Energy 4.2

How does the Calvin cycle depend on the Light reactions?

The ATP provides the energy, and the NADPH supplies the electrons for the Calvin cycle, which converts carbon dioxide to sugar. The ADP and NADP+ that result from the Calvin cycle shuttle back to the light reactions, which regenerate ATP and NADPH.

Why are C4 and CAM plants typically found in hot climates?

because in hot climates, plants undergo photorespiration alot more, so they have adapted to C4 and CAM photosynthesis to fix that problem.

Why do plants need to control the loss of water? How is this done?

because water is the essential ingredient in photolysis, which is where water is split using light energy. they control water loss with guard cells which control if the stromata (pores in the leaf) is open or closed

what molecules are reduced in photosynthesis?

carbon

What happens during the Calvin cycle?

light energy is initially converted to chemical energy in the form of two compounds: NADPH, a source of energized electrons ( "reducing power"); and ATP, the versatile energy currency

Explain the phenomenon of photorespiration, why it is thought to occur (evolutionarily speaking), and why plants have evolved to minimize its occurrence.

photorespiration refers to a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, causing some of the energy produced by photosynthesis to be wasted. C4 and CAM photosynthesis is used to alleviate the problem of photorespiration

what molecules are oxidized in photosynthesis?

water molecules