Which of the following takes place inside both mitochondria and chloroplasts? a. the flow of hydrogen ions is used to make atp. b. the calvin cycle builds sugar molecules. c. the krebs cycle breaks down carbon based molecules. d. light energy from the sun is captured and used to make atp.

How can you approximate the number of calories required to keep you in energy balance?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!