A)They have an intermembrane space and a matrix. B)They have three membrane-enclosed compartments. C)Unlike mitochondria, they lack a stroma. D)They carry out both photosynthesis and respiration.
A)Water provides a phosphate group to ATP. B)Water captures light energy and transfers it to the electron transport chain. C)Water provides replacement electrons to the reaction center chlorophyll. D)Water combines with carbon dioxide (CO2) to make glucose.
Stomata admit CO₂ but also facilitate the loss of water; plants must regulate their stomata carefully or risk dehydration. A reasonable hypothesis associated with the global increase in atmospheric CO₂ is that plants will
A)evolve lower stomatal densities and reduce the potential for desiccation. B)grow larger and more rapidly than they presently do. C)keep their stomata closed most of the time to minimize carbon dioxide poisoning. D)increase stomatal densities to take advantage of the abundance of CO2.