I would think the public waters source due to bacteria contamination
Answer:
X is a competitive inhibitor.
Explanation:
X is a competitive inhibitor because it fights with the substrate for the active site of the enzyme. The active site is specific for a type of substrate, but as the inhibitor has a similar structure to the substrate, it can fit and not allow the substrate to interact with the enzyme and make its reaction. What we can do to do to keep having enzyme-substrate bindings is add more substrate to the solution, so there are more substrates than inhibitors, which leads to more products as a final result of the interaction between the enzyme and the substrate.
The right answer is: neutral mutation.
Neutral mutation is a nucleotide change in the DNA of the leading to the replacement of one amino acid by another amino acid possessing the same physicochemical properties.
example: AAA to AGA (Lysine to Arginine).
both these two amino acids are positively charged, so the charge of the protein will not change
