monosaccharides and disaccarides Flashcards
what do all organic compounds contain
carbon atoms
how many bonds does a carbon atom make
4 bonds so it can join with up to four other atoms
what shape does the four bonds of carbon make
tetrahedral shape and leads to formation of branched chains or rings or any 3D shape
monomers
small molecules
polymer
large molecules
monosaccharides
simple sugars with one oxygen atom and two hydrogen atoms for each carbon atom present
general formula for monosaccharides
(CH2O)n
triose sugars molecular formula
C3H6O3
pentose sugars molecular formula
C5H10O5
importance of triose sugars
important in mitochondria where glucose is broken down into triose sugars during respiration
hexose sugars molecular formula
C6H12OG
importance of pentose sugars
ribose and deoxyribose are important in the nucleic acids DNA and RNA which make up genetic material
importance of hexose sugars
taste sweet and include glucose
galactose and fructose
what type of sugar is ribose
a pentose sugar
disaccharides
made up of to monosaccharides
how do to monossacharides join
through a condensation reaction
whats a glycosidic bond
bond between two monosaccharides thats covalent
isomer
molecules with the same chemical formula but different molecular structure
reducing sugars
sugars that react with benedicts solution and reduce copper ions to copper one ions to gove orange red precipitate
non reducing sugars
sugars that dont react with benedicts sugars
name 3 disaccharides
sucrose
lactose
maltose
source of sucrose
stored in plants such as sugar cane
source of lactose
milk sugar
main carb found in milk
source of maltose
found in germinating seeds like barley
monosaccharides that make up sucrose
alpha glucose and fructose
monosacahrides that make up lactose
alpha glucose and beta galactose
monosaccharides that make up maltose
alpha glucose and alpha glucose
3 hexose monosaccharides
glucose
fructose
galactose
what type of isomer is alpha glucose
cis isomer
what type of isomer is beta glucose
trans isomer
relate the structure of glucose to its function
small and water soluble- travel easily in bloodstream
-complementary shape to antiport for co transport for absorption in the gut
-complementary shape to enzymes for glycolysis is respiratory substrate
difference between structure of glucose and maltose
glucose mono and maltose di