phosphorous Flashcards
1
Q
orthophosphate key points
A
tetrahedral structure almost all phosphorus in bones also present as phospholipids in cell membrane controls protein activity forms backbone of DNA / RNA
2
Q
5 phosphorus containing biomolecules and structure
A
hydoxylapetite - bone structure phospholipids - cell membrane structure protein - control activity nucleotides (ATP/NAD) - energy transfer nucleic acids (DNA/RNA) - genes:inheritance/expression
3
Q
phosphoric acid
A
H+ attached to the 3 O’s
4
Q
dihydrogen phosphate
A
H+ attached to 2 O’s
5
Q
hydrogen phosphate
A
H+ attached to 1 O
6
Q
phosphate (orthophosphate) structure
A
P attached to 3 O-
7
Q
pKa
A
pH where the amount of each molecule is equal
amount of acid = amount of conjugate base
8
Q
ester
A
condensation of acid and alcohol
acid + alcohol = ester + water
9
Q
phosphomonoester
phosphodiester
phosphotriester
A
alcohol attached to 1 , 2 or 3 oxygens
10
Q
anhydride
A
condensation of 2 acid molecules
11
Q
phosphoric acid + phosphoric acid =
A
pyrophosphate + h2O
