An enzyme contains an active site aspartic acid with a pKa=5.0, which acts as a general acid catalyst. Choose the curve of enzyme activity (reaction rate) versus pH for the enzyme (assume the protein is stably folded between pH 2−12 and that the active site Asp is the only ionizable residue involved in catalysis).

where is the following

explanation:

gas

explanation:

smoke is the matter of a gas

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but