The Living World 6th Edition by George Johnson, Jonathan Losos,William Ober,Claire Garrison

تمرين 9

Plants use two photosystems to capture energy used to produce ATP and NADPH. The electrons used in these photosystems
A) recycle through the system constantly, with energy added from the photons.
B) recycle through the system several times, using energy added from photons, and then are lost due to entropy.
C) only go through the system once; they are obtained by splitting a water molecule.
D) only go through the system once; they are obtained from the photon.