MCQExams
0:0:1
CBSE
JEE
NTSE
NEET
Practice
Homework
×
practice
Carbohydrates Quiz
hydroxy- aldehydes/ketones (aka, polyhodroxy aldehydes and polyhydroxy ketones)
Report Question
0%
what does the "L-" and "D-" label apply to on the enantiomer itself?
0%
carbohydrates have a large number of what kind of functional groups?
0%
what is an ester? what is its general structure?
0%
what are sugars called when they contain 3, 4, 5, and 6 carbons?
single polyhydroxy aldehyde/ ketone unit
Report Question
0%
what is glycogen?
0%
what is a disaccharide?
0%
what is a glycosidic bond?
0%
what is a monosaccharide?
aldehydes in a sugar contain prefix "aldo-"ketones in a sugar contain prefix "keto-"(for example: glucose, a six carbon sugar which contains an R-CHO, or aldehyde, group, is an "aldohexose"; ribulose, a five carbon sugar contains an R1-C=O \ R2, a ketone, is a "ketopentose")
Report Question
0%
What is the difference between an "α- hydroxyl" and a "β- hydroxyl" pyranose ring?
0%
how does a straight monosaccharide cyclize into a ring (which carbons are active)?
0%
how does benedict's test work?
0%
how do we indicate the presence of an aldehyde or ketone group in a sugar?
D-fructose
Report Question
0%
what is an ester? what is its general structure?
0%
what is the smallest monosaccharide?
0%
what is an oligosaccharide?
0%
what is an example of a furanose ring?
The intersection of two lines
Report Question
0%
what represents a chiral carbon?
0%
what are the different types of monosaccharides?
0%
what are carbohydrates?
0%
what is an oligosaccharide?
at or near the top
Report Question
0%
what is the smallest monosaccharide?
0%
what is the main difference between glucose and galactose?
0%
what do hemiacetals and hemiketals react with alcohol to form?
0%
where is the carbonyl carbon placed in carbohydrates?
tetrahedral
Report Question
0%
what type of sugar the major storage form of D-glucose in plants?
0%
What do aldehydes and ketones with alcohols react to form?
0%
what geometric shape does an L- or D- Glyceraldehyde molecule take?
0%
what does the "L-" and "D-" label apply to on the enantiomer itself?
a "Pyranose" (pi-ran-ose) ring (a cyclic hemiacetal or hemiketal)
Report Question
0%
What is the difference between an "α- hydroxyl" and a "β- hydroxyl" pyranose ring?
0%
what is the general name of the ring formed during monosaccharide cyclization?
0%
what does the "L-" and "D-" label apply to on the enantiomer itself?
0%
what does the hydrolysis of disaccharides in presence of dilute acid (or specific enzymes) yield?
most monosaccharides are aldoses. most monosaccharides belong to the D- series.
Report Question
0%
are most monosaccharides aldoses or ketoses? which series do most natural monosaccharides belong to (D- or L-)?
0%
What main change occurs during the cyclization of a monosaccharide into a Pyranose ring?
0%
what is the general name of the ring formed during monosaccharide cyclization?
0%
what is a disaccharide?
carbon 5 adds to the aldehyde group of carbon 1; predominantly cyclic hemiacetals/hemiketals
Report Question
0%
how does a straight monosaccharide cyclize into a ring (which carbons are active)?
0%
what does the hydrolysis of disaccharides in presence of dilute acid (or specific enzymes) yield?
0%
what are sugars called when they contain 3, 4, 5, and 6 carbons?
0%
what is an ester? what is its general structure?
hemiacetals and hemiketals
Report Question
0%
What do we call monosaccharides which form 5-membered rings?
0%
what is the main difference between glucose and galactose?
0%
what is the smallest monosaccharide?
0%
What do aldehydes and ketones with alcohols react to form?
each of a pair of molecules that are mirror images of each other.
Report Question
0%
what is a chiral carbon?
