Biochemistry Midterms Exam Flashcards
1
Q
- carbs not true
A
D. All carbs may undergo hydrolysis
2
Q
- no carbs or is not a carbs
A
C.coconut oil
3
Q
- ffl monosaccharides are the most common on terms of the human body
A
A.the hexoses
4
Q
- on hydrolysis, a disaccharide yields
A
A.2 monosaccharides
5
Q
- A monosaccharide is never a
A
B.diose
6
Q
- monosaccahrids undergo the ffl except
A
B.hydrolysis
7
Q
- the following test may be used to determine he glucose of reducing sugar in the
A
C.Molisch Test
8
Q
- The following sugars will reduce AgNo3 to elemtnal Ag except
A
B.sucrose
9
Q
- What makes the aldoses different from the ketoses
A
D. They differ in the location of the carbonyl-function group in the molecule
10
Q
- These are compounds with the samel moleculat formulat but different chemical structures that are mirror images
A
A. Isomers
11
Q
- These are compounds having the same structural formula but differing in configuration about one carbon atom
A
A. Optical Isomers
12
Q
- Which of the following correctly defines chirality
A
A. The superimposability of an objects on its mirror image
13
Q
- Which monosaccharide is otherwise known as glyceorse
A
A. A
14
Q
- commonly known as dextrose
A
B. D
15
Q
- pair of enantiomers
A
16
Q
16.
A
17
Q
17.
A
18
Q
- Classified as ketotetrose
A
B. C and G
19
Q
- Identify the aldohexose
A
C. DFI
20
Q
20.
A
21
Q
21.
A
C.
22
Q
- Which compound has no chiral carbon atom
A
B. B
23
Q
- Which pentose is a component of RNA
A
B. L
24
Q
- the following hexoses are physiologically important except
A
C. H
25
25. The simplest Ketose is
B. B
26
26. Which does not belong to the group
A. sorbose
27
27. Which of the following is not a ketose
B. Galactose
28
28. The followin monosaccharise are aldoses EXCEPT
C. Ribulose
29
29. Which of the following statements is true about glyceraldehyde and dihydroxyacetone
C. They have same molecular formula
30
20. Which of the following is not true about compounds A and B
B. They can be both aldose and ketose
31
31. how many possible optical isomers does L-Erythrulose have?
B. 2
32
32. Haworth's projection for D-Sorbose is
C. Pentagonal
33
33. How many optical isomers will a Ketopentose have?
C. 4
34
34. Which of the following is an epimeric pair
B. d glucose and D galactose
35
35. The minimum number of carbon atoms required for a ketose to have a cyclic structure is
A. 3
36
36. Structure represents Haworth's projection of a D-glucose
D.
37
37. Which structure represents Haworth's projection of B-D-Ribose
C
38
38. Which structure represents Haworth's projection of a-0-0alactose?
A
39
39. sructure represents Haworth's projection of B-Deoxyribose?
B.
40
40. Complete the structure sucrose+H20
A. glucose + fructose
41
41. Glucose + CuO + NaOH + heat -> ___ + Cu20
B. Gluconic Acid
42
42.
C. Sorbitol
43
43.
D. Ethanol
44
44.
C Sorbitol
45
45. lactose + yeast ->
d. neither a nor b
46
46. The bond linking together two monosaccharides forming a disaccharide is known as
glyosidic bond
47
47. Which of the following wilyield glactose upon hydrolysis
C. Lactose
48
48. Which disaccharide is only slightly soluble in water
A. sucrose
49
49. Which dissaccharide is formed through an A -1,4 glycolisys linkege
B. Mattose
50
50. This carb does not undergo fermentaion in the presence of yeast
C. Lactose
51
51. In sucrose, a glucose is linked to B-Fructose through a
A. a, B - 1,2 - glycosidic linkage
52
52. When a-glucose bonds with B-glucose, B-Maltose is produced, The linkage is
C. a-1,4 - glycosidic linkage
53
53. Which of the following illustrates the bond formation in a-maltose
C.
54
54
A.
55
55
B.
56
56
C.
57
57. Which of the following explains why sucrose is a non-reducing sugar?
C. Both a and b
58
58. Which polysaccharide functions as a blood anticoagulant?
A. Heparin
59
59. Which is stored in the lover and muscle and turns red upon reaction with iodine?
B. glycogen
60
60. Intermediate between starch and Maltose and used in the preparation of adhesives
C. Dextrin
