What happens during the regeneration stage of the Calvin Cycle? Energy from ATP and electrons from NADPH are used to reduc 3-phosphoglycerate to form G3P molecules (which can be used to form other organic molecules such as glucose) The remaining G3P molecules that have not exited the cycle are used to re-form RuBP through a series of chemical reactions, so that the Calvin cycle can continue Oxygen is produced through this process The enzyme Rubisco attaches to CO2 to RuBP, causing the formation of molecules of 3-phosphoglycerate

What happens during the regeneration stage of the Calvin Cycle? Energy from ATP and electrons from NADPH are used to reduc 3-phosphoglycerate to form G3P molecules (which can be used to form other organic molecules such as glucose) The remaining G3P molecules that have not exited the cycle are used to re-form RuBP through a series of chemical reactions, so that the Calvin cycle can continue Oxygen is produced through this process The enzyme Rubisco attaches to CO2 to RuBP, causing the formation of molecules of 3-phosphoglycerate

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter8: Photosynthesis

Section: Chapter Questions

Problem 2TYK

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What is the molecule that leaves the Calvin cycle to be converted into glucose? a. ADP b. G3P c. RuBP d. 3-PGA
The Overall Free Energy Change for Photosynthetic NADP+ Reduction What is the overall free energy change (G) for noncyclic photosynthetic electron transport? 4 (700-nm photons) + 4 (680-nm photons) + 2 H2O + 2 NADP+O2 + 2 NADPH + 2H+
Match each term with its most suitable description. ____ PGAL formation a. absorbs light ____CO2 fixation b. converts light to chemical energy ____ autotroph c. self-feeder ____ ATP forms NADPH does not d. electrons cycle back to photosystem ____ photorespiration e. problem in C3 plants ____ photosynthesis f. Calvin-Benson cycle product ____ pigment g. water molecules split ____ photolysis in photosynthesis h. rubisco function
Which part of the Calvin cycle would be affected if a cell could not produce the enzyme RuBIsCO?
In the carbon reduction phase of the Calvin cycle, electrons from NADPH are donated to a metabolic intermediate to form G3P molecules. Which statement is NOT true regarding G3P? A. G3P molecules are involved in the regeneration of RuBP. B. G3P molecules affect the activity of the enzyme rubisco. C. G3P molecules have more potential energy than PGA molecules. D. G3P molecules are used to synthesize glucose and other sugars.
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?
he Calvin Cycle represents the major pathway by which photosynthetic organisms gain carbon. Which of the following statements about the Calvin Cycle is correct? 1. NADPH is consumed during the reduction phase of the cycle. 2. Each turn of the cycle generates one extra molecule of glyceraldehyde 3-Phosphate (G3P). 3. The cycle would stop if ribulse-1,5-bisphosphate (RuBP) does not get regenerated. 4. The Calvin Cycle is often referred to as the “Dark Reactions” because it operates continually in the dark. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correct
Which of the following statements about the Calvin-Benson cycle is TRUE? Select one: a. Blocking light causes 3PG to accumulate. b. All the statements are false. c. Rubisco catalyzes the formation of RuBP. d. ATP and NADPH + H+ are required to regenerate RuBP. e. More molecules of NADPH than ATP are required per cycle.
The end product(s) of the light independent reactions (Calvin cycle) of photosynthesis is glyceraldehyde-3-phosphate. Where (if any) can this product enter into catabolic metabolism to make ATP for the cell? Select one: a. the Kreb’s cycle since the end product is pyruvate b. the energy investment stage (step 1) of glycolysis c. the energy payoff stage of glycolysis d. oxidative phosphorylation since the end product(s) are ATP and NADH
The primary role of the Calvin cycle in photosynthesis is to: - split H2O and release oxygen - establish a proton gradient across the thylakoid membrane - use the energy in ATP and NADPH to fix carbon and build sugars - produce ATP and NADPH 2. The enzyme used to catalyze the initial fixation of CO2 in C3 photosynthesis is: Rubisco NADP+ reductase ATP synthase PEP carboxylase 3. The primary role of the light reactions in photosynthesis is to: - bring CO2 into the chloroplast use the energy in ATP and NADPH to fix carbon and build sugars establish a proton gradient across the thylakoid membrane produce ATP and NADPH *I do not need an explanation so please don't provide, I just need an answer choice picked for each*
What are the stages of the Calvin-Benson cycle? Select all that apply. The resulting unstable six-carbon molecule splits into two three-carbon molecules of PGA. ATP and NADPH are used to convert PGA molecules to PGAL. Most of the PGAL is used to regenerate RuBP, but some is exported to the cytoplasm to produce carbohydrates. Rubisco attaches CO2 to a five-carbon organic compound called RuBP. Rubisco is used to convert PGA molecules to PGAL.
The enzyme that fixes carbon dioxide to RuBP at the beginning of the Calvin cycle is the most abundant protein on earth. It is called: A) glyceraldehyde 3-phosphate B) carbon fixase C) ATP synthase D) phosphatase E) rubisco