M5: Test for Carbohydrates

63問 • 1年前

saoirse

通報

問題一覧

In an anthrone test, this reacts with anthrone to give the bluish green color complex.

furfural

This is a general test for carbohydrates that yields a purple condensation product.

molisch test

This is the product of dehydrating carbohydrates using sulfuric acid (H2SO4) in a molisch test.

hydroxymethyl furfural

What is the positive result for a molisch test?

purple ring

This general test for carbohydrates is used for the detection and quantification of carbohydrates in blood serum, milk, and its variation, etc.

anthrone test

What is the positive result for an anthrone test?

blue-green color

These are sugars that contain free aldehyde groups that can be oxidized to carboxylic acids.

reducing sugars

Through this, ketoses can be isomerized to aldoses and become reducing sugars.

enediol

Reducing sugars are any sugars that contain a

hemi-acetal

If all monosaccharides are reducing sugars, what are polysaccharides?

non-reducing sugars

These are examples of reducing disaccharides.

lactose, maltose, cellobiose, gentobiose

This test for reducing sugar is a reaction with NaOH, with a color change from yellow to orange to dark brown.

moore’s test

This is the odor liberated by a positive Moore’s test.

caramel odor

This is the final color of a positive test result of Moore’s.

brown

This is formed when the cupric ion present in an alkaline reaction medium is reduced to cuprous ion.

cuprous oxide precipitate

Which is more sensitive between Fehling’s test and Benedict’s test?

fehling’s test

This test for reducing sugars has a positive result of a brick red precipitate.

fehling’s test

This test for reducing sugars is similar to Fehling’s test, where sugars with a free aldehyde or ketone group reduce cupric hydroxide in alkaline solution to red colored cuprous oxide.

benedict’s test

This is the positive result for a Benedict’s test.

red orange color

This reagent contains Ag+ ions in the form of Ag(NH3)2+.

tollen’s reagent

The silver diamine complex is reduced by the presence of free functional groups in the sugars to what form?

metallic silver

This test for reducing sugars has a positive result of the formation of a silver mirror.

tollen’s test

Glucose and fructose reduce Bi(OH)3 formed from bismuth subnitrate into black metallic in this type of medium.

alkaline medium

The presence of a reducing sugar in this test is having a brown to the black coloration of the solution where the metallic bismuth settles down.

nylander’s test

This is a positive result of the nylander’s test.

black precipitate

In this test for reducing sugars, there is a formation of a characteristic osazone crystals when heated with an excess phenylhydrazine.

phenylhydrazine test

This is a positive result of a phenylhydrazine test.

yellow to pale orange osazones

In a phenylhydrazine test, when do monosaccharides give crystals?

on heating

In a phenylhydrazine test, when do disaccharides give crystals?

on cooling

These are the only carbohydrates soluble in boiling water.

maltose and lactose

If glucose is to glucosazone, mannose is to?

mannosazone

This is the shape of galactose’s osazone crystals.

needle shape

If the shape of mannose’s osazone crystals is a bundle of grass that is bloom-like, what about fructose?

hay-like

What is the shape of glucose’s osazone crystals?

bundle of grass

If the osazone crystals of maltose is shaped like a sunflower, what about lactose’s?

puff-ball shape

This is a test used to distinguish reducing monosaccharides from reducing disaccharides.

barfoed’s test

In Barfoed’s test, copper (II) acetate is reduced to

copper (I) oxide

This is a positive result of the Barfoed’s test.

red color

This is a special test for peptide bonds.

bial’s orcinol test

In the presence of concentrated HCl, pentoses form a five member ring also known as

furfural

This reagent contains resorcinol and ferric ions.

bial’s reagent

The positive result of a Bial’s Orcinol Test is a

blue-green solution

This is a special test used to test for the presence of galactose.

mucic acid test

The resultant saccharic acid of galactose that is also insoluble in water and forms crystals is termed

mucic acid

Primary functional group and the secondary alcoholic group are oxidized to what in the presence of concentrated HNO3?

carboxylic group

This is the positive result of a mucic acid test.

white crystals

This is a special test for ketoses.

seliwanoff’s test

The derivatives of hydroxymethyl furfural react with this substance to yield a deep red or cherry red complex.

resorcinol

This process occurs more rapildy to ketoses than to aldoses in the presence of concentrated HCl in a Seliwanoff’s test.

dehydration

This is the positive result of a Seliwanoff’s test.

cherry red color

This special test is used to detect the presence of starch and will turn positive even if the starch present is of the smallest amount.

iodine test

This is formed due to the glucose unit’s trapping of the iodine molecules, forming a dark blue complex.

starch-iodine complex

This is a positive result for the Iodine test.

blue-black solution

Starch is an insoluble state with a blue-black reaction in the first stage of its hydrolysis. What is the color of its reaction if the starch is at a soluble state?

blue-black

With a blue-purple reaction, the soluble starch turns into this substance.

amylodextrine

In the hydrolysis of starch, the color reaction of this stage is red.

erythrodextrine

This is the fifth stage of the hydrolysis of starch, with a colorless color reaction.

archodextrine

This is the sixth stage of hydrolysing starch.

maltose

This is the primary form of starch and the last stage in its hydrolysis.

glucose

This is the other name for the Molisch reagent.

alpha-naphthol

This is the reagent used for the general tests Molisch and Anthrone.

H2SO4

This is the reagent used for Moore’s test.

