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Biochemistry Mid-term

Total questions: 100

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

The optical isomers which are the non-super imposable mirror images of each other thus possess chirality are called:

a)

Diastereomers

b)

Enantiomers

c)

Metamers

d)

Tautomers

2.

Any thing that occupies space and have mass is called:

a)

Atom

b)

Compound

c)

Element

d)

Matter

3.

Basic unit of matter is:

a)

Atom

b)

Compound

c)

Element

d)

Mixture

4.

It do not have specific shape but has volume:

a)

Atom

b)

Gas

c)

Liquid

d)

Solid

5.

Part of atom located outside the nucleus:

a)

Electron

b)

Proton

c)

Neutron

d)

Nucleus

6.

Part of atom that has negative charge.

a)

Electron

b)

Neutron

c)

Nucleus

d)

Proton

7.

Mixtures that have uniform composition are called:

a)

Elements

b)

Compoounds

c)

Heterogeneous mixtures

d)

Homogeneous mixtures

8.

The force of attraction that holds atoms together is called :

a)

Chemical bond

b)

Chemical equation

c)

Chemical formula

d)

Chemical symbol

9.

A chemical bond formed between two atoms by complete transfer of electron from one atom to another:

a)

Coordinated covalent bonds

b)

Covalent bonds

c)

Ionic bonds

d)

Polar covalent bonds

10.

A covalent bond in which one atom donates both of the electrons shared in a bond.

a)

Coordinated covalent bonds

b)

Ionic bonds

c)

Non-polar covalent bonds

d)

Polar covalent bonds

11.

Oxidation is:

a)

Gain of electrons

b)

Gain of hydrogen

c)

Loss of oxygen

d)

Loss of electron

12.

Reduction is:

a)

Gain of electrons

b)

Gain of oxygen

c)

Loss of electrons

d)

Loss of hydrogen

13.

Acid and base react to form:

a)

Metals

b)

Salt

c)

Salt and water

d)

Water

14.

A substance, which provides H+ ions in aqueous solution:

a)

Acid

b)

Base

c)

Buffer

d)

Indicator

15.

A substance, which provides OH- ions in aqueous solution:

a)

Acid

b)

Base

c)

Buffer

d)

Indicator

16.

A substance that resist change in pH:

a)

Acid

b)

Base

c)

Buffer

d)

Indicator

17.

CnH2n+2 is the general formula of:

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Aromatic compounds

18.

CnH2n is the general formula of :

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Aromatic compounds

19.

CnH2n-2 is the general formula of :

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Heterocyclic compounds

20.

Functional group alcohol is written as:

a)

– NH2

b)

– O –

c)

– OH

d)

– COOH

21.

Molecular formula of Ethane is:

a)

CH4

b)

C2H6

c)

C3H8

d)

C4H10

22.

It have specific shape and volume.

a)

BEC

b)

Gas

c)

Liquid

d)

Solid

23.

Mixtures that do not have uniform composition are called:

a)

Compound

b)

Element

c)

Heterogeneous mixture

d)

Homogeneous mixture

24.

Part of atom that does not have any charge.

a)

Electron

b)

Neutron

c)

Nucleus

d)

Proton

25.

A super cold and super unexited state of matter is:

a)

Bose Einstein Condensate

b)

Gas

c)

Liquid

d)

Solid

26.

A super hot and super excited state of matter is.

a)

Bose Einstein Condensate

b)

Liquid

c)

Plasma

d)

Solid

27.

A chemical bond in which atoms share electrons is called:

a)

Co-ordinate Covalent bond

b)

Covalent bond

c)

Dative bond

d)

Ionic bond

28.

It turns phenolphthalene colorless.

a)

Acid

b)

Base

c)

Buffer

d)

PH scale

29.

Organic compounds that have aroma are called:

a)

Alkane

b)

Alkene

c)

Alkyne

d)

Aromatic

30.

Normal PH range of blood is:

a)

0-14

b)

1-7

c)

7.35-7.45

d)

7-14

31.

Nitrogen containing functional include is:

a)

Alcohol

b)

Amine

c)

Ester

d)

Ether

32.

Substance that undergoes a chemical reaction is called:

a)

Reactant

b)

Intermediate

c)

Product

d)

Chemical bond

33.

Substance that is formed by a chemical reaction is called:

a)

Reactant

b)

Intermediate

c)

Product

d)

Chemical bond

34.

Chemical reaction in which two or more substances combine to form product is:

a)

Combination reaction

b)

Decomposition reaction

c)

Redox reaction

d)

Reversible reaction

35.

The symbol of sodium is:

a)

N

b)

Na

c)

Ne

d)

Ni

36.

The range of PH scale is:

a)

0-14

b)

1-14

c)

0-6

d)

1-7

37.

Components of Carbonic acid-Bicarbonate buffer system include:

a)

Carbonic acid and bicarbonate

b)

Dihydrogen phosphate and monohydrogen phosphate

c)

Hemoglobin

d)

Protein

38.

