Question 1

When D-ribose is treated with nitric acid, it forms

Accepted Answer

A)   a racemic mixture of aldonic acids
B)   a meso aldaric acid
C)   an optically active aldaric acid
D)   an optically active aldonic acid
E)   a meso aldonic acid

Question 2

Which of the following is an aldopentose?

Accepted Answer

A)   D-galactose
B)   D-fructose
C)   D-ribose
D)   D-glucose
E)   D-xylulose

Question 3

Provide the reagents necessary to carry out the following conversion.

Accepted Answer

The answer of Provide the reagents necessary to carry out...

Question 4

When D-glucose is treated with aqueous NaOH it undergoes_______.

Accepted Answer

A)   mutarotation
B)   oxidation
C)   glycoside formation
D)   epimerization
E)   none of these

Question 5

Identify the most common aldohexose.

Accepted Answer

The answer of Identify the most common aldohexose....

Question 6

Anomers of D-fructofuranose differ in stereochemistry at ____ carbon.

Accepted Answer

A)   C1
B)   C2
C)   C3
D)   C4
E)   C5

Question 7

Which of the following compounds is(are)  an epimer(s)  of D-glucose?

Accepted Answer

A)   I
B)   II
C)   I and III
D)   II andIV
E)   I and II

Question 8

Which of the following pairs of D-aldohexoses would produce the same product when subjected to Wohl degradation?

Accepted Answer

A)   D-glucose and D-galactose
B)   D-mannose and D-galactose
C)   D-glucose and D-gulose
D)   D-allose and D-altrose
E)   D-glucose and D-allose

Question 9

Identify the monosaccharide(s) in $\alpha$-maltose.

Accepted Answer

two <img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30">-D-glu...

Question 10

Which one of the following is the correct Fischer projection for D-gulose?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   V

Question 11

Which of the following disaccharides is (are)  not a reducing sugar(s) ?

Accepted Answer

A)   sucrose
B)   maltose
C)   lactose
D)   cellobiose
E)   None of these

Question 12

Predict the product(s)  for the following Kiliani-Fischer synthesis.

Accepted Answer

A)   D-ribose and D-arabinose
B)   D-glucose and D-galactose
C)   D-altrose and D-mannose
D)   D-galactose and D-talose
E)   D-gulose and D-iodose

Question 13

Provide the structure for uridine.

Accepted Answer

The answer of Provide the structure for uridine....

Question 14

Plants convert carbon dioxide and water into glucose in the presence of sunlight via ________.

Accepted Answer

A)   hydrolysis
B)   retrosynthesis
C)   Killiani synthesis
D)   photosynthesis
E)   none of these

Question 15

Predict the product(s)  for the following Kiliani-Fischer synthesis.

Accepted Answer

A)   I and V
B)   II and IV
C)   I and III
D)   III and IV
E)   II and V

Question 16

Draw the chair conformation of $\alpha$-D-galactopyranose.

Accepted Answer

The answer of Draw the chair conformation of $\alpha$-D-galactopyranose....

Question 17

Draw the Fisher projection for L-glucose.

Accepted Answer

The answer of Draw the Fisher projection for L-glucose....

Question 18

What is the difference between a nucleoside and a nucleotide?

Accepted Answer

A)   A nucleotide is a phosphorylated nucleoside.
B)   A nucleoside is a phosphorylated nucleotide.
C)   A nucleotide is a deoxynucleoside.
D)   A nucleoside is a deoxynucleotide.
E)   none of these

Question 19

Which of the following statement(s)  best describe the main difference between maltose and cellobiose?

Accepted Answer

A)   Maltose has a  β\betaβ -1-4 glycosidic linkage and cellobiose has an  α\alphaα -1-4 glycosidic linkage.
B)   Maltose is comprised of  β\betaβ -D-glucopyranose and cellobiose is comprised of  α\alphaα -D-glucopyranose.
C)   Maltose is comprised of  α\alphaα -D-glucopyranose and cellobiose is comprised of  β\betaβ -D-glucopyranose.
D)   Maltose has an  α\alphaα -1-4 glycosidic linkage and cellobiose has a  β\betaβ -1-4 glycosidic linkage.
E)   C and D

Question 20

An optically active D-aldohexose was treated with NaBH4/H2O and produced an optically inactive alditol. When the same D-aldohexose was subjected to Wohl degradation followed by HNO3 it produced an optically inactive aldaric acid. Provide the structure of this D-aldohexose.

Accepted Answer

Exam 24: Carbohydrates

Which of the following pairs of D-aldohexoses would produce the same product when subjected to Wohl degradation?

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Plants convert carbon dioxide and water into glucose in the presence of sunlight via ________.

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Which of the following compounds is(are) an epimer(s) of D-glucose?

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Provide the structure for uridine.

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Predict the product(s) for the following Kiliani-Fischer synthesis.

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Which one of the following is the correct Fischer projection for D-gulose?

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When D-glucose is treated with aqueous NaOH it undergoes_______.

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Anomers of D-fructofuranose differ in stereochemistry at ____ carbon.

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When D-ribose is treated with nitric acid, it forms

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An optically active D-aldohexose was treated with NaBH4/H2O and produced an optically inactive alditol. When the same D-aldohexose was subjected to Wohl degradation followed by HNO3 it produced an optically inactive aldaric acid. Provide the structure of this D-aldohexose.

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Predict the product(s) for the following Kiliani-Fischer synthesis.

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Which of the following is an aldopentose?

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Draw the Fisher projection for L-glucose.

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Provide the reagents necessary to carry out the following conversion.

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What is the difference between a nucleoside and a nucleotide?

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Which of the following statement(s) best describe the main difference between maltose and cellobiose?

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Identify the monosaccharide(s) in α\alphaα -maltose.

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Draw the chair conformation of α\alphaα -D-galactopyranose.

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Which of the following disaccharides is (are) not a reducing sugar(s) ?

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Identify the most common aldohexose.

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An optically active D-aldohexose was treated with NaBH₄/H₂O and produced an optically inactive alditol. When the same D-aldohexose was subjected to Wohl degradation followed by HNO₃ it produced an optically inactive aldaric acid. Provide the structure of this D-aldohexose.

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Identify the monosaccharide(s) in $\alpha$ -maltose.

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two -D-glu...
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Draw the chair conformation of $\alpha$ -D-galactopyranose.

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