In CO2 assimilation of C4 plants, the acceptor molecule is oxaloacetate. Group of answer choices: True False
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- The pathway for cystiene synthesis in E.coli involves five precursor compounds, compound A-E. The requirements for each of the autotrophs are summarized in the table below. Use the data, define the biosynthetic pathway. Draw the pathway for cysteine synthesis. Fill in the blanks with A-E compounds as appropriate and then label the arrows with the auxotrophs C1-C8 that are unable to complete that step. There are may be more than one quxotroph that is defective at a particular step. that is - on C4 in DThe photosynthetic process used by the green sulfur bacteria, under anaerobic conditions, is best represented by which of the following balanced equations? cell bio 6CO2 + 12H2S C6H12O6 + 6S2 + 6H2O C6H12O6 + C6H12O6 C12H22O11 + H2O 6CO2 + 12H2O C6H12O6 + 6O2 + 6H2O C12H22O11 + H2O C6H12O6 + C6H12O6 C6H12O6 + 6O2 + 6H2O 6CO2 + 12H2OThe following complex natural product has been biogenetically produced via a pericyclic reaction(s) at the final stage. Can you propose the structure of the precursor? Но H. Me Me OH Me' rol Ме
- Nitrogenase complexes are irreversibly inactivated by oxygen. Explain how nitrogen-fixing bacteria solve this problem.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 + 12H2OOn the right the Hill plot com- (b) pares the O2 binding properties of Hb Ya- kima with those of HbA in 0.1 M NaCl buff- Hb-Yakima ered to pH 7 with 0.01 M bis-Tris. Focus first on the line for "stripped Hb". This is the term for hemoglobin isolated from erythro- cytes with removal of all organic phosphate molecules that might bind to the protein in RBCS. You can see that 2,3-bisphospho- glycerate (BPG; labeled DPG according to old terminology) does not alter the O2 bind- ing affinity of Hb Yakima in contrast to HbA (although it was shown that BPG did bind to the deoxyHb Yakima molecule). Also, Hb Yakima is associated with markedly decreased allostery in the absence and presence of BPG, in comparison to HbA. IHP = inositol hexaphosphate, an artificial allosteric modifying ligand that binds more tightly than BPG. stripped Hb Hb-A •DPG +DPG n= 1.0 n = 2.3 n=2,5 +THP +IHP 0.5 0.5 1 5 10 50 po, ( mm Hg ) %3D On the right is a diagram copied from the lecture handout "Hemoglobin and Allo-…
- Assume that two pigments, red and bluc, mix to give the normal purple color of petunia petals. Separate biochemical pathways synthesize the two pigments, as shown in pathways I and Il in the accompanying diagram. "White" refers to compounds that are not pigments (total lack of pigment results in a white petal). Red pigment forms from a yellow intermediate that is normally at a concentration loo kow to color petals. Bluc mixed with yellow makes green. Assume that no mutations are lethal. Pathway I.. White Blue Pathway I White, Yellow Red Pathway II White, White, A third pathway, whose compoundk do not contribute pelal pigmentation, normally docs not allfect the bluc and red pathways. However, if one of its intermediates (white3) should build up in concentration, it can be converted into the ycllow intermediate of the red pathway. In the diagram, the letiers A through E represent enzymes. The enzymes' correspoonding genes, all of which are unlinked, may be symbolized by the same letters.…Which statement on the biosynthesis of cannabinoids is NOT TRUE? Select one: O a. Geranyl pyrophosphate is formed as a precursor via the deoxyxylulose pathway in cannabis O b. Divarinic acid is the precursor for the production of propyl cannabinoid acids. O C. When prenyl-transferase enzyme uses olivetolic acid as substrate cannabigerivarinic acid (CBGVA) is formed. O d. THCA-synthase, CBDA-synthase, and CBC- synthase enzymes can use both CBGA and GBGVA as substrate.Choose the correct answer from the options in brackets. The [positive/negative] standard free‑energy change favors the oxidation of succinate by covalently‑bound FAD. This is consistent with K′eq [ >1 / =1 / <1 ]. Oxidation by NAD+ would require a large, [positive/negative] standard free‑energy change, with K′eq favoring the synthesis of succinate.
- What is the source of NH4+ in plant cells? Explain how NH4+ can be toxic to cells. How is this toxicity avoided?Which cytochrome P450-catalyzed reaction is shown below? R-CH2NH2 [R-CH=NH] Oxidation of aromatic amines Oxidative deamination Oxidative O-dealkylation Oxidative N-dealkylation para-hydroxylation R-CHO + NH3Archae are the source of many enzymes used for biocatalysis in diverse industries such as food and feed, pharmaceuticals, detergent, and beverage industries. These enzymes have unique structural and functional properties that enable use under extreme conditions. Use: https://biolres.biomedcentral.com/articles/10.1186/s40659-018-0186-3 for supplemental info What are three classes of extremophiles and their unique growth characteristics? Based on these characteristics, where are they typically found? The functional properties are linked to protein structural characteristics that imparts unique functional properties. For alkaliphiles and thermophiles, what structural elements (or characteristics) within the enzyme structure create these unique properties? See Table 2. Briefly discuss how the unique properties of these enzymes may be beneficial to the design of bioseparation processes. To recover intracellular enzymes, the Archae need to be lysed. Based on their structures,…