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Biochem Lab Midterm > Experiment 6 > Flashcards

Experiment 6 Flashcards

(47 cards)

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1
Q

What is experiment 6 all about?

A

Carbohydrates part 1 (Monosaccharide and Disaccharide)

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2
Q

Simpler sugar are highly soluble in water, less soluble in ethanol anr insoluble in either

A

Monosaccharides

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3
Q

Cannot hydrolyzed to simpler units

A

Monosaccharide

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4
Q

Are hydrates of carbon with molecular formula

A

Carbohydrates

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5
Q

What is the formula of carbohydrates

A

(CH2O) n or Cn(H2O) n

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6
Q

What group do aldoses belong

A

Aldehyde group

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7
Q

What group do ketoses belong

A

Keto group

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8
Q

____ and ____ notations are used to describe the configuration of carbohydrates

A

D, L

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9
Q

What are the two trioses

A

Glyceraldehyde and dihydroxy acetone

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10
Q

Composed of one sugar units are also known as simple sugar

A

Monosaccharide

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11
Q

Is composed of two monosaccharide units

A

Disaccharide

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12
Q

It is usually 2 to 10 monosaccharide units

A

Oligosaccharide

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13
Q

Are the polymers of the simple sugar usually more than 10 Monosaccharide

A

Polysaccharides

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14
Q

Is the main type of sugar in the blood and is the major source of energy for the body cells

A

Glucose

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15
Q

Known as the brain sugar that supports the brain development of infants

A

Galactose

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16
Q

A fruit sugar and a simplest ketonic sugar it is the sweetest naturally occurring carbohydrates

A

Fructose

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17
Q

It is present in malt the juice from sprouted barley and other cereal grains

A

Maltose

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18
Q

Principal sugar that present in milk

A

Lactose

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19
Q

Is a non-reducing sugar also known as table sugar

20
Q

A test for the presence of carbohydrates

Study These Flashcards
A

Moore’s test

21
Q

A general test for carbohydrates

22
Q

A test used to differentiate ketohexoses from aldohexoses

Study These Flashcards
A

Seliwanoff’s test

23
Q

It involves the formation of for for all derivatives in the presence of concentrated hydrochloric acid
A test used to specifically detect galactose and lactose in a sample solution

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A

Phloroglucinol HCl test

24
Q

A test that uses bismuth subnitrate which is reduced to block precipitate bismuth when reacted with reducing sugar

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A

Nyelinders test

25
Is a test like benedict test for reducing sugars
Trommer's test
26
Is also known as silver mirror test
Tollens test
27
A test for aldehydes
Fehling's Test
28
A very sensitive test done in mildly alkaline condition
Benedict's Test
29
A test used to distinguish monosaccharide disaccharide and oligosaccharide
Barfoeds test
30
Test for ketoses and aldoses
Phenylhydrazine reaction
31
The color of molisch test is due to the reaction of
alpha-napthol
32
In solubility test what is the result of different kinds of sugars in water
All is freely soluble
33
In solubility test what is the result of different kinds of sugar in 10% NaCl
Soluble
34
What is the result of different kind of sugar in 0.25% of HCl
Soluble
35
What is the result of different kinds of sugar in 95% ethyl alcohol
Slightly soluble
36
What is the result of molisch test in different kinds of sugar
All glucose, fructose, sucrose and lactose turn into purple to red violet
37
What is the result of seliwanoffs test in different kinds of sugar
Glucose and lactose turns faint pink and fructose and sucrose turns red
38
What is the result of phloroglucinol-HCl test in different kinds of sugar
Glucose fructose and sucrose turn into brown solution while lactose turns red
39
And phenlyhydrazine reaction what is the result of glucose
Bundles of hay or needle like
40
In phenlyhydrazine reaction what is the result of fructose
Bundles of hay
41
In phenlyhydrazine reaction what is the result of lactose
Powder puff or puff ball shape
42
In phenlyhydrazine reaction what is the result of sucrose
No osazone crystals since sucrose is non reducing sugar
43
What is the result of barfoed's test in different kinds of sugar
Both glucose and fructose have brick red precipitate while the lactose and sucrose stays in its blue solution
44
In benedict's test what is the result of different kinds of sugar
In glucose fructose and lactose there is a brick red precipitate while sucrose have blue solution
45
What is the result of different kinds of sugar in trommers test
Glucose fructose and lactose have brick red precipitate while sucrose has colorless solution
46
What is the result of different kinds of sugar in nylanders test
Glucose fructose and lactose has black precipitate while sucrose has colorless solution
47
In tollens test what is the result of different kinds of sugar
All glucose fructose lactose and sucrose have silver mirror

Biochem Lab Midterm (5 decks)

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