Can cells bypass the g2 checkpoint and move to the synthesis

yes

Explanation:

As long as the phase is fully completed then it will pass the G2 checkpoint and move into synthesis.

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.