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Biochem Quiz 4 - Carbs reading Flashcards | StudBud
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Biochem Quiz 4 - Carbs reading
Biochem Quiz 4 - Carbs reading
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Answers
1
Ribose
hexose
pentose
heptose
tetrose
2
The difference in hydroxyl group can make a difference in physical properties such as __
gait
Specific Rotation
melting point
boiling point
3
Maltose
glucose 1 alpha - 3 glucose
glucose 1 alpha - 1 glucose
glucose 1 alpha - 2 fructose
glucose 1 alpha - 4 glucose
4
Anomers
Differ only in their configuration about their carbonyl carbon atom
Oppostie configurations of a hydroxyl group at many positions
Oppostie configurations of a hydroxyl group at 1 position
Mirror images of each other but NOT identify, comparable left and right
5
Which is the most sweet?
sucrose
trehalose
cellobiose
maltose
6
Tablets contianing the enzyme ____ are used as a digestive aids to prevent gas and bloating.
alpha-lactosidase
beta-lactosidase
beta-galactosidase
alpha-galactosidase
7
Carbohydrates include sugars, starches, cellulose and many other compounds found in ____.
nonliving organisms
living organisms
8
Melibiose
glucose 1 beta - 2 fructose
glucose 1 alpha - 6 glucose
glucose 1 beta - 4 glucose
glucose 1 alpha - 4 glucose
9
Oligosaccharides consist of ___ simple sugars
30-40
15-20
2-10
hundreds
10
Many polysaccharides, unlike sugars, are ____ in water.
soluble
insoluble
11
Which German chemist identified the steroismomers for aldohexoses?
Sir Duke
Emil Fischer
Emanuel Smith
Charles Darwin
12
Basic form of carbohydrates
polysaccharides
disaccharides
oligosaccharides
monosaccharides
13
Monosaccharides forming a 6-sided ring
pyranoses
furanoses
pentanoses
hexonoses
14
The chain form of glucose is a polyhydric aldehyde which means ____
many hydroxyl groups and a aldehyde group
a hydroxyl group and a aldehyde group
many hydroxyl groups and many aldehyde groups
many aldehyde groups and a hydroxyl group
15
Sedoheptulose is found in
grapes
honey
carrots
avocados
16
main sugar in milk
trehalose
maltose
lactose
melibiose
17
Most widely distributed sugar in the plant and animal kingdoms
sucrose
fructose
glucose
galactose
18
Mannose
pentose
heptose
tetrose
hexose
19
Undigested lactose ferments in the ___
stomach
colon
liver
GI
20
When the carbonyl group (C=O) is on an inner atom forming a ketone, it is a ___.
aldose
threose
ribose
ketose
21
Sedoheptulose has the same structure as ___, but has ONE extra carbon.
glucose
fructose
sucrose
lactose
22
____ are 1/3 as sweet as sucrose
maltose
cellobiose
maltose
trehalose
23
How many carbons are in a Heptose?
6
4
7
5
24
The main carbohydrate constituents of honey.
glucose
galactose
sucrose
fructose
25
Aldose has a ___ on one end carbon forming an ___
Carbonyl group (C=O) -- Aldehyde group (-CHO)
Amine group (-NH4) -- Carbonyl group (C=O)
Hydroxyl group (-OH) -- Aldehyde group (-CHO)
Aldehyde group (-CHO) -- Amine group (-NH4)
26
Enantiomers
Oppostie configurations of a hydroxyl group at many positions
Oppostie configurations of a hydroxyl group at 1 position
Mirror images of each other but NOT identify, comparable left and right
Differ only in their configuration about their carbonyl carbon atom
27
Yogurt cause lactose intolerance problems.
True
False - lactose is consumed by the bacteria that transform milk into yogurt
28
Most widely distributed sugar in the plant and animal kingdoms
glucose
lactose
galactose
sucrose
29
Mannoheptulose is found in
honey
avocados
grapes
carrots
30
Raffinose is also called ___.
melibiose
melitose
tehalose
maltose
31
product of starch hydrolysis
trehalose
lactose
melibiose
maltose
32
Sedoheptulose and Mannoheptulose
tetrose
hexose
heptose
pentose
33
Has no taste
maltose
trehalose
maltose
cellobiose
34
Which form of glucose is unstable?
boat form
chair form
35
Emil Fischer receiveed a Nobel Prize for his chemistry work in ____.
1852
1919
1902
1910
36
Glucose and Mannose
anomers
epimers
enatiomers
none of the above
37
Specific Rotation
how polarized light is distorted
rotation of plane-polarized light when a light beam is directed through
38
What is the ratio of hydrogen to carbon?
