Epimers - Study guides, Class notes & Summaries

Which of the following monosaccharides is a ketose? Dihydroxyacetone Galactose Glucose Glyceraldehyde Idose -dihydroxyacetone When two carbohydrates are epimers: One is a pyranose, the other a furanose One is an aldose, the other a ketose They differ in length by one carbon They differ only in the configuration about one carbon atom They react differently with iodine -They differ only in the confirmation about one carbon atom -D.) alpha-D-glucose and bet

M4: Problem Set Due No due date Points 5 Questions 16 Time Limit None Attempt History Attempt Time Score LATEST Attempt 1 30 minutes 5 out of 5 Score for this quiz: 5 out of 5 Submitted Apr 20 at 12:08am This attempt took 30 minutes. Question 1 0 / 0 pts Your Answer: Is the following molecule an aldose or ketose? Briefly explain. There is a C=O on the third carbon from the top, making this molecule a ketose. PORTAGE LEARNING M4: M4 PROBLEM SET BIOCHEMISTRY ketose. There is a C=O on...

What is free energy? correct answers Energy available to do work What is the difference between exothermic and endothermic reactions? correct answers Exothermic releases heat, endothermic absorbs heat What is reaction coupling? correct answers Linking exothermic and endothermic reactions to drive unfavorable reactions What is Le Chetalier's Principle? correct answers System will shift to counteract stress How do you calculate free energy of coupled reactions? correct answers Add the...

Biochem Module 4 Exam 1. which of the following monosaccharides is not an aldose? a. erythrose b. dihydroxyacetone c. glucose d. glyceraldehyde e. ribose b. dihydroxyacetone 2. when two monosaccharides are epimers: a. they differ only in the configuration about the penultimate carbon b. one is an aldose, the other a ketose c. they differ only in the configuration about one carbon atom d. they form o-glycosidic bonds e. they are oligosaccharides c. they differ only in the configur...

Phosphatase correct answers This myosin-actin interaction forms the basis of the cross-bridge cycle (CBC), which causes muscle contraction, as in skeletal -bridge cycling (CBC) requires phosphorylation of the myosin light chain (LC20). A .............. is an enzyme that removes a phosphate group from its substrate composed of actin and are dynamic and are lengthen by polymerization or shortened by depolarization correct answers microfilaments are provide strucule support for the cell ...

What are the linear polysaccharides? - ACCURATE ANSWERS amylose, cellulose What are the branched polysaccharides? - ACCURATE ANSWERS glycogen and starch How do you calculate the amount of stereoisomers in a sugar? - ACCURATE ANSWERS n chiral centers= 2^n stereoisomers What denotes a D sugar from an L sugar in the linear conformation? - ACCURATE ANSWERS D: last OH group on right L: last OH group on left What are epimers? - ACCURATE ANSWERS stereoisomers that differ only in configurat...

How are monosaccharides classified? What are the 3 sugars of interest? What kind of monosaccharides are they? Correct Answer-They are classified by their number of C atoms. *Glucose, Fructose, and Galactose* are the most important monosaccharides. They are hexoses What is an epimer? Describe the epimer relationship between galactose, glucose, and mannose. Correct Answer-2 molecules with a different configuration around a single asymmetric carbon atom. Galactose and mannose are not e...

Which of the following monosaccharides is a ketose? Dihydroxyacetone Galactose Glucose Glyceraldehyde Idose -dihydroxyacetone When two carbohydrates are epimers: One is a pyranose, the other a furanose One is an aldose, the other a ketose They differ in length by one carbon They differ only in the configuration about one carbon atom They react differently with iodine -They differ only in the confirmation about one carbon atom -D.) alpha-D-glucose and bet

Properties of waxes → low melting points, stable solids, appear in both plants and animals in nature → a wax coat protects the surface of many plant leaves from water loss and attack from microorganisms What defines a carbohydrate? → aldehydes & ketones with many OH groups, or substances that form these when hydrolyzed Where do carbohydrates come from? → primary products of photosynthesis- extracts carbon from atmosphere and creates carbs out of that carbon How are monosacc...

Primary function of carbohydrates Answer- Fuel for body - energy and biosynthesis Classification of carbohydrates Answer- - aldoses vs ketoses - number of carbons (ex: triose = 3 carbons) Constitutional isomers Answer- same molecular formula, different connectivity Stereoisomers Answer- Compounds with the same structural formula but with a different arrangement of the atoms in space. Enantiomers Answer- mirror images of each other Distereomers Answer- stereoisomers that are not mir...