Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 1

True or False Indicate whether each of the following statements is true (T)or false (F).
(a)Sucrose is synthesized in the chloroplast stroma and exported from photosynthetic cells to provide energy and reduced carbon for nonphotosynthetic plant cells.
(b)Ninety percent of the solar energy collected by a photosystem complex is absorbed when photons strike a special pair of chlorophyll molecules at the reaction center of the complex.
(c)The energy requirement expressed as ATP consumed per molecule of carbon dioxide fixed is higher for a C 3 plant than for a C 4 plant.
(d)The ultimate electron donor for the photosynthetic generation of NADPH is always water.
(e)The enzyme rubisco is unusual in that, depending on conditions, it exhibits two different enzymatic activities.