Biomolecule

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Commercially glucose is prepared by

Back (Answer)

Hydrolysis of starch in presence of dil H2SO4 under pressure and temp of 393K

Front (Question)

The presence of 6 c atoms in glucose was confirmed by

Back (Answer)

Reaction with HI

Front (Question)

How was the presence of carbonyl grp confirmed in glucose

Back (Answer)

Reaction with hydroxyl amine and hydrogen Cyanide it formed oxime and cyanohydrin

Front (Question)

How was the presence of aldehyde grpmconfirmed in glucose

Back (Answer)

Rn with mild oxidizing agent like Br water yield gluconic acid

Front (Question)

The presence of 5 OH grp was confirmed by

Back (Answer)

Rn with Acetic anhydride

Front (Question)

The presence of 1° alcoholic grp was confirmed by

Back (Answer)

Oxidation of glucose and gluconic acid in presence of nitric acid yield saccharic acid

Front (Question)

In carbohydrates D and L configuration is with resp to

Back (Answer)

Glyceraldehyde

Front (Question)

Despite having aldehyde grp which of the following is not given by aldehydes

Back (Answer)

Schiffs test and reaction with hydrogen sulphite addition compound, pentacetate of glucose does not react with hydroxylamine

Front (Question)

How is Alpha form of glucose obtained by

Back (Answer)

Crystallization from concentrated solution of glucose at 303K

#10

Front (Question)

How is beta form of glucose obtained

Back (Answer)

Crystallization from hot and saturated aq solution at 371K

#11

Front (Question)

Which has high melting point beta glucose or alpha glucose

Back (Answer)

Beta glucose

#12

Front (Question)

What is glycosididc linkage

Back (Answer)

Linkage btw two Monosacchrides through oxygen atom after the loss of water

#13

Front (Question)

In Sucrose Glycosidic linkage is btw

Back (Answer)

C1 of alpha (D) glucose and C2 of beta ( D) fructose

#14

Front (Question)

In maltose glycosidic linkage is btw

Back (Answer)

C1 of one glucose and C4 of another glucose ( Both are alpha D glucose)

#15

Front (Question)

In Lactose glycosidic linkage is btw

Back (Answer)

C1 of beta ( D) galactose and C4 of beta ( D) glucose

#16

Front (Question)

Starch is a polymer of

Back (Answer)

Alpha glucose

#17

Front (Question)

In amylose the linkage is

Back (Answer)

C1 and C4

#18

Front (Question)

In amylopectin the linkage is

Back (Answer)

C1 and C4 for unbranched and C1 and C6 for branched

#19

Front (Question)

Cellulose is made up of

Back (Answer)

Beta D glucose

#20

Front (Question)

Why is glycogen known as animal Starch?

Back (Answer)

The structure of glycogen is similar to Starch but glycogen is more branched

#21

Front (Question)

Hydrolysis of proteins obtain

Back (Answer)

Alpha Amino acids

#22

Front (Question)

A: glycine has sweet taste R: tyrosine was first obtained from cheese

Back (Answer)

Both A and R are true but they are not related to each other

#23

Front (Question)

Essential amino acids

Back (Answer)

PVT TIM HALL Phenylphalanine , valine , Tryptophan, threonine , isoleucine , Methionine, histidine, Arginine, lucine , Lysine

#24

Front (Question)

Amino acids bhave like

Back (Answer)

Salts