Major Compounds of the Body Flashcards
glucose is
monosaccharide
fructose is
monosaccharide
galactose is
monosaccaride
sucrose
oligosaccharide
lactose
oligosaccharide
maltose
oligosaccharide
glycogen
polysaccharide
starch
polysaccharide
cellulose
polysaccharide
glucose is a aldose or ketose ?
aldose
fructose is an aldose or ketose ?
ketose
glyceraldehyde is a
triose
erythrose is a
tetrose
ribose is a
pentose
glucose is a
hexose
sedoheptulose
heptose
__________have the same structural formula, but different spatial arrangement of atoms or groups
stereoisomerism
________differ only in configuration around one C atom
epimers
D glucose and D galactose are
epimers
D glucose and D manose and D galactose are
stereoisomerism
D and L glyceraldehyde are
enatntioimers
_________is the only aldose that occurs commonly in nature as a monosaccharide
D glucose
all sugars in the body are (D or L sugars)
D sugars
____________exist mainly as Ring structures
monosaccharides
glucose forms what type of ring
pyranose
fructose forms what type of ring
furanose
oxidation at the 6 carbon produces
GLUCORONIC ACID
oxidation at the 1 carbon produces
gluconic acid
reduction of an aldehyde group produces
poyol
reduction of glucose
sorbitol
reduction of galactose
dulcitol
maltose is produced by
glucose glucose alpha 1,4
maltose is produced by
amlyase digestion of starch
lactose is formed by
galactose and glucose (beta 1,4)
sucrose is formed by
glucose alpha 1,2 fructose
___________is formed when the OH group on the anomeric carbon reacts with OH or NH group of another compound
glycosides
in maltose the glycosidic linkage is
alpha
in lactose the glycosidic linkage is
beta
the linkage of sucrose involves the
anomeric carbon od both monosaccahrides
glycogen is a polymer of
glucose
stach is a polymer of
amylose and amylopectin
linkages in starch are
alpha 1,4
linkages in cellulose are
beta 1,4 glycosidic bonds
cellulose is a polymer of
glucose
characteristics of soluble fiber
soluble, mostly fermented in the colon, delays gastric emptying, reduces post prandial peaks of blood glucose, reduces LDL-C levels
characteristics of insoluble fiber
insoluble in water, partially fermented in the colon, asosciated with reduce type II diabetes risks, promotes laxation, and increases bowel motlity
_____________are biological molecules that are insoluble in water but soluble in organic non-polar solvents
lipids
simple lipids include
fats, oils and waxes
hydolysis of a simple lipid produces
alcohol and fatty acids
in ___________-esters formed between one fatty acid and an alcohol both of which have a long hydrocarbon chain
waxes
in _______-esters formed from glycerol and 3 fatty acids
fats and oils (also known as triacylglycerides)
___________are the most abundant lipids
triacylglycerides
in humans do we have even or odd number carbon chains in fatty acids
even
trans fatty acids are formed when
vegetable oils are hydrogenated such as in margarine production and are a risk factor in atherosclerosis
linoleic acid is a
double unstaurated fatty acid
linolenic acid is a
triunsaturated fatty acid
short chain fatty acid sare
2-4 carbons long
medium chain fatty acids are
4-12 carbons
long chain fatty acid are
12-20 carbons long
_______can be absorbed directly and can diffuse into the mitochondria for oxidation
short and medium chain
_________-are absorbed as micelles and are transported by caritine with fat soluble vitamins
long chain fatty acids
fats are
solid at room temperature and generally from animals
oils are
liquid at room temperature and generally from plants
______have a greater proportion of unsaturated fatty acids, which hav elower melting points than saturaed fatty acids
oils
what type of bond puts a kink in the chain
cis bonds
linoleic acid is a
omega 6 fatty acid
linolenic acid is a
omega 3 fatty acid
EPA and DHA are
omega 3 fatty acids
a high _______ is important for cardiovascular health
high omega 3 to omega 6 ratio
phophoglycerides
alcohol is glycerol
phosphophingoside
alcohol is sphinosine
glycolipids
contain one or more sugar residues
examples of glycolipids include
ceramides and gangliosides
hydrolysis of a phospholipid results in
alcohol, fatty acid, phosphate and a head group (usually a N compound)
hydrolysis of a glycolipid results in a
sphingosine, fatty acid and sguar
removing a fatt acyd from lecithin produces
lysolecithin (snake venom)
sphingosine plus a fatty acid is called a
CERAMIDE
_________–are similar to a sphingolipids but with a carbohydrate group attached to the ceramide
glycolipids
___________modulate many processes such as inflammatory response, hormone production and ion transport
prostaglandins
_________inhibits platelet aggregation and promotes vasodiolation
prostacyclins
_____________-promotes platelet aggregation and vasoconstriction
thromboxanes
___________–are involved in chemotaxis and inflammation and allergic reactions
leukotrienes
_______________-are involved in antiinflammatory and oppose the action of leukotrienes
lipoxins
___________are steroids with one or more OH groups
sterols
what is the most abudant steroid in mammalian tissue
cholesterol
cholesteroal is the precursos for synthesis of
steroid hormones, bile acids, and vitamin D
wht are the fat soluble vitamins
ADEK
_________-can be synthesized from cholesterol with adequate sunlight
vitamin D