what is a ph scale for?
a pH scale measure the concentration of hydrogen ions within a solution
how can ph be measured?
ph can be measured with either an indicator or a ph meter
ph indicator
naturally occuring
approximate
anthocyanine= red cabbage
ph meter
very sensitive
very accurate
measured electrical charge
what is a buffer?
chemical compound that resists change in ph
buffer capacity
degree to which a chemical is capable of resisiting change in ph
nucleic acid monomer
-nucleotides
phosphate
sugar
nitrogenour base (5)
nitrogenous bases (5)
cyostine
uracil (RNA)
thymine (DNA)
guanine
adenine
nitrogenous base rules
they can only bind with one other one.
what are the two main polymers of nucleic acids?
ribose in RNA
deoxyribose in DNA
protein monomer
amino acids
-20 within our body
-versitile and extremely important
what does protein help with structurally?
-collagen composes tendons
-keratin composes hair
how does protein help functionally?
hemoglobin carries oxygen through blood stream
protein (3 groups)
nonpolar
polar
charged
protein monomer is defined by what?
R side chain
(what makes each amino acid unique)
amino acids primary sctructure
a chain of balls in a squiggle line
amino acids secondary structure
pleated sheets and alpha helix
amino acids tertiary structure
hydrophobic and electro static
ball of squiggly lines
amino acids quaternary structure
more than one amino acid group clumped together
the function of a protein has to do with what?
its STRUCTURE
lipid monomer
fatty acid
lipid polymer
triglyceride
- formed by 3 fatty acid chains on a carbon hydrogen backbone
lipids are…
hydrophobic
most important are=
triglycerides
phospholipids
steroids
saturated lipids
does not contain carbon-carbon double bonds
