In crassulacean acid metabolism (cam) plants 84) a) malate is stored in large vacuoles. b) the amount of carbon assimilated for each water molecule transpired is only 25 percent of that in c3 plants. c) stomata open during the day. d) carboxylation and decarboxylation reactions occur in the same location at the same time. e) co 2 is transported directly into mesophyll cells.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.