Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements:
(1) Glucose is both a hexose and a ketose.
(2) There can never be more than two enantiomers for a molecule.
(3) All common disaccharides have beta-one-four linkages.

Question

Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: 
(1) Glucose is both a hexose and a ketose.
(2) There can never be more than two enantiomers for a molecule.
(3) All common disaccharides have beta-one-four linkages.

Quizplus · Accepted Answer

(1) Glucose cannot be both a hexose and a ketose since it is only a hexose. This statement is FALSE.
(2) This statement is also FALSE. Some molecules can have more than two enantiomers, such as molecules with multiple chiral centers.
(3) This statement is also FALSE. Common disaccharides can have different linkages, such as alpha-one-four or alpha-one-six. Therefore, only one statement is true.

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