Which of the following sequences is an example of a point mutation of the dna sequence -a-a-g-t-g-c-? a. -a-a-a-t-g-c- b. -a-a-g-u-g-c- c. -g-t-a-g-a-a-c- d. -a-a-g-g-t-c-

i think c. is the best answer , we just got off that topic like a week ago .

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

the answer will be a) proteins i believe