Question

(a) Monosaccharides are classed as the simplest sugars, and generally consist of _____ to _____ carbon atoms.

(b) A monosaccharide is a ketopentose if it has a _______ functional group and _____ carbon atoms in the chain.

(c) The following fisher diagram shows which stereoisomer (enantiomer) of the monosaccharide?

(d) The bond formed between two monosaccharides, creating a disaccharide, is called a ____________.

(e) When two monosacchrides join to form a disaccharide the bond occurs between the _____ carbon atom on the first molecule and the _____ carbon atom on the second molecule.

(f) Cellulose is an unbranched polymer of which monosaccharide?

(g) The monosacchrides that make up cellulose are joined together by which form of bond? Alpha or beta?

(h) In the cyclic form of glucose, which carbon atom is known as the anomeric carbon?

(i) The glucose molecule can exist in equilibrium as 3 different forms. What term is used to describe this?

(j) Which polysaccharide is the major form produced by humans?

Answer 1

I hope these answers help you...

a. 3, 7 (fact)   

b. ketone, 5 (evident from name)

c. No diagram given in question

d. glycosidic bond (fact)

e. first, fourth (basically the bond is 1,4-glycosidic bond)

f. beta-D-glucose

g. beta

h. The first carbon. (An anomeric carbon is a carbon that, in the acyclic form, is not a stereocenter, but once it takes on the cyclic form, it becomes a stereocenter)

i. isomerism

j. glycogen

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