Group 4 Quiz

1. Which of the following functional groups is the most prevalent in carbohydrates?

• Hydroxyl group (-OH)

• Carbonyl group (C=O)

• Amino group (NH2)

• Carboxyl group (COOH)

2. Which of the following is a common form of cyclic structure found in carbohydrates?

• Furanose

• Pyranose

• Both A and B

• None of the above

3. Which of the following is a characteristic of the furanose form of carbohydrates?

• It has a five-membered ring.

• It is found in the five-carbon sugar ribose.

• Both A and B

• None of the above

4. Which of the following is a characteristic of the pyranose form of carbohydrates?

• It has a six-membered ring.

• It is found in the six-carbon sugar glucose.

• Both A and B

• None of the above

5. Which of the following is the difference between the alpha and beta configurations of carbohydrates?

• The alpha configuration has the hydroxyl group on the anomeric carbon on the opposite side of the neighboring substituent, while the beta configuration has the hydroxyl group on the same side.

• The alpha configuration is more stable than the beta configuration.

• The alpha configuration is more common in naturally occurring carbohydrates, while the beta configuration is more common in synthetic carbohydrates.

• All of the above

6. Which of the following is an example of an epimer of glucose?

• Galactose

• Mannose

• Both A and B

• None of the above

7. What is optical activity?

• The ability of a substance to rotate the plane of polarization of polarized light.

• The ability of a substance to absorb light at a specific wavelength.

• The ability of a substance to emit light at a specific wavelength.

• None of the above

8. Which of the following carbohydrates is optically active?

• Glucose

• Fructose

• Both A and B

• None of the above

9. What is a chiral carbon atom?

• A carbon atom that is bonded to four different atoms.

• A carbon atom that is bonded to four identical atoms.

• A carbon atom that is bonded to four different atoms, and the four atoms are arranged in a tetrahedral manner.

• None of the above

10. What is the difference between enantiomers and diastereomers?

• Enantiomers are mirror images of each other, while diastereomers are not.

• Enantiomers have the same physical properties, while diastereomers have different physical properties.

• Enantiomers have the same chemical properties, while diastereomers have different chemical properties.

• All of the above