0%
what is an ester? what is its general structure?
0%
what is an enantiomer?
0%
what is a glycosidic bond?
beginning with a properly drawn monosaccharide chain...draw the ring with its oxygen to the backput the anomeric carbon (C-1) on the right sidethe terminal -CH2OH group (C-6) is always shown above the ring for D-monosaccharides
Report Question
0%
What are the steps to drawing monosaccharides forming Pyranose and Furanose rings (Halworth Structures)?
0%
what is another name for a the C-1 carbon on a Pyranose or Furanose ring?
0%
what does the "L-" and "D-" label apply to on the enantiomer itself?
0%
what is lactose intolerance?
differs in the orientation of -OH group attached to C-4
Report Question
0%
what is the main difference between glucose and galactose?
0%
what does the hydrolysis of disaccharides in presence of dilute acid (or specific enzymes) yield?
0%
what is the general name of the ring formed during monosaccharide cyclization?
0%
where is the carbonyl carbon placed in carbohydrates?
glucose, fructose, galactose
Report Question
0%
what are carbohydrates?
0%
what are the different types of monosaccharides?
0%
What do aldehydes and ketones with alcohols react to form?
0%
what are the functions of carbohydrates?
hemiacetal sugar + alcohol ---> acetal ring + H2O
Report Question
0%
generally describe glycoside formation
0%
What do aldehydes and ketones with alcohols react to form?
0%
what is a glycosidic bond?
0%
describe the similar structure of D-aldoses
OR |R-- C --OH | R
Report Question
0%
what is the smallest monosaccharide?
0%
previous review: generally describe a carbonyl group with R functional groups
0%
what is the general structure of a hemiacetal?
0%
where is the carbonyl carbon placed in carbohydrates?
Furanose ring
Report Question
0%
what color is the reaction between a polysaccharide and iodine?
0%
what do hemiacetals and hemiketals react with alcohol to form?
0%
What do we call monosaccharides which form 5-membered rings?
0%
what is the main difference between glucose and galactose?
D-glyceraldehyde.
Report Question
0%
what are the different types of monosaccharides?
0%
what is the smallest monosaccharide?
0%
where is the carbonyl carbon placed in carbohydrates?
0%
what are two starch fractions?
two monosaccharide units linked together by the acetal or ketal linkages
Report Question
0%
what is a polysaccharide?
0%
what is a disaccharide?
0%
what is a monosaccharide?
0%
what is an enantiomer?
the "anomeric" carbon
Report Question
0%
What do aldehydes and ketones with alcohols react to form?
0%
what does the "L-" and "D-" label apply to on the enantiomer itself?
0%
what is another name for a the C-1 carbon on a Pyranose or Furanose ring?
0%
what is the general name of the ring formed during monosaccharide cyclization?
Disaccharidecommon sugar; composed of glucose and fructose joined by an "α-" linkage from C-1 of glucose and a "β-" linkage from C-2 of fructose
Report Question
0%
describe sucrose
0%
what is galactosemia?
0%
describe lactose
0%
what is a glycoside?
R1|C=O|R2
Report Question
0%
what is another name for a the C-1 carbon on a Pyranose or Furanose ring?
0%
previous review: generally describe a carbonyl group with R functional groups
0%
what color is the reaction between a polysaccharide and iodine?
0%
What do we call monosaccharides which form 5-membered rings?
the oxygen of the carbonyl group at the top will point to the side which goes above.
Report Question
0%
when drawing the D-aldoses (example, d-glucose), how do you determine which side of the polyhydroxide rungs will cycle to the above side of the cyclic formation ring?
0%
what are sugars called when they contain 3, 4, 5, and 6 carbons?
0%
carbohydrates have a large number of what kind of functional groups?
0%
what does the hydrolysis of disaccharides in presence of dilute acid (or specific enzymes) yield?
