Carbon is fixed in the light independent or Calvin Cycle of photosynthesis and u
ID: 97908 • Letter: C
Question
Carbon is fixed in the light independent or Calvin Cycle of photosynthesis and used to synthesize what molecule? Select one: a. Glucose b. Atmospheric carbon dioxide c. Pyruvate d. ATP e. Oxygen During cellular respiration, chemiosmosis causes hydrogen ions (H+) to diffuse across the inner membrane of the mitochondrion. Which of the following does chemiosmosis DIRECTLY produce? Select one: a. NADH b. Glucose c. Oxygen gas d. ATP e. Water During what stage of cellular respiration is carbon dioxide released? Select one: a. Glycolysis b. Kreb Cycle c. Electron transport chain d. Chemiosmosis e. Light reaction How are the two reactions, photosynthesis and cellular respiration, linked? Select one: a. The products of photosynthesis are the reactants of respiration. b. The products of respiration are the reactants of photosynthesis. c. Animal cells can carry out both reactions. d. A and B e. The two reactions are not linked in any way. Many plants lose their leaves during winter and therefore their ability to photosynthesize yet metabolic pathways still function in winter and require an energy source. What form do plants store the glucose they produced during photosynthesis? Select one: a. Maltose b. Glycogen c. Starch d. NADH e. WaterExplanation / Answer
1) a.Glucose.Carbon fixed during the calvin cycle is used to synthesize glucose.carbon dioxide enters the interior of a leaf by stomata and diffuses into the stroma of the chloroplast which is the site of the Calvin cycle reactions, where sugar is synthesized. These reactions are also called the light-independent reactions because they are not directly driven by light.
2) d. ATP.Chemiosmosis is the movement of ions across a semipermeable membrane, down their electrochemical gradient. Generation of adenosine triphosphate (ATP) by the movement of hydrogen ions across a membrane during cellular respiration or photosynthesis.
3) b krebs cycle.The Krebs cycle breaks down a two-carbon molecule into two molecules of CO2.During cellular respiration CO2 is mostly produced during the Krebs cycle, where four compounds of CO2 are released and two compounds of CO2 are produced as Pyruvate acid is converted into a two carbon compound which is acetyl.
4) d. A and B.The product of photosynthesis are the reactants of respiration and the reactants of photosynthesis are the products of respiration.
5)c. starch is a polysaccharide found in plant.The plant needs energy all of the time. So, by producing glucose, the plant can store this molecule and then use it to produce energy during the night and over winter when there isn't enough sun to provide good photosynthesis.