Biomolecules Test 1

Total Questions:50 Total Time: 60 Min

Remaining:

 

Questions 1 of 50

Question:Gun-cotton is

Answers Choices:

Nitrosucrose

Nitrocellulose

Nitroglucose

Nitropicrin

Questions 2 of 50

Question:Which of the following monosaccharide is a pentose

Answers Choices:

Galactose

Glucose

Fructose

Arabinose

Questions 3 of 50

Question:Amide group is present in

Answers Choices:

Lipids

Carbohydrates

Amino acids

Proteins

Questions 4 of 50

Question:Which of the following sign indicate that the sugar is actually 'dextrorotatory'

Answers Choices:

-

+

R

All of these

Questions 5 of 50

Question:The standard compound for determination of configuration in the 'sugar chemistry' is

Answers Choices:

Glycolaldehyde

Glyceraldehyde

Glucose

Fructose

Questions 6 of 50

Question:Sugars are

Answers Choices:

Optically active polyhydroxy aldehydes

Optically active polyhydroxy ketones

Optically active polyhydroxy aldehydes or ketones

Polyhydroxy aldehydes or ketones which may or may not be optically active

Questions 7 of 50

Question:The letter 'D' in carbohydrates represents

Answers Choices:

Its direct synthesis

Its dextrorotation

Its mutarotation

Its configuration

Questions 8 of 50

Question:Starch can be used as an indicator for the detection of traces of

Answers Choices:

Glucose in aqueous solution

Protein in blood

Iodine in aqueous solution

Urea in blood

Questions 9 of 50

Question:It is best to carry out reactions with sugars in neutral or acid medium and not in alkaline medium. This is because in alkaline medium sugars undergo one of the following changes

Answers Choices:

Racemisation

Decomposition

Inversion

Rearrangement

Questions 10 of 50

Question:Which one of the following is laevorotatory

Answers Choices:

Glucose

Sucrose

Fructose

None of these

Questions 11 of 50

Question:Chemically 'digestion' is

Answers Choices:

Hydrolysis

Change in bacteria

Hydrogenation

Dehydrogenation

Questions 12 of 50

Question:Which one of the following is the reagent used to identify glucose

Answers Choices:

Neutral ferric chloride

Chloroform and alcoholic KOH

Ammoniacal silver nitrate

Sodium ethoxide

Questions 13 of 50

Question:Optical activity is shown by

Answers Choices:

Glucose

Fructose

Sucrose

All of these

Questions 14 of 50

Question:Which is a reducing sugar

Answers Choices:

Glucose

Fructose

Galactose

All of these

Questions 15 of 50

Question:The ultimate product of oxidation of most of hydrogen and carbon in foodstuffs are

Answers Choices:

\({H_2}O\) alone

\(C{O_2}\) alone

\({H_2}O\) and \(C{O_2}\)

None of these

Questions 16 of 50

Question:Cellulose is a polymer of

Answers Choices:

L-fructose

D-mannose

D-glucose

Amylose

Questions 17 of 50

Question:The intermediate compound formed in the conversion of starch to glucose is

Answers Choices:

Lactose

Sucrose

Maltose

Fructose

Questions 18 of 50

Question:Invertase brings about the conversion of

Answers Choices:

Starch to glucose

Sucrose to glucose and fructose

Maltose to glucose

Glucose to \({C_2}{H_5}OH\) and \(C{O_2}\)

Questions 19 of 50

Question:Starch is converted into maltose by the

Answers Choices:

Maltase

Invertase

Zymase

Diastase

Questions 20 of 50

Question:The disaccharide present in milk is

Answers Choices:

Maltose

Lactose

Sucrose

Cellobiose

Questions 21 of 50

Question:Carbohydrates are used by body mainly

Answers Choices:

For obtaining vitamins

As source of energy

For all its developmental needs

For building muscles

Questions 22 of 50

Question:Raffinose is

Answers Choices:

Trisaccharide

Monosaccharide

Disaccharide

None of these

Questions 23 of 50

Question:A sugar, that is not a disaccharide, among the following is

Answers Choices:

Lactose

Galactose

Sucrose

Maltose

Questions 24 of 50

Question:To detect the reducing and non reducing sugars, which of the following test is used

Answers Choices:

Molisch test

Biuret test

Fehling's test

Millions test

Questions 25 of 50

Question:Glucose has difference from fructose in that it

Answers Choices:

Does not undergo hydrolysis

Gives silver mirror with Tollen's reagent

Monosaccharide

None of these

Questions 26 of 50

Question:In fructose, the possible optical isomers are

Answers Choices:

12

8

16

4

Questions 27 of 50

Question:If an aqueous solution of glucoseis allowed to freeze than crystal of which will be separated out first

Answers Choices:

Glucose

Water

Both of these

None of these

Questions 28 of 50

Question:Enzymes are

Answers Choices:

Proteins

Minerals

Oils

Fatty acids

Questions 29 of 50

Question:Proteins are built up of

Answers Choices:

Dicarboxylic acids

Amino acids

Alcohols

Hydroxy acids

Questions 30 of 50

Question:The main structural feature of proteins is

Answers Choices:

The ester linkage

The ether linkage

The peptide linkage

All of these

Questions 31 of 50

Question:The enzyme ptylin used for the digestion of food is present in

Answers Choices:

