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BIOCHEM LAB > EX 9 > Flashcards

EX 9 Flashcards

(66 cards)

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1
Q
  • most significant source of energy
  • provide storage energy
  • important cellular component
  • important structural component
A

CARBOHYDRATES

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2
Q

made up of one sugar unit

A

monosaccharide

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3
Q

made up of two monosaccharide

A

disaccharides

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4
Q

short polymers of usually three to ten monosaccharides unit

A

oligosaccharides

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5
Q

long polymers of monosaccharides

A

polysaccharides

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6
Q

2-carbon sugar

A

hydroxyacetaldehyde

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7
Q

3- carbon sugar

A

glyceraldehyde

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8
Q

4-carbon sugar

A

erythrose

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9
Q

5-carbon sugar

A

ribos

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10
Q

7-carbon sugar

A

sedoheptulose

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11
Q

9-carbon sugar

A

neuraminic acid

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12
Q

6-carbon sugar

A

glucose

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13
Q

sucrose + fructose

A

sucrose

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14
Q

glucose + galactose

A

lactose

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15
Q

glucose + glucose

A

maltose

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16
Q

fructose + galactose

A

lactulose

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17
Q

3 glucose units

A

maltotriose

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18
Q

several sugar units

A

dextrin

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19
Q

structural polysaccharide units in plants

A

cellulose

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20
Q

structural polysaccharide units in animals

A

chitin

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21
Q

storage polysaccharide units in plants

A

starch

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22
Q

water-soluble starch

A

hetastarch

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23
Q

storage polysaccharide units in animals

A

glycogen

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24
Q

polyfructan of fructofuranose

A

inulin

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25
homoplyglucan of a-1,6 bond
dextran
26
present in **vitreous humor** & **synovial fluid**
hyaluronic acid
27
present in **cartilage**, **tendons**, & **ligaments**
chondroitin sulfate
28
present in **skin**
dermatan sulfate
29
present in **nails**
keratan sulfate
30
an **anticoagulant**
heparan sulfate
31
found in **seaweeds**
agarose
32
present in **bacterial cell wall**
peptidoglycan
33
**most tests** in **carbohydrates** **rely** on the _____
interaction of a reducing sugar
34
the ____ of sugars under **alkaline conditions** is an important consideration in reduction tests
enolization
35
**general test** for **carbohydrates**
MOLISCH'S TEST
36
# **MOLISCH'S TEST** result
purple ring at the junction
37
tests for **reducing sugars**
FEHLING'S TEST BENEDICT'S TEST
38
# **FEHLING'S TEST** result
brick red ppt
39
**blue** aqueous solution **cupric sulfate pentahydrate**
FEHLING'S A
40
**clear** aqueous solution **potassium sodium tartrae or Rochelle salt** | NaOH or KOH
FEHLING'S B
41
* test for **reducing sugars** * **semi-quantitative** test
BENEDICT'S TEST
42
dsitnguish **reducing monosaccharides** from **disaccharides**
BARFOED'S TEST
43
# **BARFOED'S TEST** reacts **very fast**
MONOSACCHARIDES
44
# **BARFOED'S TEST** reacts **very slowly**
DISACCHARIDES
45
# **BARFOED'S TEST** the **reducing monosaccharide** is
scanty brick red ppt
46
test for **ketohexoses**
SELIWANOFF'S TEST
47
distinguish **glucose** and **fructose**
SELIWANOFF'S TEST
48
# **SELIWANOFF'S TEST** result
cherry red solution
49
# **SELIWANOFF'S TEST** reacts **faster**
fructose
50
test for **pentoses**
BIAL'S TEST
51
# **BIAL'S TEST** result | pentoses
blue colored soln
52
# **BIAL'S TEST** **hexoses** produces what color
green, red, or brown
53
**invert sugar** is a mixture of
glucose & fructose
54
# **HYDROLYSIS TEST (INVERSION OF SUCROSE)** test result
brick red ppt
55
used to differentiate sugars depending on the **shape** of the **osazone crystals formed**
PHENYLHYDRAZINE TEST
56
# **PHENYLHYDRAZINE TEST** **glu**cose **fru**ctose **man**nose
NEEDLE SHAPED
57
# **PHENYLHYDRAZINE TEST** **galac**tose
RHOMBIC PLATES
58
# **PHENYLHYDRAZINE TEST** **mal**tose
SUNFLOWER-SHAPED
59
# **PHENYLHYDRAZINE TEST** **lactose**
powder puff / hedgehog shaped
60
test for polysaccharides particularly **sugar** & **glycogen**
IODINE TEST
61
# **IODINE TEST | RESULTS** **amylose**
blue
62
# **IODINE TEST | RESULTS** **amylopectin**
purple
63
# **IODINE TEST | RESULTS** **glycogen**
reddish brown
64
# **IODINE TEST | RESULTS** **amylo**dextrin
violet
65
# **IODINE TEST | RESULTS** **eryhtro**dextrin
red
66
# **IODINE TEST | RESULTS** **achro**dextrins
no color

BIOCHEM LAB (11 decks)

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