Suppose that an aspartic acid (aspartate) residue in the active site of an enzyme was mutated to alanine. as expected, the alanine mutant was inactive, suggesting that the aspartic acid residue was critical to the catalytic mechanism. which mutation is most likely to restore wild‑type level of activity to the alanine mutant?
a. a toy
b. a to e
c. a tol
d. a to m
e. a to k

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

i need mutiple choices

the product of the pressure and volume is also constant

the answer is 1 i believe