Question

11 Directions Use the scenario and Image below to answer questions 11 and 12. In an Insightful experiment performed in the 1960s, chloroplasts were first soaked in an acidic solution at pH 4, so that the stroma and thylakold space became acidified (see model right). They were then transferred to a basic solution (pH 8). This quickly Increased the pH of the stroma to 8 while the thylakold space temporarily remained at pH 4. A burst of ATP synthesis was observed, and the pH difference between the thylakold and stroma then disappeared. Based on this information, and your knowledge of biology, determine if the following statements are true or false. True or False: If the experiment was repeated today in a well lluminated lab, one would expect to observe a similar burst in АТР INGURATE CHLOROPLAST FOR SEVERAL HOURS CHANGE EXTERNAL AND ADO ADP ANOP 12 True or False if the experiment was repeated today in complete darkness, one would expect to observe a similar burst in ATP. The reaction for photosynthesis can be broken down into two reactions (below). Indicate which of the following describes reaction 1 and reaction 2. Select only ONE answer choice Photosynthesis: 600, + 6H,0-C.H.0.+60, Reaction 1: 600, -C,H,O Reaction 2:64,0-60 Reaction is and Reaction 2 is A Catabolic; Anabolic B. Endergonic: Anabolic C. Catabolic, spontaneous D. Endergonic: Catabolic 14 Which of the following is not an input of the light-dependent reactions? Select only ONE answer choice A Photons B. Water C. ADP D. Carbon Dioxide E They are all inputs. 15 Dr. Wright has a reputation for killing plants because he often forgets to water them. Which of the following is likely to result from low amounts of water that may lead to the death of the plant? Select only ONE answer choice. i s to become to A Oxygen will build up inside the plant and act as a toxin The light independent cycle will produce too much NADPH causing the pH of the th acidic. C. ATP production associated with photosynthesis will decrease D. Glycolysis will speed up in order to break down the excess glucose being produced E None of the above.

Answer 1

11) true, only when photochemically induced electron transfer is blocked.

12)True, experiment will give similar blast of ATP

13) d) endergonic and catabolic

14) e) all are inputs

15) c) ATP production associated with photosynthesis will decrease(to avoid water loss plant will close stomata which will led to low co2 input.)