Biomolecules Test 5

Total Questions:50 Total Time: 60 Min

Remaining:

 

Questions 1 of 50

Question:Molecular formula \({C_6}{H_{12}}{O_6}\) is of

Answers Choices:

Glucose

Fructose

Both (1) and (2)

None of these

Questions 2 of 50

Question:Hydrolysis of sucrose is called

Answers Choices:

Esterification

Saponification

Inversion

Hydration

Questions 3 of 50

Question:In the 'glycolipids', the two sugars known to occur are glucose and

Answers Choices:

Fructose

Lactose

Galactose

Sucrose

Questions 4 of 50

Question:Gun-cotton is obtained when conc. nitric acid reacts with

Answers Choices:

Glycerine

Glycol

Cellulose

Starch

Questions 5 of 50

Question:A carbohydrate consists of

Answers Choices:

C and O

\(C,\,\,H\) and O

\(C,\,\,H,\,\,N\) and O

C and H

Questions 6 of 50

Question:Glucose forms many derivatives. The derivative which will help to prove the furanose structure is

Answers Choices:

Acetyl

Benzoyl

Osazone

Isopropylidene

Questions 7 of 50

Question:Sucrose is

Answers Choices:

Laevorotatory

Dextrorotatory

Racemic mixture

Optically inactive

Questions 8 of 50

Question:The hydrolysis of sucrose produces a mixture which is

Answers Choices:

Laevorotatory

Dextrorotatory

Equally both (+) and (–) rotator

Optically inactive

Questions 9 of 50

Question:A carbohydrate that cannot be hydrolysed to simpler forms is called

Answers Choices:

Disaccharide

Monosaccharide

Polysaccharide

Trisaccharide

Questions 10 of 50

Question:If monosaccharide contains an aldehyde group, it is known as

Answers Choices:

Epimer

Osones

Osazone

Aldose

Questions 11 of 50

Question:Hydrolytic conversion of sucrose into glucose and fructose is known as

Answers Choices:

Induction

Saponification

Inversion

Esterification

Questions 12 of 50

Question:Starch is a polymer of

Answers Choices:

Glucose

Fructose

Both (1) and (2)

None of these

Questions 13 of 50

Question:Which of the following does not show any reducing test of aldehyde

Answers Choices:

Sucrose

Fructose

Maltose

Lactose

Questions 14 of 50

Question:When amylases catalyse the hydrolysis of starch, the final product obtained is chiefly

Answers Choices:

Cellobiose

Glucose

Maltose

Sucrose

Questions 15 of 50

Question:The change in optical rotation with time of freshly prepared solutions of sugar is known as

Answers Choices:

Maturation

Rotatory motion

Inversion

Specific rotation

Questions 16 of 50

Question:Yeast cell derive their energy from glucose by

Answers Choices:

Glycolysis

Respiration formation

Formation

None of these

Questions 17 of 50

Question:Glucose and mannose are

Answers Choices:

Epimers

Anomers

Ketohexoses

Disaccharides

Questions 18 of 50

Question:On hydrolysis, which produces only glucose

Answers Choices:

Galactose

Maltose

Sucrose

None

Questions 19 of 50

Question:Which of the following is not essential amino acid

Answers Choices:

Valine

Lysine

Histidine

Glycine

Questions 20 of 50

Question:Amino acids are

Answers Choices:

Liquids

Volatile solids

Non-volatile crystalline compounds

Mixture of amines and acids

Questions 21 of 50

Question:The helical structure of proteins is established by

Answers Choices:

Peptide bonds

Dipeptide bond

Hydrogen bond

Vander Waal's forces

Questions 22 of 50

Question:Natural silk is a

Answers Choices:

Polyester

Polyamide

Polyacid

Polysaccharide

Questions 23 of 50

Question:Protein contains

Answers Choices:

\(C,\,\,H,\,\,O\) and N

Only C and H

\(Cl,\,\,H\) and \(O\)

All of these

Questions 24 of 50

Question:Of the following statements about enzymes which ones are true (i) Enzymes lack in nucleophilic groups (ii)Enzymes are highly specific both in binding chiral substrates and in catalyzing their reactions (iii)Enzymes catalyse chemical reactions by lowering the activation energy (iv)Pepsin is a proteolytic enzyme

Answers Choices:

(i) and (iv)

(i) and (iii)

(ii), (iii) and (iv)

(i)

Questions 25 of 50

Question:Proteins are composed of

Answers Choices:

