e oxygen species (ROS) generated? 1. Why are reactiv A. Molecular oxygen recombi
ID: 268774 • Letter: E
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e oxygen species (ROS) generated? 1. Why are reactiv A. Molecular oxygen recombines with hydrogen to produce dihydrogen oxide B. Stray electrons bind to oxygen creating a free radical oxygen species C. There are high ADP levels D. There is a high NAD+/NADH ratio E. Transfer of a H+ across the inner mitochondrial membrane is uncoupled from ATP synthase 2. What is the net product from CO2 fixation in the Calvin cycle? A. glucose B. 3-phosphoglycerate C. succinate dehydrogenase D. glucose 6-phosphate dehydrogenase E. glyceraldehyde 3-phosphate 3. A common theme in biochemistry is that all of carbohydrate metabolism is coordinately regulated. What regulator of glycolysis and gluconeogenesis is also a regulator of sucrose synthesis in plants? A. AMP B. fructose 2,6-bisphosphate C. NAD+ D. citrate E. acetyl-CoA 4. What are the products of photophosphorylation? A. heat and ATP B. NADH and ATP C. GTP and FADH2 D. NADPH and ATP E. ATP and GTP 5. Rubisco: A. stands for ribulose-1,5-bisphosphate carboxylase/oxygenase B. is the most common enzyme in the biosphere C. catalyzes the covalent attachment of CO2 to ribulose-1,5-bisphosphate and cleavage to form two molecules of 3 phosphoglycerate D. is activated by rubisco activase that overcomes product feedback inhibition. E. All of the answers are correct.Explanation / Answer
1.b) stray electron binds to oxygen creating a free radicals oxygen species.Free radicals are generated by reactive oxygen species and they are highly reactive.Leading to many diseases like cancer if free radicals are not neutralized by antioxuanti.
2) E glyceraldehyde 3 phosphate is the net result of CO2 fixation.They are generated in the light dependent reaction.
3) fructose- 2,6 bisphosphate are regulator of glycolysis and gluconeogenesis.Strong internal regulator and plant use these cytoplasmic alternatives.
4) NADPH and ATP are the net result of photophosphorylation.
Oxygen is produced as a waste products of photosynthesis.
5)all the answers are correct it is a carboxylase and oxygenase.This enzyme is involved in the first major step of carbon fixation.Rubisco is involved in the first step of Calvin acid cycle.
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