99 points and im also being hurry only 33
a group of students conducts research on enzyme activity and collects the data shown in the graphs.
which statement is supported by the evidence in the graphs?
a
the enzyme functions well at a temperature of 35°c and would be active at any ph value.
b
the enzyme's activity is greatest at ph 7 and would not be affected by a change in temperature.
c
the enzyme is very active at approximately 42°c and within a ph range of 2 to 6.
d
the enzyme works best in a ph range of 6 to 8 and at a temperature of approximately 37° c.
(see first pic)

the picture is a major macromolecule.
what best describes the function of this macromolecule?
a
it is broken down to provide usable chemical energy.
b
it stores and transmits genetic information.
c
it transports oxygen in the blood.
d
it plants retain water.
(see second pic)

proteins are involved with many different functions inside of the cell. a student argues that because of this, proteins need to have a wide variety of structures.
which of the following statements about proteins best supports the student’s argument?
a
proteins are made up of individual units that form polypeptide chains.
b
proteins can be made up of any combination of 20 different amino acids.
c
proteins are composed of both essential and nonessential amino acids.
d
proteins are synthesized from rna sequences containing four bases.

the graph illustrates the activity level of three common digestive enzymes, across a range of ph values. which enzyme is likely to
be the most active in the acidic environment of the stomach?
a
amylase
b
trypsin
c
pepsin
d
pepsin and trypsin
(see third pic)