carbohydrate questions Flashcards
1
Q
composition of carbohydrates
A
C,H,O and N,P or S
2
Q
function of carbohydrates
A
food and energy source, signal transduction, protection, lubricant in joints and skin, cell-cell recognition, components of DNA/RNA
3
Q
chiral carbon
A
C attached to 4 different things
4
Q
dihydroxyacetone
A
no chiral C
5
Q
D- or L- determination
A
L- spells CORN clockwise; only C farthest from C=O is designated
6
Q
epimers
A
differ chiral carbons at one C
7
Q
glucose and galactose
A
differ at C4; epimers
8
Q
A
alpha-D-glucose
9
Q
A
beta-D-glucose
10
Q
A
alpha-D-galactose
11
Q
A
beta-D-glucose
12
Q
cellulose and chitin monomers
A
beta-1,4 linkage are in the same plane which allows adjacent monomers to bind to each other rather than water, making them rigid
13
Q
polysaccharide synthesis
A
no template, determined by enzymes
