PLEASE HELP 99 points and brainly answer!! im also being timed!!!! PLEASE HURRY ONLY 33 minutes!!!!

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)
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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 helps plants retain water.
(see second pic)

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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.

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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)