Question

68) Thylakoids are arranged in stacks called A) stomata. B) cristae. vacuoles. D) grana. 69) CO2 enters and O2 escapes from a leaf via A) thylakoids. B) stroma. grana. D) stomata. 70) In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the A) thylakoid. B) stroma. stomata. D) matrix. 71) In most green plants, chloroplasts are A) concentrated in a zone of leaf tissue called the mesophyll B) concentrated in a portion of the leaf called the stroma. evenly distributed throughout the entire plant. D) evenly distributed throughout the leaf tissue. 72) What is the likely origin of chloroplasts? A) prokaryotes with photosynthetic mitochondria B) mitochondria that had a mutation for photosynthesis photosynthetic prokaryotes that lived inside eukaryotic cells D) eukaryotes that engulfed photosynthetic fungi 73) Which of the following is an example of a photoautotroph? A) grizzly bears in Alaska B) mushrooms growing on the side of a dead tree grass on the front lawn D) bacteria in our mouths 74) Photoautotrophs A) eat other organisms that use light energy to make food molecules. B) include only the green plants. make sugar by using organic raw materials. D) produce organic molecules from inorganic molecules. 75) Where is chlorophyll found in a plant cell? A) stroma cytoplasm B) cristae D) thylakoid membranes 76) The oxygen released into the air as a product of photosynthesis comes from A) water. B) carbon dioxide. chlorophyll. D) glucose 77) Which of the following molecules is a reactant of photosynthesis? A) O2 B) CO2 chlorophyll D) glucose 11 78) If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive Hand O show up? A) H and O both in glucose B) H in glucose and water; O in O2 Hin glucose; O in water D) H in water, Oin glucose