4 Carbs Flashcards

1
Q

Are compounds containing C, H, and O

These are biomolecules that would contain carbon,
hydrogen and oxygen

A

Carbohydrates

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2
Q

Contain C=O and –OH functional groups

Carbonyl contains carbon and oxygen that is connected
by a double bond

In hydroxyl group, we have the presence oxygen
covalently bonded to a hydrogen atom

A

Carbohydrates

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3
Q

Some are reducing substances

Reducing substances: can reduce other compounds
and in order for a certain carbohydrate to be a reducing
substance, it should contain an active aldehyde and
ketone group

Examples: glucose, maltose, fructose, lactose, and
galactose

Non-reducing substances: do not have active an
aldehyde and ketone groups which cannot reduce
other compounds

Example is the most common non-reducing
substance, sucrose or table sugar

A

Carbohydrates

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4
Q

can reduce other compounds
and in order for a certain carbohydrate to be a reducing
substance, it should contain an active aldehyde and
ketone group

A

Reducing substances

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5
Q

do not have active an
aldehyde and ketone groups which cannot reduce
other compounds

A

Non-reducing substances

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6
Q

do not have active an
aldehyde and ketone groups which cannot reduce
other compounds

A

Non-reducing substances

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7
Q

primary source of energy for humans

A

Glucose

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8
Q

contain three carbons

A

Trioses

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9
Q

contain four carbons

A

Tetrose

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10
Q

contain five carbons

A

Pentoses

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11
Q

contain six carbons

A

Hexoses

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12
Q

would have a carbonyl group located on the
terminal part

A

Aldose

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13
Q

would have a carbonyl group located in the
middle and is connected to other carbon atoms

A

Ketose

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14
Q

glucose, fructose, and galactose

simple sugar that cannot be
hydrolyzed into a simpler form

A

Monosaccharides

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15
Q

maltose, lactose, and sucrose

A

Disaccharides

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16
Q

form from the joining of two
carbohydrates molecules or two monosaccharides
joined by glycosidic linkage

A

Disaccharides

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17
Q

raffinose and stachyose

A

Oligosaccharides

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18
Q

(Oligosaccharides)
consists of 1 glucose, 1 fructose, 1 galactose
(trisaccharide)

A

Raffinose

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19
Q

(Oligosaccharides)
2 galactose, 1 fructose, 1
glucose

A

Stachyose (tetrasaccharide)

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20
Q

These are found in sugar bits (malasses) and in whole
grains

A

Oligosaccharides

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21
Q

starch and glycogen

A

Polysaccharides

22
Q

contain more than 10 monosaccharides

A

Polysaccharides

23
Q

Structural arrangement of atoms in a given molecule

A

THE STEREOCHEMISTRY OF THE COMPOUND

24
Q

dextrorotatory (hydroxyl group is located
on the right of fisher projection) / projected on
carbon 5

A

D series (prefix D-)

25
Leverotatory (hydroxyl group is located on the left part of fisher projection) / projected on carbon 5
L series (prefix L-)
26
Glucose is broken down into two- and three-carbon molecules of pyruvic acid that can enter the tricarboxylic acid (TCA) cycle on conversion to acetyl-coenzyme A (acetyl-CoA).
EMBDEN – MEYERHOF PATHWAY
27
This pathway requires oxygen --> aerobic pathway
EMBDEN – MEYERHOF PATHWAY
28
Other substrates can enter in EMP
Glycerol, fatty acids, ketones, some amino acids
29
(EMBDEN – MEYERHOF PATHWAY) is the formation of glucose from non-carbohydrate sources
Gluconeogenesis
30
(EMBDEN – MEYERHOF PATHWAY) is the breaking down of glucose
Glycolysis
31
Conversion of glucose-6-phosphate to 6-phosphogluconic acid, which permits the formation of ribose-5-phosphate and NADPH This pathway permits pentoses to enter the glycolytic pathway Function of NADP: protect the lipid bilayer and other cell enzymes from destruction
HEXOSE MONOPHOSPHATE SHUNT
32
Function of NADP
protect the lipid bilayer and other cell enzymes from destruction
33
Function of NADP
protect the lipid bilayer and other cell enzymes from destruction
34
Glucose is converted to glycogen for storage Glucose-6-phosphate is converted to glucose-1- phosphate, which is then converted to uridine diphosphoglucose and then to glycogen by glycogen synthase
GLYCOGENESIS
35
Once glucose enters a muscle cell, it remains as glycogen unless catabolized (Glycogenolysis) Synthesis of glycogen from glucose to glycogen
GLYCOGENESIS
36
PATHWAYS IN GLUCOSE METABOLISM
Glycolysis Gluconeogenesis Glycogenolysis Glycogenesis Lipogenesis Lipolysis
37
plasma concentration is decreased
Glycolysis
38
increased plasma concentration
Gluconeogenesis
39
glucose concentration is elevated
Glycogenolysis
40
decreased plasma concentration
Glycogenesis
41
glucose concentration will be decreased
Lipogenesis
42
glucose concentration will increase
Lipolysis
43
Two main hormones that control blood glucose: insulin and glucagon produced by pancreas
REGULATION OF CARBOHYDRATE METABOLISM
44
Two main hormones that control blood glucose
insulin and glucagon produced by pancreas
45
Is synthesized by the beta cells of islets of Langerhans in the pancreas
Insulin
46
Normally released when glucose levels are high
Insulin
47
Is responsible for the entry of glucose into the cell
Insulin
48
Regulates glucose by increasing glycogenesis, lipogenesis, and glycolysis and inhibiting glycogenolysis Glycolysis or conversion of glucose from lactate to pyruvate
Insulin
49
“Hypoglycemic agent”
Insulin
50
It inhibits glycogenolysis because glycogenolysis is the formation of glucose from glycogen or the conversion of glycogen into consumable glucose units and you need to remember that insulin is the hormone only hormone that decreases blood sugar level that is why it is known as hypoglycemic agent.
“Hypoglycemic agent”