NaOH

The resultant saccharic acid of galactose that is also insoluble in water and forms crystals is termed

mucic acid

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問題一覧

In an anthrone test, this reacts with anthrone to give the bluish green color complex.

furfural

This is a general test for carbohydrates that yields a purple condensation product.

molisch test

This is the product of dehydrating carbohydrates using sulfuric acid (H2SO4) in a molisch test.

hydroxymethyl furfural

What is the positive result for a molisch test?

purple ring

This general test for carbohydrates is used for the detection and quantification of carbohydrates in blood serum, milk, and its variation, etc.

anthrone test

What is the positive result for an anthrone test?

blue-green color

These are sugars that contain free aldehyde groups that can be oxidized to carboxylic acids.

reducing sugars

Through this, ketoses can be isomerized to aldoses and become reducing sugars.

enediol

Reducing sugars are any sugars that contain a

hemi-acetal

If all monosaccharides are reducing sugars, what are polysaccharides?

non-reducing sugars

These are examples of reducing disaccharides.

lactose, maltose, cellobiose, gentobiose

This test for reducing sugar is a reaction with NaOH, with a color change from yellow to orange to dark brown.

moore’s test

This is the odor liberated by a positive Moore’s test.

caramel odor

This is the final color of a positive test result of Moore’s.

brown

This is formed when the cupric ion present in an alkaline reaction medium is reduced to cuprous ion.

cuprous oxide precipitate

Which is more sensitive between Fehling’s test and Benedict’s test?

fehling’s test

This test for reducing sugars has a positive result of a brick red precipitate.

fehling’s test

This test for reducing sugars is similar to Fehling’s test, where sugars with a free aldehyde or ketone group reduce cupric hydroxide in alkaline solution to red colored cuprous oxide.

benedict’s test

This is the positive result for a Benedict’s test.

red orange color

This reagent contains Ag+ ions in the form of Ag(NH3)2+.

tollen’s reagent

The silver diamine complex is reduced by the presence of free functional groups in the sugars to what form?

metallic silver

This test for reducing sugars has a positive result of the formation of a silver mirror.

tollen’s test

Glucose and fructose reduce Bi(OH)3 formed from bismuth subnitrate into black metallic in this type of medium.

alkaline medium

The presence of a reducing sugar in this test is having a brown to the black coloration of the solution where the metallic bismuth settles down.

nylander’s test

This is a positive result of the nylander’s test.

black precipitate

In this test for reducing sugars, there is a formation of a characteristic osazone crystals when heated with an excess phenylhydrazine.

phenylhydrazine test

This is a positive result of a phenylhydrazine test.

yellow to pale orange osazones

In a phenylhydrazine test, when do monosaccharides give crystals?

on heating

In a phenylhydrazine test, when do disaccharides give crystals?

on cooling

These are the only carbohydrates soluble in boiling water.

maltose and lactose

If glucose is to glucosazone, mannose is to?

mannosazone

This is the shape of galactose’s osazone crystals.

needle shape

If the shape of mannose’s osazone crystals is a bundle of grass that is bloom-like, what about fructose?

hay-like

What is the shape of glucose’s osazone crystals?

bundle of grass

If the osazone crystals of maltose is shaped like a sunflower, what about lactose’s?

puff-ball shape

This is a test used to distinguish reducing monosaccharides from reducing disaccharides.

barfoed’s test

In Barfoed’s test, copper (II) acetate is reduced to

copper (I) oxide

This is a positive result of the Barfoed’s test.

red color

This is a special test for peptide bonds.

bial’s orcinol test

In the presence of concentrated HCl, pentoses form a five member ring also known as

furfural

This reagent contains resorcinol and ferric ions.

bial’s reagent

The positive result of a Bial’s Orcinol Test is a

blue-green solution

This is a special test used to test for the presence of galactose.

mucic acid test

The resultant saccharic acid of galactose that is also insoluble in water and forms crystals is termed

mucic acid

Primary functional group and the secondary alcoholic group are oxidized to what in the presence of concentrated HNO3?

carboxylic group

This is the positive result of a mucic acid test.

white crystals

This is a special test for ketoses.

seliwanoff’s test

The derivatives of hydroxymethyl furfural react with this substance to yield a deep red or cherry red complex.

resorcinol

This process occurs more rapildy to ketoses than to aldoses in the presence of concentrated HCl in a Seliwanoff’s test.

dehydration

This is the positive result of a Seliwanoff’s test.

cherry red color

This special test is used to detect the presence of starch and will turn positive even if the starch present is of the smallest amount.

iodine test

This is formed due to the glucose unit’s trapping of the iodine molecules, forming a dark blue complex.

starch-iodine complex

This is a positive result for the Iodine test.

blue-black solution

Starch is an insoluble state with a blue-black reaction in the first stage of its hydrolysis. What is the color of its reaction if the starch is at a soluble state?

blue-black

With a blue-purple reaction, the soluble starch turns into this substance.

amylodextrine

In the hydrolysis of starch, the color reaction of this stage is red.

erythrodextrine

This is the fifth stage of the hydrolysis of starch, with a colorless color reaction.

archodextrine

This is the sixth stage of hydrolysing starch.

maltose

This is the primary form of starch and the last stage in its hydrolysis.

glucose

This is the other name for the Molisch reagent.

alpha-naphthol

This is the reagent used for the general tests Molisch and Anthrone.

H2SO4

This is the reagent used for Moore’s test.

NaOH

The resultant saccharic acid of galactose that is also insoluble in water and forms crystals is termed

mucic acid