$$\text{C}_{12}\text{H}_{22}\text{O}_{11} + \text{H}_2\text{O} \rightarrow 2\text{C}_6\text{H}_{12}\text{O}_6$$

Question 1

Which of the following best describes the difference between D-glucose and L-glucose?

Accepted Answer

D-glucose and L-glucose differ in the orientation of the hydroxyl group on carbon 5.

Question 2

Which of the following is a correct Haworth representation of $$	ext{\alpha}-D-$$glucose?

Accepted Answer

The anomeric hydroxyl group is below the plane of the ring.

Question 3

Which carbohydrate is best known as a reducing sugar and why?

Accepted Answer

Lactose, because it contains a free anomeric carbon.

Question 4

Which of the following is a correct Fischer projection of D-glucose?

Accepted Answer

The hydroxyl group on carbon 3 is on the left.

Question 5

Which of the following statements about the structure of ATP is correct?

Accepted Answer

ATP contains three phosphate groups attached to a ribose sugar.

Question 6

Which type of lipid is considered 'highly soluble in water'?

Accepted Answer

Phospholipids

Question 7

Which of the following is the correct representation of a saturated fatty acid?

Accepted Answer

A hydrocarbon chain with only single bonds between carbon atoms.

Question 8

Which of the following statements about the hydrolysis of ATP is correct?

Accepted Answer

Hydrolysis of ATP releases energy and produces ADP and inorganic phosphate.

Question 9

Which of the following is a correct description of the peptide bond?

Accepted Answer

A bond formed between the carboxyl group of one amino acid and the amino group of another.

Question 10

Which of the following is a correct formula for the hydrolysis of a disaccharide?

Accepted Answer

$$	ext{C}_{12}	ext{H}_{22}	ext{O}_{11} + 	ext{H}_2	ext{O} ightarrow 2	ext{C}_6	ext{H}_{12}	ext{O}_6$$

Question 11

Which of the following amino acids is classified as a basic amino acid?

Accepted Answer

Lysine

Question 12

Which of the following is a correct description of the function of enzymes?

Accepted Answer

Enzymes decrease the activation energy required for a reaction.

Question 13

Which of the following is a correct formula for the combustion of glucose?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O}$$

Question 14

Which of the following is a correct description of the structure of a steroid?

Accepted Answer

A molecule with four fused rings.

Question 15

Which of the following is a correct description of the role of NAD+ in metabolism?

Accepted Answer

NAD+ acts as an electron carrier in redox reactions.

Question 16

Which of the following is a correct description of the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids contain only single bonds, while unsaturated fatty acids contain at least one double bond.

Question 17

Which of the following is a correct description of the function of glycogen in the human body?

Accepted Answer

Glycogen serves as a long-term energy storage molecule in muscles and liver.

Question 18

Which of the following is a correct description of the role of insulin in carbohydrate metabolism?

Accepted Answer

Insulin decreases blood glucose levels by promoting glucose uptake.

Question 19

Which of the following is a correct description of the role of hemoglobin in the human body?

Accepted Answer

Hemoglobin transports oxygen from the lungs to tissues.

Step-by-Step Guidance for GOB College Exam Review: Carbohydrates, Lipids, Amino Acids, and Enzymes

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