11. (circle one) oxygen is a product or reactant of respiration? (in other words, is it needed or released? ) energy-producing process reaction location in cell photosynthesis 12. 6co2++ chloroplast cellular respiration 13. reflection question : explain the relationship between photosynthesis and cellular respiration. be sure to include the main purpose of both and where they occur inside the cell. __photosynthesis use energy from the sun to make glucose and oxygen in the day respiration it is the process that is not timely and is done in the day and night with not stop moment humans and plants humans need plants. all animals do. humanity's relationship with plants has actually made it possible for us to have a civilization. before we had cities, humans went around in little packs and were hunter-gatherers. we ate rats, birds, berries, and whatever food we could find. it wasn't very efficient. one day someone had the bright idea to plant the plants we like to eat. when humans did that, they were able to stay in one place full time. then came the cities and a huge system of agriculture to support millions of people. big time farming as time has passed, we have taken farming to new levels. we have manipulated species to create big apples and large ears of corn. the plants would never have done it in the wild. it took man to change the plants. we are also moving toward the genetic alteration of plants. we're trying to make plants that are resistant to disease and bugs. these stronger plants will allow our crops to give us more food from the same amount of space. 1. genetic alteration probably refers to altering what…. (found in the nucleus)