Mac 7: 2-J-2 Flashcards
True or False
The sucrose does not react with Fehling’s reagent.
-True
True or False
Tollen’s test is used to differentiate aldehydes from ketones. Aldoses will test positive because aldehydes are easily oxidized while ketones do not
-True
Maltose is a disaccharide composed of glucose and _____.
-Glucose
True or False
Barfoed’s test is used to determine the presence of monosaccharide a. Therefore, it will only test positive for glucose and sucrose
-False
The enzyme responsible for the hydrolysis of starch is _____.
-Amylases
_____ is a kind of disaccharide that is commonly found in large amount of milk
-Lactose
True or False
Trommer’s test involves treating a sample with a strong acid (sulfuric acid) which results in the acid hydrolysis of disaccharides into mono-saccharides.
-True
True or False
Inulin, (C6H10O5)x, is found in the bulb of onions and garlic
-True
True or False
The reagents for Seliwanoff’s test are mercaptoethanol and concentrated NaOH.
-False
True or False
In Molisch test, A red violet (purple) ring is formed at the junction of two layers.indicates the presence of glucose
-True
True or False
Seliwanoff’s test is used to differentiate ketose from aldoses (reacts with ketose). Fructose is an aldose sugar while sucrose is composed of 2 glucose residues.
-False
The compound that precipitates in Benedict’s test is
-Cu2O
True or False
Heterocellulose is a group of carbohydrates which differs from cellulose in that they are hydrolyzed upon boiling with mineral acids; however unlike other polysaccharides, they are not readily digested by amylase.
-False
_____ test is a test for sugar which the unknown solution turns into a dark blue solution.
-Iodine
