Which two products of the light-dependent reactions are used up in the Calvin cycle? Rubisco adds a CO2 molecule to a sugar that contains _______ carbons. The reaction product immediately splits into two sugars that each contain _______ carbons. O2 can compete with CO2 for a place in the rubisco active site. As a consequenceO2 is incorporated into RuBP instead of CO2. Why might this be a disadvantage?

Which of the following plants conduct the light reactions and the Calvin cycle at the same time of day? Select all that apply. C3 C4 CAM

The three phases of the photosynthetic dark reactions are and

Place the following steps of the Light-Reactions of Photosynthesis in order.                                                                 Production of NADPH                                                                 Absorption of light                                                                 Electron transport chain & Production of ATP                                                                 Photosystem II                                                                 Photosystem I

What process is shown in the figure below? 3 Molecules CO2 RuBisCO Stage 1: carbon fixation 3 ADP 6 ATP ЗАТР 6 ADP Stage 3: regeneration of RUBP Stage 2: reduction 6 NADPH - 6 NADP*+ H* Sugar O Glycolysis O Light reactions of photosynthesis Oxidative phosphorylation Citric Acid Cycle O Dark reactions of photosynthesis

Photosynthesis and Respiration are opposing processes. One is required to produce food, the other to derive energy from food. Each of these processes involves a cycle to complete its goal. For Photosynthesis it is the Calvin Cycle; for Respiration it is the Krebs Cycle. Listed below are features of both cycles. Indicate which 5 of them are associated with the Calvin Cycle. Creates glucose ATP and CO2 are used ATP and CO2 are produced O A catabolic process An anabolic process. Oxidizes glucose O Occurs in mitochondria O Occurs in chloroplasts Occurs only in green organisms Occurs in all organisms

What are the two places where light energy is required in the light reaction of photosynthesis? Why must energy be supplied at precisely these points?

A culture of the single celled organism Chlamydomonas is actively carrying out photosynthesis in the presence of light and CO2. If you turned off the light, how would you expect the amounts of ribulose 1,5-bisphosphate and 3-phosphoglycerate to change over the next minute? How about if you left the light on and removed the CO2? Please answer these questions with specific references to the Calvin cycle.

Imagine that ferredoxin is no longer able to participate in cyclic electron flow but is otherwise unaffected. What is the logical result? Select all statements that are true below. O a. Water would be oxidized O b. The Calvin cycle would stop U c. NADPH would no longer be made O d. ATP would no longer be made U e. The light reactions would stop

NAME: Part I- Illuminating Photosynthesis #1: Fill in this concept map depicting the major steps in photosynthesis in the chloroplast: H,0 absorption of absorption of Photosystem I containing, containing. pumps transfers Word Bank: to produce Electron Transport Chain ATP Synthase Calvin Cycle Light synthesizes АТР NADPH Chlorophyll Protons CO2 Photosystem II Electrons O2 synthesizes G3P (Sugar Building Block) #2: Fill in the table: Does this step depend on any other step? How? What would happen if an herbicide disrupted this step? Experimental variable to Major Steps in Photosynthesis measure? Photosystem Il Photosystem I ATP Synthase Calvin Cycle Worksheets for “Killing Chloroplasts" by Angela K. Hartsock NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE