Which type of mutation adds one or more base pairs?

Insertions

Explanation:

Because they are mutations that use extra base pairs and insert them into a new place for the DNA, when a section of DNA is lost, A insertion fills it in.

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.