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CHEMISTRY > UNIT#19 MACROMOLECULES > Flashcards

UNIT#19 MACROMOLECULES Flashcards

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1
Q

Zigzag and regular coiling of polypeptide linkage forms:

A

Secondary Structure

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2
Q

The hydrogen bond in the secondary structure of a protein is present in between:

A

O-H

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3
Q

Primary structure of proteins shows:

A

The sequence of amino acids

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4
Q

Which of the following statement is false about protein:

A

➡Peptide bond is a covalent bond❌
➡It is a polyamide❌
➡It contains a different sequence of amino acids in other proteins❌
➡Primary structure is due to hydrogen bonds ✅

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5
Q

Which one o the following structure of a protein is the direct consequence of hydrogen bonding:

A

Secondary

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6
Q

The primary structure o protein arises due to which force

A

Covalent Bond

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7
Q

The secondary structure of protein includes:

A

➡α-helix
➡β-Sheets

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8
Q

This is true about primary structure:

A

Result o translation

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9
Q

Which is not present in α-helix:

A

Disulphide Linkage

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10
Q

Which carbon of amino acids bond to nitrogen of another in peptide linkage:

A

Carbonyl Carbon

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11
Q

All proteins yield ____ upon complete hydrolysis.

A

Amino acids

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12
Q

Protein attached to some non-protein group is called:

A

Conjugated Protein

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13
Q

Regular coiling or zigzagging o polypeptide through hydrogen bonding is its:

A

Secondary Structure

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14
Q

What common name can be given to lipids, proteins, carbohydrates and nucleic acid polymers?

A

Bio-polymers

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15
Q

Which one of the following polymers has peptide linkage in it?

A

Nylon 6,6

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16
Q

Which factor cannot denature the protein:

A

Dissolving in H2O

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17
Q

Which of the following elements is not present in all proteins:

A

Sulphur

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18
Q

Enzymes that catalyze the transfer of groups within molecules are called:

A

Isomerases

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19
Q

The enzyme used for the treatment of blood cancer in children is;

A

L-asperginase

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20
Q

Enzymes of the same organism which catalyze the same reaction but are chemically and physically distinct from each other are called:

A

Isoenzymes

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21
Q

The rate of enzymatic reaction is directly proportional to the concentration of:

A

Substrate

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22
Q

The rate of reaction is directly proportional to:

A

√[Enzyme]

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23
Q

The substrate binds with the enzyme at:

A

Active Site

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24
Q

Many enzymes contain a protein part and a non-protein part, the non-protein part is called:

A

➡Coenzyme
➡Cofactors

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25
Q

The group of compounds that is primarily responsible for the building of the body of an animal and its maintenance is called:

A

Proteins

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26
Q

Which enzyme is used to catalyze the addition of ammonia, water or carbon dioxide to double bond:

A

Phospho-glyceromutases

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27
Q

The activator for chrome oxidase is:

A

Fe+2

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28
Q

Thrombin is used:

A

Locally to stop bleeding

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29
Q

For the treatment of blood cancer in children ___ enzyme has proved very useful:

A

L-asparaginase

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30
Q

The protein part of the enzyme is called:

A

Apoenzyme

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31
Q

After digestion protein change into;

A

Amino acids

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32
Q

Nucleoproteins are ___ proteins which transfer heredity information from one generation to another.

A

Genetic Proteins

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33
Q

In which of the following body part, protein is not present?

A

Bones

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34
Q

Protein is a polymer of :

A

Amino acids

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35
Q

Globulins protein upon hydrolysis yield amino acids or their derivatives, so they belong to which type of protein.

A

Simple Proteins

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36
Q

Regular coiling and twisting of polypeptide chain caused by H-bonding in between NH and CO occur:

A

Secondary Structure

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37
Q

The substances which reduce the activity of enzyme action are called:

A

Inhibitors

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38
Q

Which enzyme is raised in rickets;

A

Alkaline phosphatase

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39
Q

The specific site at which substrate is attached to the enzyme and converted into the product is called;

A

Substrate

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40
Q

Which of the following is produced during the heat of bones?

