If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O EXCEPT a) ribulose bisphosphate (RuBP) b) glyceraldehyde 3-phosphate (G3P) c)O2 d)3-phosphoglycerate e)glucose
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If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O EXCEPT
a) ribulose bisphosphate (RuBP) |
b) glyceraldehyde 3-phosphate (G3P) |
c)O2 |
d)3-phosphoglycerate |
e)glucose |
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- The photosynthetic process, used by the chloroplasts of green plants and green algae, is best represented by which of the following balanced equations? C6H12O6 + 6O2 + 6H2O g 6CO2 + 12H2O C6H12O6 + C6H12O6 g C12H22O11 + H2O 6CO2 + 12H2O g C6H12O6 + 6O2 + 6H2O C12H22O11 + H2O g C6H12O6 + C6H12O6 6CO2 + 12H2S g C6H12O6 + 6S2 + 6H2OThe chemical reaction equation for the conversion of ethanol (C2H5OH) to acetic acid (CH3COOH) is: C2H5OH + O2 → CH3COOH + H2OIn a vinegar production industry, acetic acid is produced from ethanol during the growth of the bacterium Acetobacter aceti, whose cellular composition is CH1,8O0,5N0,2. The biomass yield from substrate is 0.14 g/g, while the product yield also from substrate is 0.92 g/g. Ammonia is used as a nitrogen source. Based on this information, answer: (a) What is the oxygen demand for acetic acid production in this crop?(b) What are the cooling requirements of a bioreactor containing 3000 L of ethanol (ρ = 789 kg/m³), to be completely converted into acetic acid?The photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? 6CO2 + 12H2O C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2S C6H12O6 + 6S2 + 6H2O C12H22O11 + H2O C6H12O6 + C6H12O6 C6H12O6 + C6H12O6 C12H22O11 + H2O C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2O
- Eukaryotic chloroplasts generate exactly how many product molecules, in their consumption of six substrate carbon dioxide molecules and twelve water molecules, during oxygenic photosynthesis? twelve C6H12O6 molecules, six H2O molecules, and three CO2 molecules are produced one C6H12O6 molecule, six H2O molecules, and six O2 molecules are produced six C6H12O6 molecules, three H2O molecules, and six CO2 molecules are produced twelve H2O molecules and six O2 molecules are produced six H2O molecules and twelve CO2 molecules are producedBlue-green algae (cyanobacteria) form heterocysts when deprived of ammonia and nitrate. In this form, the cyanobacteria lack nuclei and are attached to adjacent vegetative cells. Heterocysts have photosystem I activity but are entirely devoid of photosystem II activity. What is their role?place the following lists into the most appropriate pairs and explain how they are correct I chose the reduction of ferredoxin for the first one i chose O2 generation for the second i chose electron transport chain for the third I got these three wrong so i would like to know where i went wrong Antennae pigment molecules thylakoid membrane photosystem 1 Answer options: 1. absorption of light 2. reduction of ferredoxin 3. electron transport chain
- Green sulfur bacteria are able to generate which of the following inorganic product molecules during anoxygenic photosynthesis? elemental sulfur glucose C6H12O6 oxygen hydrogen sulfide Green sulfur bacteria are able to generate which of the following inorganic product molecules during anoxygenic photosynthesis? elemental sulfur glucose C6H12O6 oxygen hydrogen sulfideWhy does the boundary layer surrounding a photosynthetic organism make it more difficult to exchange CO2 and O2?Which of the following sequences of electron carriers could represent a workable bacterial electron transport chain? a. cytochromes, followed by an iron-sulfur protein, and quinones. b. quinones, cytochromes, iron-sulfur proteins, and a flavoprotein. c. a flavoprotein, followed by an iron-sulfur protein, quinones, and cytochromes. d. cytochromes, followed by quinones and a flavoprotein.
- Which of the following sequences of electron carriers could represent a workable bacterial electron transport chain? a. cytochromes, followed by an iron-sulfur protein, and quinones. b. quinones, cytochromes, iron-sulfur proteins, and a flavoprotein. c. a flavoprotein, followed by an iron-sulfur protein, quinones, and cytochromes. d. cytochromes, followed by quinones and a flavoprotein. The Tricarboxylic Acid Pathway (Kreb’s Cycle) supplies most of the precursors (carbon skeletons) of the amino acids used in protein synthesis. The rest are derived from intermediates of a. Glycolysis. b. the Pentose Phosphate Pathway. c. the Glyoxylate Pathway. d. Glycolysis and the Pentose Phosphate Pathway. Fermentation of pyruvate to ethanol supports glycolysis by a. reducing excess pyruvate. b. oxidizing excess glucose-6-phosphate. c. oxidizing reduced NAD. d. oxidizing excess ethanol.What is the chemical species that is transferred through the light reactions? (Box A) What energy-rich compound is produced by the actions of the cytochrome complex? (Box B) What is the compound (Box C) used to donate electrons to the photosystems, and which gives rise to 2H+ and O2. What energy is used to energise the light reactions? (Box D) What is the product of the reaction that is occurring at NADP+ reductase? (Box E) Provide names for structures i and iiIf algae are exposed to 14CO2 for a brief period while illuminated, the labeled carbon is initially found almost entirely in the carboxyl group of 3-phosphoglycerate. However, if illumination is continued after the label pulse, other carbon atoms become labeled. Explain.