How To Analyse Chemical Composition? Flashcards
to perform chemical analysis, we take any living tissue and grind it in _____ acid using a mortar and a pestle
trichloroacetic
all the carbon compounds that we get from living tissues can be called
biomolecules
amino acids which have one amino group and one acidic group on the alpha carbon are called
alpha amino acids
alpha amino acids are substituted _________ (an alkane)
methane
the designated R group can be which groups
hydrogen
carboxyl group
amino group
variable group
how many amino acids occur in proteins
20
name of amino acid if R group is hydrogen
glycine
name of amino acid if R group is methyl group
alanine
name of amino acid if R group is hydroxy methyl group
serine
example of acidic amino acid
glutamic acid
example of basic amino acid
lysine
example of neutral amino acid
valine
examples of aromatic amino acids
tryosine
phenylalanine
tryptophan
a particular property of amino acids is the ionizable nature of which groups
-NH2 and -COOH
what happens to amino acids in solutions of different pHs?
their structure changes
are lipids generally soluble in water
no
a fatty acid has a ______ group attached to an R group
carboxyl
maximum number of carbons that a fatty acid could have
20 including carboxyl carbon
number of carbon atoms in palmitic acid
16 including carboxyl carbon
number of carbon atoms in arachidonic acid
20 carbon atoms
types of fatty acids
saturated
unsaturated
glycerol is a lipid which is ________ (iupac)
trihydroxy propane
two main components of simple lipids
fatty acids
glycerol
in many lipids, fatty acids and glycerol are present together. here the fatty acid is ______ with glycerol
esterified
