ph and molecules
charges common in the body
H+
Na+
k+
Cl-
Ca2+
ph
ph means how many hydrogen ions are in a solution
neutral=pH 7 above 7= alkaline below7= acidic
carbohydrates
to provide enegy,glucose for cells
lipids
do not dissolve in water
proteins
made of amino acids
structural proteins
provides strenghth
hormones
insulin
contracile proteins
allows shortening of muscle cells
antibodies
provides protection/dedence againsg bacteria and foreign cells
haemoglobin
transports oxygen in the red blood cells
enzymes
speeds up chemical reactions