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BIOCHEMISTRY > Biochemistry Midterms Exam > Flashcards

Biochemistry Midterms Exam Flashcards

1
Q
  1. carbs not true
A

D. All carbs may undergo hydrolysis

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2
Q
  1. no carbs or is not a carbs
A

C.coconut oil

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3
Q
  1. ffl monosaccharides are the most common on terms of the human body
A

A.the hexoses

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4
Q
  1. on hydrolysis, a disaccharide yields
A

A.2 monosaccharides

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5
Q
  1. A monosaccharide is never a
A

B.diose

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6
Q
  1. monosaccahrids undergo the ffl except
A

B.hydrolysis

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7
Q
  1. the following test may be used to determine he glucose of reducing sugar in the
A

C.Molisch Test

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8
Q
  1. The following sugars will reduce AgNo3 to elemtnal Ag except
A

B.sucrose

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9
Q
  1. What makes the aldoses different from the ketoses
A

D. They differ in the location of the carbonyl-function group in the molecule

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10
Q
  1. These are compounds with the samel moleculat formulat but different chemical structures that are mirror images
A

A. Isomers

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11
Q
  1. These are compounds having the same structural formula but differing in configuration about one carbon atom
A

A. Optical Isomers

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12
Q
  1. Which of the following correctly defines chirality
A

A. The superimposability of an objects on its mirror image

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13
Q
  1. Which monosaccharide is otherwise known as glyceorse
A

A. A

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14
Q
  1. commonly known as dextrose
A

B. D

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15
Q
  1. pair of enantiomers
A
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16
Q

16.

A
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17
Q

17.

A
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18
Q
  1. Classified as ketotetrose
A

B. C and G

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19
Q
  1. Identify the aldohexose
A

C. DFI

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20
Q

20.

A
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21
Q

21.

A

C.

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22
Q
  1. Which compound has no chiral carbon atom
A

B. B

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23
Q
  1. Which pentose is a component of RNA
A

B. L

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24
Q
  1. the following hexoses are physiologically important except
A

C. H

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25
Q
  1. The simplest Ketose is
A

B. B

26
Q
  1. Which does not belong to the group
A

A. sorbose

27
Q
  1. Which of the following is not a ketose
A

B. Galactose

28
Q
  1. The followin monosaccharise are aldoses EXCEPT
A

C. Ribulose

29
Q
  1. Which of the following statements is true about glyceraldehyde and dihydroxyacetone
A

C. They have same molecular formula

30
Q
  1. Which of the following is not true about compounds A and B
A

B. They can be both aldose and ketose

31
Q
  1. how many possible optical isomers does L-Erythrulose have?
A

B. 2

32
Q
  1. Haworth’s projection for D-Sorbose is
A

C. Pentagonal

33
Q
  1. How many optical isomers will a Ketopentose have?
A

C. 4

34
Q
  1. Which of the following is an epimeric pair
A

B. d glucose and D galactose

35
Q
  1. The minimum number of carbon atoms required for a ketose to have a cyclic structure is
A

A. 3

36
Q
  1. Structure represents Haworth’s projection of a D-glucose
A

D.

37
Q
  1. Which structure represents Haworth’s projection of B-D-Ribose
A

C

38
Q
  1. Which structure represents Haworth’s projection of a-0-0alactose?
A

A

39
Q
  1. sructure represents Haworth’s projection of B-Deoxyribose?
A

B.

40
Q
  1. Complete the structure sucrose+H20
A

A. glucose + fructose

41
Q
  1. Glucose + CuO + NaOH + heat -> ___ + Cu20
A

B. Gluconic Acid

42
Q

42.

A

C. Sorbitol

43
Q

43.

A

D. Ethanol

44
Q

44.

A

C Sorbitol

45
Q
  1. lactose + yeast ->
A

d. neither a nor b

46
Q
  1. The bond linking together two monosaccharides forming a disaccharide is known as
A

glyosidic bond

47
Q
  1. Which of the following wilyield glactose upon hydrolysis
A

C. Lactose

48
Q
  1. Which disaccharide is only slightly soluble in water
A

A. sucrose

49
Q
  1. Which dissaccharide is formed through an A -1,4 glycolisys linkege
A

B. Mattose

50
Q
  1. This carb does not undergo fermentaion in the presence of yeast
A

C. Lactose

51
Q
  1. In sucrose, a glucose is linked to B-Fructose through a
A

A. a, B - 1,2 - glycosidic linkage

52
Q
  1. When a-glucose bonds with B-glucose, B-Maltose is produced, The linkage is
A

C. a-1,4 - glycosidic linkage

53
Q
  1. Which of the following illustrates the bond formation in a-maltose
A

C.

54
Q

54

A

A.

55
Q

55

A

B.

56
Q

56

A

C.

57
Q
  1. Which of the following explains why sucrose is a non-reducing sugar?
A

C. Both a and b

58
Q
  1. Which polysaccharide functions as a blood anticoagulant?
A

A. Heparin

59
Q
  1. Which is stored in the lover and muscle and turns red upon reaction with iodine?
A

B. glycogen

60
Q
  1. Intermediate between starch and Maltose and used in the preparation of adhesives
A

C. Dextrin

BIOCHEMISTRY (5 decks)

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