It do not have specific shape and volume:

a)

Atom

b)

Gas

c)

Liquid

d)

Solid

39.

The tendency of atom to attract a shared pair of electron towards itself is called:

a)

Chemical bond

b)

Dative bond

c)

Electronegativity

d)

Ionic bond

40.

Polar covalent bond has which charge?

a)

Negative charge

b)

No charge

c)

Partial Positive and Partial Negative charge

d)

Positive charge

41.

A substance that is oxidized by reducing other substance is called:

a)

Oxidation

b)

Oxidizing agent

c)

Reduction

d)

Reducing agent

42.

Carbohydrates are abbreviated as CHO, because they contain:

a)

Carbon, Hydrogen, Oxygen

b)

Hydrogen, Nitrogen, Oxygen

c)

Oxygen, Nitrogen, Carbon

d)

Sodium, Hydrogen, Oxygen

43.

Monosaccharides, that contain aldehyde functional group are called:

a)

Aldoses

b)

Ketoses

c)

Lactose

d)

Maltose

44.

The ring structure of monosaccharides that have six members, i.e. five carbons and one oxygen molecule:

a)

Furanose

b)

Hemiacetal

c)

Hemiketal

d)

Pyranose

45.

The ring structure of monosaccharides that have ketone functional group is:

a)

Furanose

b)

Hemiacetal

c)

Hemiketal

d)

Pyranose

46.

The combination of two glucose units forms:

a)

Fructose

b)

Lactose

c)

Maltose

d)

Sucrose

47.

The compounds that contain polyhydroxyl aldehyde or polyhydroxyl ketone are called:

a)

Carbohydrates

b)

Lipids

c)

Nucleic acids

d)

Proteins

48.

Monosaccharides, that contain ketone functional group are called:

a)

Aldoses

b)

Ketoses

c)

Lactose

d)

Maltose

49.

The ring structure of monosaccharides that have five members, i.e. four carbons and one oxygen molecule:

a)

Furanose

b)

Hemiacetal

c)

Hemiketal

d)

Pyranose

50.

The ring structure of monosaccharides that have aldehyde functional group is:

a)

Furanose

b)

Hemiacetal

c)

Hemiketal

d)

Pyranose

51.

The combination of glucose and fructose forms:

a)

Glycogen

b)

Lactose

c)

Maltose

d)

Sucrose

52.

The combination of glucose and galactose forms:

a)

Lactose

b)

Maltose

c)

Starch

d)

Sucrose

53.

Starch is a:

a)

Disaccharide

b)

Monosaccharide

c)

Oligosaccharide

d)

Polysaccharide

54.

If the position of OH group of an anomeric carbon is at the left hand in straight chain and above the plane of ring it is called:

a)

α-Anomer

b)

β-Anomer

c)

Oligosaccharide

d)

Polysaccharide

55.

If the position of OH group of an anomeric carbon is at the right hand in straight chain and below the plane of ring it is called:

a)

α-Anomer

b)

β-Anomer

c)

Anomeric carbon

d)

Ketoses

56.

Cellulose is a:

a)

Disaccharide

b)

Oligosaccharide

c)

Heteropolysaccharide

d)

Homopolysaccharide

57.

It is Heteropolysaccharide:

a)

Cellulose

b)

Glycogen

c)

Hyaluronic acid

d)

Starch

58.

Maltose is formed by:

a)

α-1, 4 glycosidic linkage

b)

α -1, 2 glycosidic linkage

c)

β -1, 4 glycosidic linkage

d)

Peptide bond

59.

Lactose is formed by:

a)

α-1, 4 glycosidic linkage

b)

α-1, 2 glycosidic linkage

c)

β-1, 4 glycosidic linkage

d)

Ester linkage

60.

Sucrose is formed by:

a)

α-1, 2 glycosidic linkage

b)

α-1, 4 glycosidic linkage

c)

β-1, 4 glycosidic linkage

d)

Hydrogen bond

61.

Number of carbon in hexoses:

a)

3

b)

4

c)

5

d)

6

62.

It is a hexoses sugar:

a)

Erythrose

b)

Erythulose

c)

Fructose

d)

Ribose

63.

The building block of lipid is:

a)

Amino acid

b)

Fatty acid

c)

Monosaccharides

d)

Proteins

64.

Fatty acids that must be taken in diet are:

a)

Essential fatty acids

b)

Non-Essential fatty acids

c)

Saturated fatty acids

d)

Unsaturated fatty acids

65.

It provides protective cushion to our vital organs:

a)

Carbohydrates

b)

Hormones

c)

Lipids

d)

Proteins

66.

Lipids that have ability to form soap are referred as:

a)

Nonsaponifiable lipids

b)

Nonsterols

c)

Saponifiable lipids

d)

Sterols

67.

Basic ring structure of sterols is:

a)

Cholesterol

b)

Cyclo-pentano-hydrophenenthrene ring

c)

Ergosterol

d)

Stigmasterol

68.

Animal sterol is called:

a)

Mycosterol

b)

Non-sterol

c)

Phytosterol

d)

Zoosterol

69.

