Biology Photosynthesis

Biology Photosynthesis What is the input for the light reactions? - CORRECT ANSWER-light energy and H2O Which of the following questions is most relevant to understanding the Calvin Cycle? - CORRECT ANSWER-How is ATP used in the formation of 3-carbon carbohydrates? Which of the following is a reactant in photosynthesis? - CORRECT ANSWER-Carbon Dioxide Which of the following describes the pathway of electrons in the light reactions? (O2 = oxygen, PS = photosystem) - CORRECT ANSWER-O2 -> PS II -> PS I -> NADPH Plants photosynthesize _____. - CORRECT ANSWER-Only in the light but respire in light and dark. Which of the following is NOT a part of photosynthesis? - CORRECT ANSWER-Krebs Cycle The major - light absorbing pigment in plant photosynthesis is a parotenoid. - CORRECT ANSWER-False What is the output for the light reactions? - CORRECT ANSWER-ATP and NADPH How many ATP's are required for the Calvin Cycle to make a G3P molecule? - CORRECT ANSWER-9 :Which of the following is an important difference between light - dependent and light - independent reactions of photosynthesis? - CORRECT ANSWER-The light - dependent reactions produce ATP and NADPH, the light - independent reactions use energy stored in ATP and NADPH. Photosynthesis is a process that takes place only in photoautotrophs. - CORRECT ANSWER-True What is the input for the Calvin Cycle? - CORRECT ANSWER-NADPH, CO2, H2O, G3P, ATP What is the input for the Calvin cycle? - CORRECT ANSWER-NADPH, CO2, ATP A scientist claims that Elysia chlorotica, a species of sea slug, is capable of photosynthesis. Which of the following observations provides the best evidence to support the claim? - CORRECT ANSWER-Elysia chlorotica grows when exposed to light in the absence of other food sources. To test the hypothesis that a particular plant synthesizes storage lipids by using glyceraldehyde 3-phosphate (G3P) from photosynthesis, a researcher plans to use radiolabeled precursors to track the molecules through the biosynthetic pathway. Which of the following radiolabeled precursors is most appropriate for the researcher to use? - CORRECT ANSWER-14C-labeled CO2, because atmospheric carbon is fixed to carbohydrates by photosynthesis. What is the output for the Calvin cycle? - CORRECT ANSWER-G3P If the input water is labeled with a radioactive isotope of oxygen, 18 O. then the oxygen gas released as the reaction proceeds is also labeled with 18 O. Which of the following is the most likely explanation? - CORRECT ANSWER-During the light reactions of photosynthesis, water is split, removing electrons and protons, and oxygen gas is released.