Biochemistry lab 5
Exploring Biochemistry: Reducing Sugars and Starch
Welcome to the Biochemistry Lab 5 Quiz! This quiz will test your knowledge on the fascinating world of carbohydrates, particularly focusing on reducing sugars, starch, and their properties. Dive into the world of biochemistry and see how well you understand these crucial molecules!
- Learn about reducing sugars and their reactions.
- Understand the structure and fun
ction of amylopectin and glycogen. - Explore various testing methods used in carbohydrate analysis.
Reducing sugars can reduce Tollens solution to:
Shiny silver mirror
Red ppt of cuprous oxide
Purple ring
Brownish to green complex
Fructose is reducing sugar because the ketone group can be converted to aldehyde group by which of the following mechanism?
Dihydroxylation
Dehydration
Isomerization
Redox system
Which of the following is correct regarding Amylopectin?
It has 1,4 glycosidic bond only
It has no branches
It has 1,6 glycosidic bond only
It represents 80% of starch
It is similar to amylopectin with more highly branched (with branches every 10-15 glucose units) and much larger
Glucose
Amylose
Glycogen
Amylopectin
What is the name of the test to check whether it is reducing or non-reducing sugars
Benedict's test
Iodine test
Molisch test
Seliwanoff's test
What is the reagent name of Benedict's test?
Iodine solution
Anthrone
Alkaline solution of cupric citrate complex
Conc. HNO3
When Iodine test used with potato rich of starch it will give which color?
Blue
Green
Reddish-brown color
Purple
Iodine test will give reddish brown color with which of the following sugars?
Starch
Glycogen
Cellulose
Fractose
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