A

Gelatin

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41
Q

Casein is used in the manufacturing of:

A

➡Buttons
➡Buckles

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42
Q

_____ enzyme catalyzes the conversion o hexones to a 6-phosphate derivative.

A

Hexokinase

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43
Q

Urease is present in;

A

Soya Bean

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44
Q

Carboxylase are an example of which type of enzyme;

A

Ligases

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45
Q

Coagulated proteins are;

A

➡Non-Soluble
➡Non-Functional
➡Non-Folded

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46
Q

Nylon 6,6 is a:

A

Polyamide

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47
Q

Pesticides and insecticides are made of:

A

Organic Compound

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48
Q

Number of polymers on basis of monomers;

A

3

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49
Q

LDH-1 is used in the treatment of Rickets;

A

Heart Disease

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50
Q

The enzyme binds with the substrate to form:

A

Enzyme Substrate Complex

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51
Q

Which is an inorganic macromolecule;

A

Diamond

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52
Q

Which of these is a synthetic polymer?

A

Polyester

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53
Q

Which 1 is correct about polymer(plastic)?

A

➡Poly(propene) can be softened on heating

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54
Q

How many types o polymers on the basis of structure:

A

Three

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55
Q

An enzyme without a co-enzyme is called;

A

Apoenzyme

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56
Q

Staudinger proposed long chain formula for:

A

➡Rubber
➡Polystyrene
➡Polyoxy methylene

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57
Q

Most abundant macromolecule on earth;

A

Carbohydrates

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58
Q

Which of the following is an additional polymer

A

PVC

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59
Q

Linkage in the primary structure of a protein;

A

Peptide Linkage

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60
Q

Protein is made of;

A

Amino acids

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61
Q

Addition polymerization occurs through ___ mechanism

A

➡Free-Radical
➡Cationinc
➡Anionic

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62
Q

Which of the following is an example of a thermosetting polymer?

A

➡Epoxy resins
➡Synthetic varnish
➡Bakelite

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63
Q

Which is not an inorganic macromolecule.

A

➡Synthetic Fibre✅
➡Diamond❌
➡Graphite❌
➡Sand❌

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64
Q

Coagulated protein is ____ protei.

A

➡Non-Soluble
➡Non-Functional
➡Solid

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65
Q

In which polymers on heating instead of melting break down:

A

➡Thermosetting

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66
Q

Collagen and albumin are:

A

Simple Proteins

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67
Q

A polymer in which the number of amino acids residues is greater than 100 or the molecular mass is greater than 10,000 is called;

A

Protein

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68
Q

Macromolecules are described as large molecules built up from small repeating units called:

A

Monomers

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69
Q

Phosphoprotein comes under the type of proteins:

A

Conjugated

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70
Q

The role of a catalyst in a chemical reaction is to

A

Increase the rate of reaction

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71
Q

Glucose is converted into ethanol by the enzyme present in the yeast:

A

Zymase

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72
Q

The proteins which give amino acid and non-protein groups on hydrolysis are known as:

A

Conjugated Protein

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73
Q

The enzyme found in saliva that accelerates the conversion of starch into sugar is:

A

Ptyalin

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74
Q

Which o the following bond is responsible for joining the amino acids in proteins?

A

Peptide Bond

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75
Q

Based on the Physico-chemical properties, proteins may be classified into the following types:

A

➡Simple Proteins
➡Compound Proteins
➡Derived Proteins

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76
Q

Based on function, thyroxin can be classified as:

A

Hormonal Protein

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77
Q

L-asparaginase enzymes have been used for the treatment of:

A

Blood Cancer

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78
Q

The helical structure of a protein is stabilized by:

A

Hydrogen Bonds

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79
Q

Which one of the following enzymes brings about the hydrolysis of fats?