1:2
2:1
1:1
2:3
39
2 simple sugars combined
polysaccharides
monosaccharides
disaccharides
oligosaccharides
40
found in legumes
melibiose
trehalose
maltose
lactose
41
Which form is favored in aqueos solutions and is similar to most sugars?
ring form
chain form
42
How many carbons are in a Pentose?
4
5
3
6
43
What is the ratio of hydrogen to oxygen?
1:2
2:1
1:1
2:3
44
The enzyme alpha-galactosidase is dervied from strains of the grade fungus ____
Ustilago maydis
Aspergillus niger
Aspergillus oryzae
Saccharomyces cervisiae
45
Sterioisomers
differ in temporal arrangement
compound where atoms are linked to a different order
differ in spatial arrangement
compound where atoms are linked to the same order
46
Talose
hexose
heptose
pentose
tetrose
47
Raffinose, "melitose," consists of ____ connected to ___ via 1 alpha - 6 glycosidic linkage.
galactose - sucrose
glucose - sucrose
sucrose - fructose
glucose - fructose
48
Erythrose
heptose
hexose
tetrose
pentose
49
Trehalose
glucose 1 alpha - 1 glucose
glucose 1 alpha - 2 fructose
glucose 1 alpha - 3 glucose
glucose 1 alpha - 4 glucose
50
Raffinose is a ____
polysaccharide
trisaccharide
monosaccharide
disaccharide
51
Lactose has a molecular structure consition of ____
sucrose
glucose
fructose
galactose
52
"blood sugar"
sucrose
glucose
fructose
galactose
53
2 simple sugars of dissachrides
sucrose
glucose
fructose
lactose
54
Main ingredient in turbinado sugar, dried cane juice and brown sugar.
glucose
lactose
fructose
sucrose
55
Glucose
heptose
hexose
pentose
tetrose
56
Sucrose
glucose 1 alpha - 3 glucose
glucose 1 alpha - 1 glucose
glucose 1 alpha - 2 fructose
glucose 1 alpha - 4 glucose
57
Galactose
heptose
hexose
pentose
tetrose
58
The difference in hydroxyl group can make a difference in oranoleptic properties such as __
vision
taste
gait
movement
59
Many saccaride structures differ only in the orientation of the ___.
Amine group (-NH4)
Hydroxyl group (-OH)
Aldehyde group (-CHO)
Carbonyl group (C=O)
60
common table sugar
maltose
trehalose
lactose
sucrose
61
Humans can digest Raffinose
True
False
62
"fruit sugar"
fructose
glucose
galactose
sucrose
63
Where is Raffinose commonly found?
milk, yogurt, cheese
fruits
meat, poultry, fish
beans, peas, cabbage, broccoli
64
The little "D" in the name derives from the fact that natural glucose is ___
double bonded carbon
deoxyribose
dextrorotary
double ringed structure
65
Levulose is also known as ___
glucose
galactose
sucrose
fructose
66
larger number of simple sugars
oligosaccharides
polysaccharides
monosaccharides
disaccharides
67
found in fungi
maltose
trehalose
lactose
melibiose
68
Lactose
glucose 1 beta - 2 fructose
glucose 1 alpha - 4 glucose
glucose 1 alpha - 6 glucose
glucose 1 beta - 4 glucose
69
Monosaccharides forming a 5-sided ring
furanoses
hexonoses
pyranoses
pentanoses
70
Dextrose is known as ___
lactose
glucose
galactose
sucrose
71
Example of a furanoses is ___ and a pyranoses is ___.
glucose -- fructose
ribose -- glucose
frutose -- glucose
ribose -- sucrose
72
How many carbons are in a Tetrose?
5
4
3
6
73
Hexoses molecular formula is ___
C6H2O6
C12H6O6
C6H12O6
C12H6O12
74
Carbohydrates consist of which elements
Carbon
Nitrogen
Oxygen
Hydrogen
75
In nucleic acids, the ____ attached to carbon #1 is replaeced with ____.
carbonyl group -- hydroxyl group
hydroxyl group -- alpha carbon
aldehyde group -- carbonyl group
hydroxyl group -- nucleotide bases
76
Steriochemisty
study of arrangemnt of atoms in 3D space
study of the atomic arrangement of the final product of a chemical reaction
77
Tablet used for digestive aids
lemons
advil
beano
herbal tea
78
How many carbons are in a Hexose?
5
7
6
4
79
Saccharose is also known as ___
fructose
glucose
lactose
sucrose
80
Epimers
Differ only in their configuration about their carbonyl carbon atom
Oppostie configurations of a hydroxyl group at many positions
Mirror images of each other but NOT identify, comparable left and right
Oppostie configurations of a hydroxyl group at 1 position