An acids among the followingthat acts as vitamin is:

  • Benzoic acid

  • Ascorbic acid

  • Oxalic acid

  • Formic acid

A linkage present in proteins and peptides is:
  • 1
  • 2
  • 3
  • 4

An optically inactive amino acid is - 
  • Lactic acid
  • Serine
  • Alanine
  • Glycine

The incorrect statement among the following options is: 

  • Chlorophyll is responsible for the synthesis of carbohydrates in plants.

  • The compound formed by the addition of oxygen to hemoglobin is called oxyhemoglobin.

  • Acetylsalicylic acid is known as aspirin.

  • The metal ion present in vitamin B12 is Mg++

Waxes are esters of:

  • Glycerol and fatty acid.

  • Long-chain alcohols and long-chain fatty acids.

  • Glycerol.

  • Long-chain alcohol.

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor.

M is:

  •   Sr

  •   Be

  •   Mg

  •   Ca

The non-essential amino acid among the following is :

  •   Lysine

  •   Valine

  •   Leucine

  •   Alanine

The two forms of D-Glucopyranose are called : 

  • Anomers 

  • Epimers

  • Enantiomers 

  • Diastereoisomers

Cellulose upon acetylation with excess acetic anhydride/H2SO4 (catalytic) gives cellulose triacetate whose structure is –
  • 1
  • 2
  • 3
  • 4

Incorrect statement about carbohydrates is : 

  •   Maltose is a reducing sugar.

  •   The carbohydrates are stored in the animal body as glycogen.

  •   Amylopectin constitutes about 15-20% Of starch.

  •   Cellulose is composed of only β-D- glucose units.

Sanger's reagent is used for the identification of

  •   The N-terminal amino acid of a peptide chain

  •   The c-terminal amino acid of a peptide chain

  •   The sidechain of amino acids

  •   Number of amino acid units

Which of the following carbohydrate undergo mutarotation in aqueous solution?

  •   Maltose

  •   Lactose

  •   Glucose

  •   All of these

Which of the following carbohydrates is not oxidized by bromine water?

  •   D - Galactose

  •   D - Glucose

  •   D - Fructose

  •   D - Mannose

Millon's test is given by that protein
  •   Which contain phenolic amino acids

  •   Which contain amino acid having S

  •   Which contain the basic amino acid

  •   Which contain the neutral amino acid

The vitamin which causes impotency is

  • Calciferol

  • Biotin

  • Tocopherol

  • Retinol

α-helix is also known as

  •   Sheet structure

  •   Flat structure

  •   3.613 helix

  •   4.915 helix

Insulin and carboxypeptidase contains respectively

  •   Cu, Zn

  •   An, Cu

  •   Cu, Cu

  •   Zn, Zn

The structural feature which distinguishes proline from other natural α-amino acids is -
  •   It is optically inactive.

  •   It contains an aromatic group.

  •   It is a dicarboxylic acid.

  •   It is a secondary amine.

If α—D—glucose is dissolved in water and kept for a few hours, the major constituent(s) present in the solution is (are) :

  •   α—D—glucose.

  •   The mixture of ß—D-glucose and open-chain D-glucose.

  •   Open chain D-glucose.

  •   The mixture of α—D—glucose and ß—D-glucose.

The compound that does not reduce Benedict's solution is: 

  •   Glucose

  •   Fructose

  •   Sucrose

  •   Aldehyde

Which structure(s) of proteins remains(s) intact during denaturation process?

  • Both secondary and tertiary structures

  • Primary structure only

  • Secondary structure only

  • Tertiary structure only

The human body does not produce

  • DNA

  • vitamins

  • hormones

  • enzymes

Scurvy is caused due to deficiency of vitamin:-

  •   B2

  •   B12

  •   C

  •   D

An acid that acts as vitamin is -

  • Aspartic acid

  • Glumatic acid

  • Ascorbic acid

  • Saccharic acid

The test that is not used for testing proteins is: 

  • Ninhydrin test

  • Millon's test

  • Molisch's test

  • Biuret test

Sucrose on hydrolysis gives :

  •  α-D-Glucose + β-D-Glucose

  •   α-D-Glucose + β-D-Fructose

  •   α-D-Fructose + β-D-Fructose

  •   β-D-Glucose + α-D-Fructose

The following metal ions activates many enzymes participates in the oxidation of glucose to produce ATP and with Na is responsible for the transmission of nerve signals

  • Copper

  • Calcium

  • Potassium

  • Iron

Which of the following is a basic amino acid?

  •  Alanine

  •  Tyrosine

  •  Lysine

  •  Serine 

A well known naturally occuring organometallic compound is

  • vit B12 coenzyme

  • chlorophyll

  • cytochrome P-450

  • myoglobin

VO43- or PO43- which inhibits the operation of enzyme ATPase?

  • Both

  • Only PO43-

  • Only VO43-

  • None of these

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