A

Lipase

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80
Q

Denaturation of protein does not have any effect on its:

A

Primary Structure

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81
Q

The bond that determines the secondary structure of a protein is:

A

Hydrogen bond

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82
Q

Which is the optimum pH for the activity of enzyme salivary amylase:

A

6.4 to 6.9

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83
Q

Collage and albumin are:

A

Simple Proteins

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84
Q

Collagen proteins are present in ____ throughout the body

A

➡Skin
➡Tendons
➡Ligaments

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85
Q

The -NH-CO is called;

A

Peptide Linkage

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86
Q

Collage is a fibrous protein present most abundantly in:

A

Tendons

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87
Q

Polyamide is formed due to condensation of hexane-dioic acid with:

A

Hexane-1,6-diamine

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88
Q

The specific substances (metabolite) that fit on the enzyme surface and are converted to products are called:

A

Substrate

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89
Q

Two or more amino acids are condensed to form protein by a peptide linkage which is present between two atoms:

A

C and C

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90
Q

The organic compounds containing both the amino and the carboxyl group are called;

A

Amino acids

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91
Q

The amino group in amino acids can be attached to any carbon other than:

A

Carbonyl Carbon

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92
Q

Building blocks of proteins are:

A

Amino acids

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93
Q

Aspartic acid is an amino acid but its nature is:

A

Acidic

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94
Q

Histidine is an amino acid but its nature is:

A

Basic

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95
Q

Alanine is an amino acid but its nature is:

A

Neutral

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96
Q

All alpha amino acids exist largely in proteins in the form of a dipolar structure called;

A

Zwitter ion

97
Q

The dipolar structure of α-amino acids is also called;

A

Internal Salt

98
Q

In the formation of the Zwitter ion, the proton from the carboxyl group goes and gets attached to the:

A

Amino group Nitrogen

99
Q

The basic character of amino acids is largely due to:

A

Carboxylate on

100
Q

The acidic character of amino acids is due to:

A

Amino group

101
Q

The amino acids that are synthesized within our body naturally are called;

A

Non-essential amino acids

102
Q

The amino acids that are not created within our body and are required to be taken up through our diet are:

A

Essential amino acids

103
Q

Which of the following can differ in different amino acids:

A

R group

104
Q

When two amino acids are condensed releasing a water molecule, the HN-C=O linkage thus formed is called;

A

Peptide Linkage

105
Q

Which of the following amino acid is achiral?

A

Glycine

106
Q

An example of Sulphur containing amino acid is:

A

➡️Cysteine
➡️Methionine

107
Q

The α-amino acid which contains an aromatic side chain is:

A

Tyrosine

108
Q

Peptides are formed from:

A

α-amino acids

109
Q

Lack of essential amino acids in the diet leads to the disease:

A

Kwashiorkor

110
Q

Which of the following amino acid is optically inactive

A

Glycine

111
Q

A nano peptide contains ____ peptide linkages.

A

8

112
Q

Strecker reaction is used for the synthesis of:

A

Amino acid

113
Q

Which of the following compound exist as dipolar ions:

A

Amino acid

114
Q

Which of the following test is used to identify the amino acids?

A

Ninhydrin Test

115
Q

When α-Bromo acids react with ____ they produce amino acids.

A

NH3

116
Q

A polypeptide having molecular mass up to:

A

10,000

117
Q

A peptide having a molecular mass of more than 10,000 is called:

A

Protein

118
Q

The naturally occurring amino acids are;

A

α-amino acids

119
Q

Which functional group participates in disulphide bond formation in protein;

A

Thiol

120
Q

Lactic acid is obtained by which of the following reaction:

A

Alanine + HNO2

121
Q

Amino acids are only produced?

A

In the high amount of catalytic amount of strong acid

122
Q

In which media Zwitter ion can exist?

A

Aqueous HCl

123
Q

In aqueous media that contains alanine and HCl, the distribution of charges are:

A

Cation > Anion

124
Q

Proteins are macromolecules that mostly contain;

A

A single type of chain length between two consecutive peptide bonds

125
Q

What is the pH range for the existence of Zwitter on:

A

7.3-10.8

126
Q

Which type of reaction is not anticipated for an amino acid

A

Reaction with CO2

127
Q

What is the relationship between the acidic strength of succinic acid and aspartic acid

A

Succinic acid > Aspartic acid

128
Q

Which statement is wrong about glutamic acid

A

➡Carboxyl group at position 1 is more acidic than other carboxyl groups✅
➡Both carboxyl groups are of the same strength❌
➡It’s Zwitter ion is neither acid nor non-basic❌

129
Q

Which of the following amino acids is present in humans but is not involved in protein synthesis?