Disaccharidetwo glucose units joined by a glycoside (C-O-C) linkage between C-1 on the first glucose and C-4 on the second unit; has an "α-" gylcosidic linkage between glucose units (linkage points below).
Report Question
0%
describe maltose
0%
describe amylose
0%
describe sucrose
0%
describe lactose
Disaccharidecomposed of one molecule of D-galactose and one of D-glucose; linkage between units is "β-" (1--->4)
Report Question
0%
describe lactose
0%
what is galactosemia?
0%
describe sucrose
0%
describe maltose
when two monosaccharide rings are bonded using a C-O-C bond
Report Question
0%
what is a disaccharide?
0%
what is an oligosaccharide?
0%
what is a glycosidic bond?
0%
what is a chiral carbon?
long unbraced chain of D-glucose units connected by an "α-" (1--->4) linkages
Report Question
0%
what is glycogen?
0%
describe the similar structure of D-aldoses
0%
describe amylose
0%
what is a polysaccharide?
hydrolysis of disaccharides yields monosaccharide units
Report Question
0%
what does the hydrolysis of disaccharides in presence of dilute acid (or specific enzymes) yield?
0%
What are the steps to drawing monosaccharides forming Pyranose and Furanose rings (Halworth Structures)?
0%
what is the main difference between glucose and galactose?
0%
what is the general name of the ring formed during monosaccharide cyclization?
polysaccharide
Report Question
0%
what type of sugar the major storage form of D-glucose in plants?
0%
what color is the reaction between a polysaccharide and iodine?
0%
What do we call monosaccharides which form 5-membered rings?
0%
what is another name for a the C-1 carbon on a Pyranose or Furanose ring?
the most important polysaccharide and most abundant compound in nature; provides rigidity and strength to plant cell walls; consists of D-glucose units linked by "β-" (1-->4) linkage
Report Question
0%
what is lactose intolerance?
0%
what is galactosemia?
0%
what is a glycosidic bond?
0%
what is cellulose?
3-10 monosaccharide units (less common)
Report Question
0%
what is an oligosaccharide?
0%
what is a disaccharide?
0%
what is a chiral carbon?
0%
what is a monosaccharide?
a carbonyl adjacent to an ether linkage. General formula: R-C=O | OR
Report Question
0%
what is an ester? what is its general structure?
0%
what is an enantiomer?
0%
what is a chiral carbon?
0%
what is the general name of the ring formed during monosaccharide cyclization?
deep blue
Report Question
0%
What do we call monosaccharides which form 5-membered rings?
0%
what color is the reaction between a polysaccharide and iodine?
0%
what do hemiacetals and hemiketals react with alcohol to form?
0%
what type of sugar the major storage form of D-glucose in plants?
genetic disease (autosomal recessive) in which an enzyme needed to metabolize galactose is deficient or absent; typically develops shortly after birth
Report Question
0%
what is lactose intolerance?
0%
what is benedict's test?
0%
what is cellulose?
0%
what is galactosemia?
aldehydes and ketones having adjacent -OH groups are readily oxidized; open chain and cyclic forms of monosaccharides are readily oxidized
Report Question
0%
what is a glycoside?
0%
what is lactose intolerance?
0%
how does benedict's test work?
0%
how do we indicate the presence of an aldehyde or ketone group in a sugar?
at the top, H-C=O. at the bottom, CH2OH. Differences are in carbons rungs in between.
Report Question
0%
describe the similar structure of D-aldoses
0%
where is the carbonyl carbon placed in carbohydrates?
0%
what are the functions of carbohydrates?
0%
what is an ester? what is its general structure?
cellulose, sugars, starch
Report Question
0%
what are the different types of monosaccharides?
0%
what are carbohydrates?
0%
what is a chiral carbon?
0%
what is a monosaccharide?
0:0:1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
0
Answered
0
Not Answered
0
Not Visited
Correct : 0
Incorrect : 0
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqexams.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page