Dr. garvey measured the ph inside a bacteria cell and found the ph was a level 4. she then injected enough acid into the cell to change the ph to a level 2. she re-measured the ph after several moments and found the bacteria cell remained at ph of 4. what is the most likely explanation?

a. the bacteria cell contained enzymes which changed the ph
b. she made a mistake and injected the wrong acid
c. the bacteria cell contained sugars which increased the ph
d. the bacteria cell contained buffers which regulated the ph

The answer should be A.

To sustain life, almost all metabolic processes in the cell need enzyme catalysis, which means enzymes are affecting the cell metabolism. And because of that reason, it leads to the study of enzymes called Enzymology and enzymes become a most promising catalyst in industrial, research, and medical applications.

Could learn more here about enzymes: https://www.creative-enzymes.com/cate/Enzymes_2.html.

the form of energy changes and the total energy increases0l

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.