A

➡Histidine❌
➡Proline❌
➡GABA✅
➡Cysteine❌

130
Q

Which of the following is not an aliphatic amino acid?

A

Tyrosine

131
Q

Which of the following amino acid is an aromatic and basic amino acid?

A

Histidine

132
Q

Which of the following can be obtained by introduction of the amino group to one of the carbons of succinic acid

A

Aspartic acid

133
Q

Which of the following is obtained by replacing the -OH group of lactic acid with the -NH2 group?

A

Alanine

134
Q

Which of the following is not present in histidine?

A

Vinyl Group

135
Q

Which of the following doesn’t contain primary amino?

A

Proline

136
Q

Which of the following contains a hydroxyl group?

A

Serine

137
Q

Which of the following doesn’t react with ninhydrin?

A

Proline

138
Q

Proline doesn’t react with ninhydrin because:

A

It doesn’t contain primary amino

139
Q

Which of the following contain two acidic -NH3+, groups in aqueous media

A

Lysine

140
Q

Which type of amino acid is always non-essential

A

Acidic

141
Q

Protein is ___ polymer.

A

Condensation

142
Q

Ninhydrin reacts with amino acid and the product is formed that contains ____ linkage

A

Imine

143
Q

Which of the following statement is correct about Zwitter ion?

A

It is not an ion and it contains both +ve and -ve charges

144
Q

In a solution of CH3COOH and CH3COONa with the same molarity, alanine exists in the form o ___ ion.

A

Cation

145
Q

In a solution of NH4OH and NH4Cl with the same molarity, glycine exists in the form of:

A

Anion

146
Q

When aspartic acid is added in excess a/base. It exists as a:

A

Di-Negative ion

147
Q

In excess of acid how many H+ ions can be accommodated by histidine ideally:

A

3

148
Q

In a peptide linkage, the state of hybridization of both C and N is respectively.

A

sp2 and sp3

149
Q

A tripeptide is hydrolyzed which technique is best to identify its composition?

A

Partition Chromatography

150
Q

What type of isomerism cannot exist in Gly-Ala dipeptide?

A

Cis-trans-Isomerism

151
Q

2-6 Diamine hexanoic acid is IUPAC name of:

A

Lysine

152
Q

After reacting with HCl Zwitter ion valine exist as a/an:

A

Acid

153
Q

Fatty acids react with bromine in the presence of:

A

P

154
Q

The reaction of NH3 with 2-Bromo-3-methyl butanoic acid is required:

A

Iso-butyraldehyde

155
Q

By acid hydrolysis of α-amino nitrile we obtain:

A

Cationic amino acid

156
Q

The reaction of ethanol with glycine yield:

A

Ethyl, α-amino acetate

157
Q

Peptide linkage is chemical:

A

Amide Linkage

158
Q

In an α-helix of the secondary structure of the protein, the hydrogen bond exists between:

A

➡Carbonyl oxygen
➡Hydrogen of amine

159
Q

The groups responsible for hydrogen bonding in proteins are;

A

➡>C=O
➡H-N<

160
Q

Which enzyme bring about the exchange in the functional group between two compounds:

A

Phospho-Transferase

161
Q

Gelatin is obtained by heating:

A

➡Bones
➡Tendons
➡Skins

162
Q

The enzyme used locally to stop bleeding

A

Thrombin

163
Q

A polypeptide is conventionally called a protein if it has:

A

Molar mass more than 10,000 (g/mole)

164
Q

The tanning of hides is:

A

Precipitation of protein

165
Q

Many enzymes contain a protein part and a non-protein part. This protein part is:

A

Apoenzyme

166
Q

Which of the following enzyme has Fe+2 ions as a co-factor?

A

Chrome oxidase

167
Q

In the formation of protein, the carboxylic group of amino acids and the amino group of other amino acids condensed together to give:

A

Peptide Linkage

168
Q

Which enzyme is used to catalyze the addition of ammonia, water or carbon dioxide to double bond

A

Succinic Thiokinase

169
Q

Nyon-6,6 is a type of condensation polymerization. Its monomers are;

A

➡Hexane-1,6-diamine
➡Hexanedioic acid

170
Q

Which of the following intermolecular force is dominant in Nylon-6,6?

