Match List I with List II
| LIST I Natural Amino Acid |
LIST II One Letter Code |
||
|---|---|---|---|
| A. | Arginine | I. | D |
| B. | Aspartic acid | II. | N |
| C. | Asparagine | III. | A |
| D. | Alanine | IV. | R |
Choose the correct answer from the options given below:
Match List I with List II
| LIST I Enzymatic reaction |
LIST II Enzyme |
||
|---|---|---|---|
| A. | Sucrose $\to$ Glocuse and Fructose | I. | Zymase |
| B. | Glucose $\to$ ethyl alcohol and CO$_2$ | II. | Pepsin |
| C. | Starch $\to$ Maltose | III. | Invertase |
| D. | Proteins $\to$ Amino acids | IV. | Diastase |
Choose the correct answer from the options given below:
All structures given below are of vitamin C. Most stable of them is :
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : $\alpha$-halocarboxylic acid on reaction with dil. $\mathrm{NH_3}$ gives good yield of $\alpha$-amino carboxylic acid whereas the yield of amines is very low when prepared from alkyl halides.
Reason (R) : Amino acids exist in zwitter ion form in aqueous medium.
In the light of the above statements, choose the correct answer from the options given below :
The correct representation in six membered pyranose form for the following sugar [X] is
Match List I with List II
| List I | List II | ||
|---|---|---|---|
| Test | Functional group / Class of Compound | ||
| A. | Molisch's Test | I. | Peptide |
| B. | Biuret Test | II. | Carbohydrate |
| C. | Carbylamine Test | III. | Primary amine |
| D. | Schiff's Test | IV. | Aldehyde |
Choose the correct answer from the options given below :
A protein '$\mathrm{X}$' with molecular weight of $70,000 \mathrm{~u}$, on hydrolysis gives amino acids. One of these amino acid is
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Ketoses give Seliwanoff's test faster than Aldoses.
Reason (R) : Ketoses undergo $\beta$-elimination followed by formation of furfural.
In the light of the above statements, choose the correct answer from the options given below :
(F, L, D, Y, I, Q, P are one letter codes for amino acids)
Number of cyclic tripeptides formed with 2 amino acids A and B is :
Match items of Row I with those of Row II.
Row I :
Row II :
(i) $\alpha$-$\mathrm{D}$-$(-)$-$\mathrm{Fructofuranose}$
(ii) $\beta$-D-$(-)$-Fructofuranose
(iii) $\alpha$-D-$(-)$ Glucopyranose
(iv) $\beta$-D-$(-)$-Glucopyranose
Correct match is
Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Amylose is insoluble in water.
Reason R: Amylose is a long linear molecule with more than 200 glucose units.
In the light of the above statements, choose the correct answer from the options given below.
The formulas of A and B for the following reaction sequence
are
For the below given cyclic hemiacetal (X), the correct pyranose structure is :
Match List - I with Match List - II.
| List - I | List - II | ||
|---|---|---|---|
| (A) | Glucose + HI | (I) | Gluconic acid |
| (B) | Glucose + Br$_2$ water | (II) | Glucose pentacetate |
| (C) | Glucose + acetic anhydride | (III) | Saccharic acid |
| (D) | Glucose + HNO$_3$ | (IV) | Hexane |
Choose the correct answer from the options given below:
A sugar 'X' dehydrates very slowly under acidic condition to give furfural which on further reaction with resorcinol gives the coloured product after sometime. Sugar 'X' is
Animal starch is the other name of
Which one of the following is a reducing sugar?
Glycosidic linkage between C1 of $\alpha$-glucose and C2 of $\beta$-fructose is found in
During the denaturation of proteins, which of these structures will remain intact?
The sugar produced after complete hydrolysis of DNA is
The structure of protein that is unaffected by heating is
Sugar moiety in DNA and RNA molecules respectively are
When sugar 'X' is boiled with dilute H2SO4 in alcoholic solution, two isomers 'A' and 'B' are formed. 'A' on oxidation with HNO3 yields saccharic acid where as 'B' is laevorotatory. The compound 'X' is :
Stability of $\alpha$-Helix structure of proteins depends upon
Given below are two statements.
Statement I : Maltose has two $\alpha$-D-glucose units linked at C1 and C4 and is a reducing sugar.
Statement II : Maltose has two monosaccharides : $\alpha$-D-glucose and $\beta$-D-glucose linked at C1 and C6 and it is a non-reducing sugar.
In the light of the above statements, choose the correct answer from the options given below :
L-isomer of a compound 'A' (C4H8O4) gives a positive test with [Ag(NH3)2]+. Treatment of 'A' with acetic anhydride yields triacetate derivative. Compound 'A' produces an optically active compound (B) and an optically inactive compound (C) on treatment with bromine water and HNO3 respectively. Compound (A) is :
Match List-I with List-II
| List - I Enzyne |
List - II Conversion of |
||
|---|---|---|---|
| A. | Invertase | I. | Starch into maltose |
| B. | Zymase | II. | Maltose into glucose |
| C. | Diastase | III. | Glucose into ethanol |
| D. | Maltase | IV. | Cane sugar into glucose |
Choose the most appropriate answer from the options given below :
Which one of the following is a water soluble vitamin, that is not excreted easily?
A polysaccharide 'X' on boiling with dil H2SO4 at 393 K under 2-3 atm pressure yields 'Y'. 'Y' on treatment with bromine water gives gluconic acid. 'X' contains $\beta$-glycosidic linkages only. Compound 'X' is :
Assertion (A) : Sucrose is a disaccharide and a non-reducing sugar.
Reason (R) : Sucrose involves glycosidic linkage between C1 of $\beta$-glucose and C2 of $\alpha$-fructose.
Choose the most appropriate answer from the options given below :
The compound 'A' is a complementary base of _______________ in DNA stands.
$\mathop {{C_6}{H_{12}}{O_6}}\limits_{Glu\cos e} \buildrel {Enzyme\,B} \over \longrightarrow 2{C_2}{H_5}OH + 2C{O_2}$
In the above reactions, the enzyme A and enzyme B respectively are :