VLDL stands for:

a)

Chylomicrons

b)

Very low density lipoproteins

c)

Low density lipoproteins

d)

High density lipoproteins

70.

Bad Cholesterol is:

a)

Chylomicrons

b)

Very low density lipoproteins

c)

Low density lipoproteins

d)

High density lipoproteins

71.

The building block of proteins is:

a)

Amino acids

b)

Eicosanoids

c)

Fatty acid

d)

Monosaccharides

72.

The state of amino acid which carry both positive and negative charge together is:

a)

Amino acid

b)

Anion

c)

Cation

d)

Zwitterion

73.

Round shaped proteins are:

a)

Elastic proteins

b)

Fibrous proteins

c)

Globular proteins

d)

Inelastic proteins

74.

Structure of proteins that is made by aggregates of two or more protein chain is referred as:

a)

Primary structure

b)

Quaternary structure

c)

Secondary structure

d)

Simple proteins

75.

Prosthetic group in glycoprotein is:

a)

Carbohydrate

b)

Lipid

c)

Nucleic acid

d)

Sulfur

76.

Defense proteins include:

a)

Actin

b)

Elastin

c)

Enzymes

d)

Immunoglobulin

77.

Gene regulatory proteins include:

a)

Hemoglobin

b)

Histones

c)

Immunoglobulin

d)

Interferon

78.

Fatty acids that have single covalent bonds are called:

a)

Essential fatty acids

b)

Non-Essential fatty acids

c)

Saturated fatty acids

d)

Unsaturated fatty acids

79.

Fatty acids that have one or more double covalent bonds are called:

a)

Essential fatty acids

b)

Non-Essential fatty acids

c)

Saturated fatty acids

d)

Unsaturated fatty acids

80.

Fatty acids that are formed in body and thus are not necessary to be taken in diet are:

a)

Essential fatty acids

b)

Non-Essential fatty acids

c)

Saturated fatty acids

d)

Unsaturated fatty acids

81.

Cholesterol is:

a)

Mycosterol

b)

Non-sterol

c)

Phytosterol

d)

Zoosterol

82.

Prosthetic group in sulfolipid is:

a)

Carbohydrate

b)

Phosphate

c)

Protein

d)

Sulfur

83.

Positively charged state of amino acid is:

a)

Anion

b)

Cation

c)

Hybrid ion

d)

Zwitterion

84.

Negatively charged state of amino acid is:

a)

Anion

b)

Cation

c)

Hybrid ion

d)

Neutral ion

85.

Amino acids that must be taken in diet are called:

a)

Aliphatic amino acids

b)

Essential amino acids

c)

Non-Esential amino acids

d)

Polar amino acids

86.

Amino acids that are synthesized by body thus are not necessary to be taken in diet are:

a)

Essential amino acids

b)

Polar amino acids

c)

Non-Essential amino acids

d)

Non-Polar amino acids

87.

Amino acids that are soluble in water:

a)

Aliphatic amino acids

b)

Essential amino acids

c)

Ketogenic amino acids

d)

Polar amino acids

88.

LDL stands for:

a)

Chylomicrons

b)

High density lipoprotein

c)

Low density lipoprotein

d)

Very Low density lipoprotein

89.

Contractile proteins include:

a)

Actin, myosin

b)

Albumin, transferin

c)

Immunoglobulin, interferon

d)

Insulin, growth hormone

90.

It transport cholesterol to extra-hepatic tissues:

a)

Chylomicron

b)

HDL

c)

LDL

d)

VLDL

91.

It transport cholesterol from extra-hepatic tissues back to liver:

a)

Chylomicron

b)

HDL

c)

LDL

d)

VLDL

92.

It is not a classification of proteins on the basis of structure:

a)

Conjugated protein

b)

Primary structure

c)

Quaternary structure

d)

Secondary structure

93.

Acid react with carbonate and bicarbonate to form:

a)

Salt

b)

Salt and water

c)

Salt, water, and carbondioxide gas

d)

Water

94.

Components of Phosphate buffer system include:

a)

Carbonic acid and bicarbonate

b)

Dihydrogen phosphate and monohydrogen phosphate

c)

Hemoglobin

d)

Protein

95.

Proton and neutron are located in:

a)

Electron

b)

Gluans

c)

Nucleus

d)

Quarks

96.

A substance that donate a proton is called a/an:

a)

Acid

b)

Base

c)

Buffer

d)

Indicator

97.

A substance that donate a pair of electron is called a/an:

a)

Acid

b)

Base

c)

Buffer

d)

Indicator

98.

It transport cholesterol from extra-hepatic tissues back to liver:

a)

Chylomicron

b)

HDL

c)

LDL

d)

VLDL

99.

Substances that have same molecular formula but different structures are called:

a)

Functional group isomers

b)

Metamers

c)

Structural isomers

d)

Tautomers

100.

A type of chemical formula that shows actual number of atoms present in a molecule is called:

a)

Condensed structural formula

b)

Empirical formula

c)

Molecular formula

d)

Structural formula