carbs Flashcards

1
Q

empirical formula of carbohydrates

A

CHO

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2
Q

Carbohydrates are composed of what molecules linked together? Because they contain

A

sugar (saccharides)

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3
Q

Cheapest source of cellular fuel in the form of ATP / energy

A

Carbohydrates

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4
Q

2 groups of carbohydrates

A
  1. polyhydroxy aldehydes
  2. polyhydroxy ketones
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5
Q

polyhydroxy aldehydes carbonyl group

A

terminal carbon atom

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6
Q

polyhydroxy ketones carbonyl group

A

second carbon atom

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7
Q

importance/functions of carbs

A
  1. major source of cellular fuel
  2. structural component of living cells
  3. building materials
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8
Q

containing only 1 saccharide unit

A

monosaccharides

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9
Q

suffix

A

'’ose’’

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10
Q

contain the same number of atoms of the same element but differ in the structural arrangement and properties

A

isomers

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11
Q

two sugars which differ only in the configuration around a single C atom

A

epimers

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12
Q

4 different radicals are attached

A

asymmetric carbon

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13
Q

same molecular and structural formula but differ in the orientation of atoms

A

stereoisomerism

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14
Q

the ability to form two sugars (mirror of each other)

A

enantiomers

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15
Q

the change in optical rotation to achieve equilibrium

A

mutarotation

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16
Q

2 mutarotations

A
  1. dextrorotatory (right)
  2. levorotatory (left)
17
Q

different monosaccharides

A
  1. glucose
  2. galactose
  3. mannose
  4. fructose
18
Q

most abundant sugar found in the blood stream ; grape sugar, blood sugar, plasma sugar

19
Q

brain sugar ; not natural sugar

20
Q

natural ketohexose ; sweetest of all sugars (honey)

21
Q

combination of two monosaccharides

A

disaccharides

22
Q

disaccharides

A
  1. sucrose
  2. lactose
  3. maltose
  4. cellobiose
23
Q

1 glucose + 1 fructose ; table sugar ; artificial sweeteners

24
Q

1 glucose + 1 galactose ; milk

25
glucose + glucose ; alcoholic sugar
maltose
26
complex structures of carbohydrates ; contains many monosaccharide units
polysaccharides
27
carbohydrates with similar repeating units
homopolysaccharides
28
upon hydrolysis; yields sugar and sugar derivatives
heteropolysaccharides
29
dietary carbohydrates
1. starch 2. sucrose 3. cellulose 4. lactose 5. glycogen 6. pentosan
30
simple diffusion sugar
pentose
31
active transport sugar
glucose and galactose
32
veins of GIT
1. superior mesenteric veins 2. splenic veins 3. inferior mesenteric veins
33
serves to capture the monosaccharides in the cells
phosphorylation
34
enzymes of phosphorylation
hexokinases