Exam 25: Biomolecules: Carbohydrates

Exhibit 25-4 From the sugars below,choose the one that best fits each description below.Place the letter of the sugar in the blank to the left of the description.There is only one correct answer for each question. -_____ a sugar which yields a single alditol upon reduction.

Exhibit 25-11 Consider the reaction below to answer the following question(s). -Refer to Exhibit 25-11.Q and Z are cyclic examples of:

Exhibit 25-3 Refer to the monosaccharides below to answer each of the following question(s): Classify each sugar by type;for example,glucose is an aldohexose. -Refer to Exhibit 25-3.Xylulose is _____.

For a hypothetical aldoheptose with 5 chirality centers,how many stereoisomers are possible?

Exhibit 25-8 Draw structures for the products you would expect to obtain from reaction of β-D-galactopyranose with each of the following reagents.Be sure to include all relevant stereochemistry. β-D-galactopyranose -H₃O⁺

What relationships exists between the following two substances? Atoms other than carbon and hydrogen are labeled. ​ ​ ​ ​

Exhibit 25-8 Draw structures for the products you would expect to obtain from reaction of β-D-galactopyranose with each of the following reagents.Be sure to include all relevant stereochemistry. β-D-galactopyranose -CH₃OH,HCl

Exhibit 25-11 Consider the reaction below to answer the following question(s). -Refer to Exhibit 25-11.The process by which anomer Q is converted into a mixture of both anomers is called:

Exhibit 25-6 Refer to the sugars below to answer the following question(s).Choose the sugar that best fits each description and place the letter of the sugar in the blank to the left of the description.There is only one correct answer for each question,but sugars may be used more than once. -_____ a ketose with two chirality centers

What is the correct structure for α-D-glucopyranose?

This question was omitted on the printed copy.This placeholder question is here to maintain the numbering system integrity between the printed copy and ExamView.Therefore,it has been marked "do not use on test" in ExamView's question information dialog.As a result,this placeholder question is automatically prevented from being chosen as a test question.

The intermediate common to both chain lengthening and shortening of a simple sugar is a(n):

Exhibit 25-8 Draw structures for the products you would expect to obtain from reaction of β-D-galactopyranose with each of the following reagents.Be sure to include all relevant stereochemistry. β-D-galactopyranose -NaBH₄ in H₂O

Exhibit 25-9 Choose a structure from the list provided below that best fits each of the following descriptions.Place the letter of the structure in the blank to the left of the description.There is only one correct answer for each question. -_____ cellulose

Exhibit 25-6 Refer to the sugars below to answer the following question(s).Choose the sugar that best fits each description and place the letter of the sugar in the blank to the left of the description.There is only one correct answer for each question,but sugars may be used more than once. -_____ a dextrorotary hexose

Which of the following is correct as applies to the essential carbohydrates?

Exhibit 25-12 Below is the structure of the antigenic determinant for the blood group B.Use this structure to answer the following question(s). -Refer to Exhibit 25-12.Put a BOX around the 1,3'-glycosidic linkage.

Exhibit 25-2 Label each pair of stereoisomers below as: -_____

Exhibit 25-9 Choose a structure from the list provided below that best fits each of the following descriptions.Place the letter of the structure in the blank to the left of the description.There is only one correct answer for each question. -_____ a 1,4' β-glycoside

Examine the following molecular models.Atoms other than carbon and hydrogen are labeled. ​ ​ ​ ​ Which of the following correctly describes these substances?