\(\alpha - \)amino acids

Carbohydrates

Vitamins

Mineral salts

Questions 26 of 50

Question:Read the following statements carefully (A) Albumin is a simple protein (B) The amino acid alanine contains an acidic side chain (C) Insulin is a hormone (D) Muscles contain the protein keratin Point out the wrong statements in the above set of statements

Answers Choices:

A, B

C, D

A, C

B, D

Questions 27 of 50

Question:Dialysis can separate

Answers Choices:

Glucose and fructose

Glucose and sucrose

Glucose and NaCl

Glucose and proteins

Questions 28 of 50

Question:Which one of the following is an example of a globular protein

Answers Choices:

Keratin

Insulin

Collagen

Myoglobin

Questions 29 of 50

Question:Leucine amino acids is the

Answers Choices:

Essential

Non-essential

Aromatic

Basic

Questions 30 of 50

Question:Which \(\alpha \)- amino acid can cross link peptide chains

Answers Choices:

Serine

Cysteine

Glutamine

Tyrosine

Questions 31 of 50

Question:Amino acids are the building blocks of

Answers Choices:

Fat

Vitamin

Protein

Carbohydrate

Questions 32 of 50

Question:Which of the following protein destroys the antigen when it enters in body cell

Answers Choices:

Antibodies

Insulin

Chromoprotein

Phosphoprotein

Questions 33 of 50

Question:Which amino acid has aromatic ring

Answers Choices:

Alamine

Glycine

Tyrosine

Lysine

Questions 34 of 50

Question:The pH value of the solution in which a particular amino acid does not migrate under the influence of an electric field in called the

Answers Choices:

Eutectic point

Yielding point

Neutralisation point

Effusion

Isoelectric point

Questions 35 of 50

Question:Which part of the protein molecule is responsible for function and activity of the proteins

Answers Choices:

Secondary structure

Peptide bond

Primary structure

Binding sites

Questions 36 of 50

Question:Which of the following is not a lipid

Answers Choices:

Oils

Fats

Waxes

Proteins

Questions 37 of 50

Question:The 'acid value' of an oil or fat is measured in terms of weight of

Answers Choices:

\(N{H_4}OH\)

NaOH

KOH

\(C{H_3}COOH\)

Questions 38 of 50

Question:The ‘saponification value’ of an oil or fat is measured in terms of

Answers Choices:

\(N{H_4}OH\)

NaOH

KOH

\({C_6}{H_5}OH\)

Questions 39 of 50

Question:Hydrolytic reaction of fats, with caustic soda, is known as

Answers Choices:

Acetylation

Carboxylation

Saponification

Esterification

Questions 40 of 50

Question:Fat consists of

Answers Choices:

Monohydroxy carboxylic acid

Monohydroxy aliphatic carboxylic acid

Monohydroxy aliphatic, saturated carboxylic acid

Dihydroxy aliphatic carboxylic acid

Questions 41 of 50

Question:The alcohol obtained by the hydrolysis of oils and fats is

Answers Choices:

Glycol

Glycerol

Propanol

Pentanol

Questions 42 of 50

Question:The chemical name of vitamin C is

Answers Choices:

Ascorbic acid

Folic acid

Nicotinic acid

Tartaric acid

Questions 43 of 50

Question:Which of the following is not a constituent of RNA

Answers Choices:

Ribose

Phosphate

Adenine

Pyridine

Questions 44 of 50

Question:Which one is found in ATP ribonucleotide

Answers Choices:

Guanine

Uracil

Adenine

None of these

Questions 45 of 50

Question:DNA contains the sugar

Answers Choices:

Deoxyribose

Ribose

D-Fructose

D-glucose

Questions 46 of 50

Question:Which of the following is not a sex hormone

Answers Choices:

Testosterone

Estrone

Estradiol

Cortisone

Questions 47 of 50

Question:Acquired immune deficiency syndroms (AIDS) is characterised

Answers Choices:

Killer T-cells

Reduction in number of helper T-cells

An autoimmune disease

Inability of body to produce interferons

Questions 48 of 50

Question:Insulin production and its action in human body are responsible for the level of diabetes. This compound belongs to which of the following categories

Answers Choices:

An enzyme

A harmone

A co-enzyme

An antibiotic

Questions 49 of 50

Question:Codon is present in

Answers Choices:

t-RNA

m-RNA

r-RNA

All of these

Questions 50 of 50

Question:Energy is stored in our body in the form of

Answers Choices:

ATP

ADP

Fats

Carbohydrates