Unit 3 AP Bio Test Exam Questions With Verified Answers.

Unit 3 AP Bio Test Exam Questions With Verified Answers. What does the chemiosmotic process in chloroplasts involve? - answerA) establishment of a proton gradient In glycolysis, for each molecule of glucose oxidized to pyruvate - answerB) 2 molecules of ATP are used and 4 molecules of ATP are produced. In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP? - answerD) energy released from movement of protons through ATP synthase Which statement describes the functioning of photosystem II? - answerD) The electron vacancies in P680 are filled by electrons derived from water. The primary role of oxygen in cellular respiration is to - answerB) act as an acceptor for electrons and hydrogen, forming water. During aerobic respiration, which of the following directly donates electrons to the electron transport chain at the lowest energy level? - answerE) FADH2 Which of the following is likely to lead to an increase in the concentration of ATP in a cell? - answerB) an increase in a cell's catabolic activity What wavelength of light in the figure is most effective in driving photosynthesis? - answerA) 420 mm Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different? - answerD) Other pigments absorb light in addition to chlorophyll a. The oxygen consumed during cellular respiration is involved directly in which process or event? - answerB) accepting electrons at the end of the electron transport chain In a plant cell, where are the ATP synthase complexes located? - answerD) A and C....thylakoid membrane & plasma membrane Where does the Calvin cycle take place? - answerA) stroma of the chloroplast