A

Hydrogen Bonding

171
Q

Nylon-6,6 has all of the following properties EXCEPT:

A

➡It is a textile fibre❌
➡It has high strength❌
➡It has abrasion resistance❌
➡It has very low elasticity✅

172
Q

There are two types of polymerization i.e. addition and condensation. Condensation polymerization has all of the followig properties EXCEPT:

A

➡It involves two different monomers❌
➡It take place with the elimination of small molecules❌
➡It involves catalyst✅
➡It molar mass is not fixed❌

173
Q

Polyester is a type of condensation polymerization. Its monomers are;

A

➡1,2-Ethandeiol
➡Benzene-1,4-dicarboxylic acid

174
Q

Mark the incorrect statement about thermoplastic polymers:

A

The are more brittle and insoluble in organic solvents

175
Q

All of the following are thermosetting polymers EXCEPT:

A

➡Polystyrene✅
➡Bakelite❌
➡Synthetic Varnish❌
➡Terylene❌

176
Q

All of the following are thermoplastic polymers EXCEPT:

A

➡PVC❌
➡Teflon❌
➡High density polyethylene(HDPE)❌
➡Nylon-6,6✅

177
Q

Which of the following is a synthetic polymer?

A

Polyester

178
Q

Plastics are pollution problem because many plastics:

A

Burn to produce toxic fumes

179
Q

A polymeric substance that is formed in the liquid state and then harden to a rigid solid is called as;

A

Plastic

180
Q

Polystyrene is an addition polymer obtained by polymerization of styrene in the presence of catalyst. Which one of the following is not use of polystyrene?

A

➡It is used as an adhesive material✅
➡It is used for making cosmetic bottles❌
➡It is used for making packing material❌
➡It is used for making food containers❌

181
Q

Mark the pair of macromolecules which have same type of linkage.

A

➡Proteins
➡Nylon

182
Q

Which of the following polymers is formed through free radical mechanism?

A

PVC

183
Q

Which of the following is not nitrogen base?

A

➡Adenine❌
➡Caesein✅
➡Guanine❌
➡Thymine❌

184
Q

All of the following have peptide linkage EXCEPT:

A

➡Nylon-6,6❌
➡Terylene✅
➡Protein❌
➡Nylon-6,10❌

185
Q

All of the following are addition polymers EXCEPT:

A

➡Polyvinyl chloride❌
➡Polyethylene❌
➡Polyvinyl acetate❌
➡Polyester✅

186
Q

The sequence of the amino acids combined in a peptide chain is referred to as the ___ of protein.

A

Primary Structure

187
Q

The _____ structure of a protein is a regular coiling or zigzagging of polypeptide chains caused by hydrogen
bonding between NH and C = O groups of amino acids
ear each other in the chains.

A

Secondary Structure

188
Q

Which of the following is an example of derived proteins.

A

Oligopeptides

189
Q

The specific substance(metabolite) that fits on the enzyme surface and is converted to products is called:

A

Substrate

190
Q

The enzyme that catalyze the transfer of groups within molecules to yield isomeric forms is called:

A

Isomerase

191
Q

Collagen Proteins are present in ___ throughout the body.

A

Tendons

192
Q

Many enzymes contain a protein part and non-protein part. The protein part of enzyme is called:

A

Apoenzyme

193
Q

The rate of enzymatic reaction is directly proportional:

A

√[Enzyme]

194
Q

Which enzyme is used to convert glucose into ethanol

A

Zymase

195
Q

Legumin and collage proteins are present in the connective tissues throughout the body. They are categorized under:

A

Simple Proteins

196
Q

The simple sequence of the amino acids combined in a peptide chain is referred to as the:

A

Primary Structure

197
Q

Haemoglobin is a:

A

Transport Protein

198
Q

Collagen is a fibrous protein present most abundantly in:

A

Tendons

199
Q

The enzyme useful for treatment of blood cancer in children is:

A

L-asparaginase

200
Q

The substance which reduces the enzyme activity:

A

Inhibitor

201
Q

Which of the following enzyme ha Fe+2 ions as co-factor.

