The calvin cycle of photosynthesis begins when a. light becomes available. b. electrons leave a photosystem. c. the reduction of carbon dioxide occurs. d. carbon dioxide is attached to rubp.

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Does the sun release radiant energy?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water