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- 1. Multiple Choice
The principal storage form of carbohydrates in the mammalian body
Starch
Glucose
Glycogen
Fructose
- 2. Multiple Choice
Percentage of glycogen found in the muscles
6%
8%
5%
1%
- 3. Multiple Choice
Monosaccharides are bonded with a _________ to form polysaccharides.
Amino bond
Glycosidic bond
Peptide bond
Hydrogen bond
- 4. Multiple Choice
What atoms make up all carbohydrates?
Carbon, Hydrogen, Sulfur
Carbon, Hydrogen, Oxygen
Carbon, Oxygen, Nitrogen
Carbon, Sodium, Hydrogen
- 5. Multiple Choice
A carbohydrate with a polyhydroxy aldehyde structure
Aldase
Ketase
Aldose
Ketose
- 6. Multiple Choice
A carbohydrate with a polyhydroxy ketone structure
Aldase
Ketose
Ketase
Aldose
- 7. Multiple Choice
The following are materials used in the Isolation of Liver Glycogen experiment, EXCEPT:
95% Ethanol
Sand
5% TCA
Table sugar
- 8. Multiple Choice
Natural starches are mixture of what molecules
Amylase and Amylopectic acid
Amylase and Amylopectin
Amylose and Amylopectin
Ammonia and pectin
- 9. Multiple Choice
How many percent does Amylopectin found in starch?
80 - 90%
10 - 20%
30 - 40%
50 - 60%
- 10. Multiple Choice
Arrange the procedures given here for the Isolation of plant starch from start to finish
I. Strain using the cheesecloth. Discard the residue and then collect the filtrate.II. Peel of the plant covering. Cut and comminute the sample.
III. Decant the solution slowly. Wash it once with water, using the decantation process.
IV. Mix well. Add 30mL of water and mix well.
II, III, IV, I
II, IV, III, I
II, IV, I, III
II, I, IV, III
- 11. Multiple Choice
Property of disaccharide when mixed with water
Soluble
Slightly soluble
Insoluble
- 12. Multiple Choice
The relative sweetness of lactose
100%
16%
32.5%
173.3%
- 13. Multiple Choice
The relative sweetness of Fructose
100%
16%
32.5%
173.3%
- 14. Multiple Choice
The physical appearance of Cellulose
White crystalline
Amorphous powder
Fibrous
- 15. Multiple Choice
What is the purpose of adding Sulfuric acid to a sugar molecule?
To precipitate
To dehydrate
To crystallize
To dissolve
- 16. Multiple Choice
This test will give purple or violet coloured ring at the junction as the positive result for carbohydrates.
Molisch test
Anthrone test
Iodine test
Barfoed test
- 17. Multiple Choice
This test will give bluish green color as the positive result for carbohydrates.
Molisch test
Anthrone test
Iodine test
Seliwanoff test
- 18. Multiple Choice
This test will give positive result for ketohexoses.
Barfoed Test
Osazone formation
Seliwanoff's test
Bial's Orcinol test
- 19. Multiple Choice
This test will give blue green colored complex as the positive result for the presence of pentoses.
Bial's orcinol test
Fehling's Test
Seliwanoff's Test
Barfoed Test
- 20. Multiple Choice
Other name for Osazone test
Sodium acetate test
Kowarsky test
Glacial acetic test
Fehling's Test
- 21. Multiple Choice
This test is highly specific for galactose
Osazone formation
Mucic acid test
Barfoed Test
Bial's Orcinol Test
- 22. Multiple Choice
Primary element found in every Fehling's reagent
Iron
Copper
Sulfur
Magnesium
- 23. Multiple Choice
The following are the sugars that formed needle shaped or broomstick crystals during Osazone test, EXCEPT:
Galactose
Xylose
Glucose
Fructose
- 24. Multiple Choice
The following are the sugars that formed brick red precipitate during Barfoed test, EXCEPT:
Sucrose
Lactose
Glucose
Fructose
- 25. Multiple Choice
The color of the positive result for Iodine test
Blue - violet
Yellow - orange
Pink
Green
- 26. Multiple Choice
What color indicates a positive Molisch test for carbohydrates?
RedPurple or violetGreenBlue - 27. Multiple Choice
Which test specifically detects reducing sugars?
Iodine testMucic acid test
Molisch test
Benedict's test - 28. Multiple Choice
In the Iodine test, which color change indicates the presence of starch?
From yellow-orange to blue-black
From green to black
From red to yellow
From blue-black to yellow-orange
- 29. Multiple Choice
What does a positive Barfoed’s test indicate?
Presence of polysaccharides
Presence of monosaccharides
Presence of proteins
Presence of ketones
- 30. Multiple Choice
Which test detects the presence of pentoses in a solution?
Iodine testBial's testBenedict's testFehling's test - 31. Multiple Choice
Which reagent is used in the Molisch test to detect carbohydrates?
Resorcinol
Alpha-naphtholPhenol
Orcinol
- 32. Multiple Choice
In the Seliwanoff’s test, a rapid formation of a cherry-red color indicates the presence of:
Fructose (a ketose)Lactose (a disaccharide)Xylose (an aldose)
Glucose (an aldose) - 33. Multiple Choice
What is the positive result of the Fehling’s test for reducing sugars?
Formation of a yellow precipitate of copper(I) sulfide.Formation of a red precipitate of copper(I) oxide (Cu2O).No change in color of the solution.Formation of a blue solution of copper(II) sulfate. - 34. Multiple Choice
During an experiment, a solution tested positive for the Molisch test and the Seliwanoff’s test. However, it gave a negative result with the Barfoed’s test. What type of carbohydrate is likely present in the solution?
A monosaccharide
A disaccharide with a ketose component
A pentose sugar
A polysaccharide
- 35. Multiple Choice
Which test distinguishes between lactose and sucrose based on reducing properties?
Benedict's testSeliwanoff test
Iodine testMolisch test
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