance of stable internal environment
d)
Water is low surface tension
2.
Which of this examples not belong to monosaccharide group?  
a)
Lactose
b)
Glucose
c)
Fructose
d)
Galactose
3.

What is the product when a molecule of sucrose is broken down by using one molecule of water?

a)

Glucose and glucose

b)

Glucose and fructose

c)

Glucose and galactose

d)

Fructose and galactose

4.

Which of the following is NOT an example of reducing sugar?

a)

Glucose

b)

Lactose

c)

Sucrose

d)

Galactose

5.

Which of the part did not belong to nucleotide?

a)

Nitrogenous base

b)

Amino group

c)

Phosphate group

d)

Pentose sugar

6.

Which of the following is true about the differences between DNA and RNA?

a)

DNA is double stranded while RNA is single stranded

b)

DNA has deoxyribose sugar while RNA has oxyribose

c)

Nitrogenous base in DNA are A,T,G and C while RNA are A, U, G and C.

d)

DNA contain in the nucleus only while RNA is in the cytoplasm only.

7.

What is the monomer for a protein?

a)

Nucleotide

b)

Galactose

c)

Fatty acid

d)

Amino acid

8.

Which of the following is not fat?

a)

Glycogen

b)

Steroid

c)

Phospholipid

d)

Wax

9.

Which of the following is true about saturated fat?

a)

Has one more double bond in a chain

b)

Solid at room temperature

c)

Liquid at room temperature

d)

Has low cholesterol

10.

What is the polymer for nucleic acid?

a)

Nucleotide

b)

Polynucleotide

c)

Polypeptide

d)

DNA

11.

Carbohydrate X is a type of simple sugar. It has sweet taste. It can reduce copper (II) ions in Benedict’s solution into copper (I) ions. It is a kind of monomer. What is X?

a)

Maltose

b)

Lactose

c)

Galactose

d)

Sucrose

12.

Based on the above diagram, what is the property of this molecule?

a)

Polar

b)

Non-polar

c)

Hydrophobic

d)

Neutral

13.

The equation below shows the breakdown process of disaccharides.

Maltose + Water → Glucose + Glucose


This reaction is called?

a)

Dialysis

b)

Condensation

c)

Hydrolysis

d)

Assimilation

14.

Which of the following answers is not the function of protein molecule within human body?

a)

Heat insulator

b)

Antibody maker

c)

Energy source

d)

Enzymes

15.

The conformation of a protein molecule can be destroyed by heat. It is called protein ________________.

a)

condensation

b)

damage

c)

termination

d)

denaturation