Saliva

Blood

Intestines

Adrenal glands

Questions 32 of 50

Question:Which one of the following is an amino acid

Answers Choices:

\(C{H_3}CON{H_2}\)

\(C{H_3}CONHC{H_3}\)

\(C{H_3}NHCHO\)

\(N{H_2}C{H_2}.COOH\)

Questions 33 of 50

Question:Biuret test is used for the detection of

Answers Choices:

Saturated oils

Sugars

Proteins

Fats

Questions 34 of 50

Question:The functional group which is found in amino acid is

Answers Choices:

\( - COOH\) group

\( - N{H_2}\) group

\( - C{H_3}\) group

Both 1 and 2

Questions 35 of 50

Question:Amino acids are produced on hydrolysis of

Answers Choices:

Nucleic acid

Carbohydrates

Fats

Proteins

Questions 36 of 50

Question:The 10% energy transfer law of food chain was given by

Answers Choices:

Stanley

Weismann

Lindemann

Tansley

Questions 37 of 50

Question:Which of the following is a conjugated protein

Answers Choices:

Glycoprotein

Phosphoprotein

Chromoprotein

All of these

Questions 38 of 50

Question:Enzymes are made up of

Answers Choices:

Carbohydrates

Edible proteins

Nitrogen containing carbohydrates

Proteins with specific structure

Questions 39 of 50

Question:Which enzyme convert glucose into alcohol

Answers Choices:

Invertase

Zymase

Maltase

Diastase

Questions 40 of 50

Question:Which one of the following structures represents the peptide chain

Answers Choices:

\( - \mathop {\mathop N\limits^| }\limits^H - \mathop C\limits_|^| - \mathop {\mathop C\limits_{||} }\limits_O - \mathop {\mathop N\limits^| }\limits^H - \mathop C\limits_|^| - \mathop {\mathop C\limits_{||} }\limits_O - \mathop {\mathop N\limits^| }\limits^H - \mathop C\limits_|^| - \mathop {\mathop C\limits^{||} }\limits^O - \)

\( - \mathop {\mathop N\limits^| }\limits^H - \mathop C\limits_|^| - \mathop C\limits_|^| - \mathop {\mathop C\limits^{||} }\limits^O - \mathop {\mathop N\limits_| }\limits_H - \mathop C\limits_|^| - \mathop C\limits_|^| - \mathop {\mathop N\limits^| }\limits^H - \mathop {\mathop C\limits_{||} }\limits_O - \mathop C\limits_|^| - \mathop C\limits_|^| - \)

\( - \mathop {\mathop N\limits^| }\limits^H  - \mathop {\mathop C\limits_{||} }\limits_O  - \mathop {\mathop N\limits_| }\limits_H  - \mathop C\limits_|^|  - NH - \mathop {\mathop C\limits^{||} }\limits^O  - NH - \)

\( - \mathop {\mathop N\limits^| }\limits^H  - \mathop {\mathop C\limits_{||} }\limits_O  - \mathop C\limits_|^|  - \mathop C\limits_|^|  - \mathop C\limits_|^|  - \mathop {\mathop N\limits^| }\limits^H  - \mathop C\limits_|^|  - \mathop C\limits_|^|  - \mathop C\limits_|^|  - \)

Questions 41 of 50

Question:Which of the following indicates the number of free \( - OH\) groups in an oil or fat

Answers Choices:

Iodine value

Acid value

Acetyl value

Saponification value

Questions 42 of 50

Question:Which of the following is not glyceride

Answers Choices:

Lipids (simple)

Phospholipids

Sphingolipids

All

Questions 43 of 50

Question:\(\mathop {\mathop {CHOOCR\,\,}\limits_{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}^{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} }\limits_{C{H_2}OOCR'''}^{C{H_2}OOCR'\,} \mathop {}\limits_{{\rm{Hydrolysis}}} \mathop {\mathop {\mathop {CHOH}\limits_{|\,\,\,\,\,\,\,\;\,\,\,\,\,\,\,\,}^{|\,\,\,\,\,\,\,\,\;\,\,\,\,\,\,\,} }\limits_{C{H_2}OH} }\limits^{C{H_2}OH} + \mathop {\mathop {R''COOH\,}\limits_ + ^ + }\limits_{R'''COOH}^{R'COOH} \) . The enzyme used in the above reaction is

Answers Choices:

Amylase

Lactase

Lipase

Invertase

Questions 44 of 50

Question:Oleic, stearic and palmitic acids are

Answers Choices:

Fatty acid

Amino acid

Nucleic acid

Essential acid

Questions 45 of 50

Question:Which of the following is not present in nucleic acids

Answers Choices:

Uracil

2-aminopyridine

Thymine

Adenine

Questions 46 of 50

Question:In nucleic acids, the sequence is

Answers Choices:

Base-phosphate-sugar

Phosphate-base-sugar

Sugar-base-phosphate

Base-sugar-phosphate

Questions 47 of 50

Question:Blood calcium level can be increased by the administration of

Answers Choices:

Glucogon

Calcitonin

Thyroxine

Paratharmone

Questions 48 of 50

Question:The first harmone chemically synthesised in the laboratory is

Answers Choices:

Cortisone

Insuline

Adrenaline

Estrone

Questions 49 of 50

Question:Vitamin \({B_6}\) is known as

Answers Choices:

Pyridoxin

Thiamine

Tocopherol

Riboflavin