WATER, PH AND MACROMOLECULES QUIZ

gasoline (heptanes & octanes)

sodium chloride

argon

methane

butanol

octanol

ethanol

methanol

are rarely found in living systems

will always have a pH of 7

tend to maintain a relatively constant pH.

cause a decrease in pH when acids are added to them.

make nonpolar covalent bonds with the positively charged ions only

share electrons with the ions to make polar covalent bonds

form hydrogen bonds with the positively and negatively charged ions

surround the ions because of their charge but do not form hydrogen bonds

its conjugate base

a hydronium ion

its conjugate acid

highly reactive

pKa values greater than 2

that cannot be used to buffer

been seldom found in living systems

values less than 1

covalent

hydrogen

noncovalent

ionic

bases donate hydrogen ions in water while acids accept hydrogen ions

acids are polar molecules and bases are not

bases are polar molecules and acids are not

acids donate hydrogen ions in water while bases accept hydrogen ions

DNA

Strong base

Protein

Phospholipid

Polar substances that can form hydrogen bonds will dissolve in it

Nonpolar substances like oils are not soluble in it

All of these

It is critical for many of the chemical processes found in living systems