In c4 plants, mesophyll cells perform both ps ii and ps i normally, while bundle sheath cells perform only ps i normally. ps ii activity is minimal. what is the advantage of having this difference for more efficient co2 fixation in c4 plants?

a. reduced ps ii activity reduces atp formation, thus photorespiration can’t happen

b. reduced ps ii activity reduces water breakdown, conserving more water for transpiration

c. reduced ps ii activity increases the rate at which co2 in fixed into malate in bundle sheath cells

d. reduced ps ii activity reduced oxygen release, thus competitive inhibition of rubisco by oxygen is minimal

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.