Free Printable Biology Unit 2 Test

1.

The most abundant organic compound to be found in nature is:

a)

Proteins

b)

Carbohydrates

c)

Lipids

d)

Water

2.

___________ is the basic amino acid and act as an inhibitory amino acid.

a)

Water

b)

Ribose

c)

Glucose

d)

Glycine

3.

Select which ha 99% water in it.

a)

Nerve cells

b)

Brain cells

c)

Jelly fish

d)

Blood plasma

4.

The type of chemical reaction which correctly justifies the synthesis of cellulose is:

a)

Hydrolysis

b)

Condensation

c)

Decarboxylation

d)

Reduction

5.

Which of the following is a linear polymer?

a)

Terpenoids

b)

Nucleic acid

c)

Polysaccharides

d)

Proteins

6.

The ring structure formed by glucose molecule is:

a)

4 cornered

b)

5 cornered

c)

6 cornered

d)

7 cornered

7.

Monosaccharides are major components of:

a)

DNA, ATP, ribulose bisphosphate and cysteine

b)

DNA, NADP, ATP and ribulose bisphosphate

c)

DNA, NAD and Insulin

d)

DNA, RNA and myosin

8.

The types of polysaccharides which can be stored respectively in plants and animals are:

a)

Starch and Cellulose

b)

Glycogen and Cellulose

c)

Starch and Glycogen

d)

Glycogen and Starch

9.

________________is the most abundant carbohydrate in nature.

a)

Cellulose

b)

Dextrin

c)

Chitin

d)

Starch

10.

It is an example of keto-triose to be produce by the splitting of fructose 1,6-bisphosphate during glycolysis:

a)

Glyceraldehyde

b)

Ribose

c)

Dihydroxyacetone

d)

Xylulose

11.

Identify the type of carbohydrates which has high molecular weight and sparingly soluble in water:

a)

Monosaccharide

b)

Oligosaccharides

c)

Disaccharides

d)

Polysaccharides

12.

1,4-glycosidic linkage is found in all of the following carbohydrates except:

a)

Sucrose

b)

Maltose

c)

Lactose

d)

Amylose

13.

Which of the following group is specialized for providing specific properties to an amino acid?

a)

Amino group

b)

Carboxyl group

c)

Alpha carbon

d)

R-group

14.

The number of amino acids that have been found to occur in cells and tissues are:

a)

170

b)

25

c)

20

d)

45

15.

A protein molecule is related to all of the following except:

a)

Homopolymer

b)

Polypeptide

c)

Heteropolymer

d)

Peptide bond formation

16.

From the following options, identify an example of phospholipids:

a)

Palmitic acid

b)

Butyric acid

c)

Lecithin

d)

Phosphatidic acid

17.

Cuticle is an example of:

a)

Acylglycerols

b)

Waxes

c)

Phospholipids

d)

Terpenoids

18.

The hormones of adrenal cortex and gonads belong to:

a)

Terpenoids

b)

Diacyglycerol

c)

Glycolipds

d)

Tyrosine

19.

It is not a chemical component of lecithin molecule:

a)

Isoprenoid

b)

Fatty acids

c)

Glycerol

d)

Phosphate group and chline

20.

What are the features of triglycerides?

a)

A

b)

B

c)

C

d)

D

21.

Which of the following holds the alpha helix of protein in its place?

a)

Hydrogen bond

b)

R-group

c)

Amino group

d)

Disulphide bond

22.

The most abundant extracellular protein to be found in animal world is:

a)

RuBisCO

b)

Myosin

c)

Collagen

d)

Albumin

23.

Which of these is not significant to maintain quaternary structure of proteins?

a)

Peptide bonds

b)

Hydrogen bonds

c)

Ionic bonds

d)

Hydrophobic interactions

24.

The combination of a pentose sugar with a base result in a compound known as:

a)

Nucleotide

b)

Polynucleotide

c)

Nucleoside

d)

Nucleic Acid

25.

Phosphodiester bond is:

a)

P—O—C—P—O—C

b)

C—O—P—O—C

c)

C—O—P

d)

C—N—C—O—P

26.

Which one is an example of a nucleotide?

a)

Adenosine

b)

Guanine

c)

ATP

d)

NAD+

27.

All of the following molecules are directly synthesized from DNA except:

a)

DNA

b)

tRNA

c)

Protein

d)

mRNA

28.

It is the usual mode of flow of molecular information within the cells:

a)

DNA → Ribosome → Protein

b)

DNA → rRNA → Protein

c)

DNA → tRNA → Protein

d)

DNA → mRNA → Protein

29.

Most of the cellular secretions are ___________ in nature.

a)

Glycoprotein

b)

Nucleolipid

c)

Glycolipid

d)

Nucleohistone

30.

___________ play an important role in regulation of gene expression.

a)

Glycoprotein

b)

Nucleolipid

c)

Glycolipid

d)

Nucleohistone

31.

Enzymes increase the rate of reaction by:

a)

Increasing Temperature

b)

Decreasing Activation Energy

c)

Decreasing pH

d)

Increasing Activation Energy

32.

All of the following correctly describe the active site of an enzyme except:

a)

It is small relative to the entire enzyme

b)

It is two dimensional in structure

c)

Specificity is defined by arrangement of certain atoms

d)

It initially binds substrates by weak attractions

33.

The non-protein part of enzyme which is covalently and permanently bonded is called:

a)

Prosthetic group

b)

Co-Enzyme

c)

Co-Factor

d)

Activator

34.

In an insulin molecule, the polypeptide chains are held together by:

a)

Peptide bond

b)

Disulphide bridges

c)

Hydrogen bond

d)

Ionic interaction

35.

If a protein molecule having two polypeptide chains and 990 amino acids, then how many types of nucleotides are involved in the coding of such number of amino acids?

a)

4

b)

988

c)

5

d)

990

36.

The structure of a fibrous protein comprises of polypeptide chains in the form of:

a)

Cluster

b)

Spherical or curled up ball

c)

Flat uncoiled chains

d)

Long strands or fibrils

37.

All of the following are included in lipids except:

a)

Fatty acids

b)

Terpenoids

c)

Sphingolipids

d)

Chitin

38.

Acylglycerols like fats and oils are esters formed by condensation reaction between:

a)

Fatty acids and water

b)

Fatty acids and glucose

c)

Fatty acids and alcohols

d)

Fatty acids and phosphates

39.

A fatty acid is unsaturated if it contains double bond between:

a)

Carbon and hydrogen

b)

Carbon and oxygen

c)

Carbon and carbon

d)

Oxygen and oxygen

40.

Specific properties of tail in phospholipid molecule is due to:

a)

Glycerol

b)

Phosphate group

c)

Fatty acid

d)

Nitrogenous base

Biology Unit 2 Test

Total questions: 40

Worksheet time: 3600secs

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