A

Chrome oxidase

202
Q

Which of the following statement is correct about enzymes?

A

➡They are specific in their action
➡They are protein in nature
➡Most enzymatic reactions are reversible

203
Q

Compounds having -C≡N group are called:

A

Nitriles

204
Q

Many enzymes contain a protein part and a non-protein part. Protein part is called:

A

Apoenzyme

205
Q

The three-dimensional twisting and folding of polypeptide chain results in:

A

Tertiary Structure

206
Q

All proteins yield ____ upon complete hydrolysis

A

Amino acid

207
Q

The bond that join two amino acids cannot be called as:

A

Di-sulfide bond

208
Q

The secondary structure of protein is maintained by H-bonding between:

A

O and H

209
Q

Amino acids are the building blocks of:

A

Proteins

210
Q

Which enzyme us used to catalyze the addition of ammonia, water or carbon dioxide to double bond

A

Phospho-glyceromutases

211
Q

Enzyme used for conversion of starch to glucose and glucose to ethanol aer:

A

Diastase + Zymase

212
Q

Which statement is inocorrect?

A

➡Enzymes are stereospecific❌
➡Enzymes are highly specific❌
➡Enzymes can be crystallized❌
➡Enzymes can resist the radiation✅

213
Q

Which one of the following statements is incorrect?

A

➡Enzymes are protein in nature❌
➡Enzymes can act as a catalyst❌
➡Enzymes can catalyze any reaction✅
➡Urease is an enzyme❌

214
Q

The three dimensional twisting and folding of the polypeptide chain results in the _____ of proteins.

A

Tertiary Structure

215
Q

In formaton of protein, carboxylic group of one amino acid and amino group of other amino acid condensed together to give:

A

Peptide Linkage

216
Q

Which of the following is/are examples of simple protein

A

➡Collagen
➡Albumin

217
Q

Gelatin is obtained by heating:

A

Bones

218
Q

The molecular weight of protein is:

A

> 10000 amu

219
Q

Many enzymes contain a protein part and non-protein part. This protein part is:

A

Apoenzyme

220
Q

The enzyme which can catalyze the conversion of glucose to ethyl alcohol is:

A

Zymase

221
Q

Glucose is converted into ethanol by the enzyme:

A

Zymase

222
Q

Which of the following enzyme has Zn+2 ions as a co-factor

A

Carbonic anhydrase

223
Q

Nucleoproteins are ___ proteins which transfer heredity information rom one generation to other:

A

Genetic proteins

224
Q

By which of the following condition proteins do not denature:

A

Adding 10% glucose solution

225
Q

In secondary structure of protein, hydrogen bonding is present in between:

A

➡NH
➡C=O

226
Q

Amino acids are the building blocks of:

A

Proteins

227
Q

A protein assumes at least:

A

3 structural levels

228
Q

The molecular weight of protein is:

A

> 10000 amu

229
Q

The helical structure of protein is stabilized by:

A

Hydrogen Bonds

230
Q

Amino acid monomers that fomr chain with peptide linkage by releasing a water molecule occurs in:

A

Condensation Polymerization

231
Q

A peptide bond in the linear sequence of amino acid primary structure of protein) is formed with the elimination of:

A

H2O

232
Q

The three dimensional twisting and folding of polypeptide chain results in;

A

Tertiary Structure

233
Q

Which of the following enzyme is proved very useful in the treatment of blood cancer in chidren:

A

L-Asparaginase

234
Q

After digestion, protein changes into;

A

Amio acids

235
Q

Many enzymes contain a protein part and non-protein part. This protein part is:

A

Apoenzyme

236
Q

Which is the function of proteins:

A

➡Nucleoproteins serves as carriers of proteins
➡Some proteins act as hormones
➡They take an essential part in formation of protoplasm

237
Q

Conversion of fumaric acid to maleic acid in the presence o fumarase enzyme. This is an example of;

A

Isomerases

238
Q

May enzymes contain a protein part and a non-protein part. Protein part is called:

A

Apoenzyme

CHEMISTRY (19 decks)

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