hlorophyll a molecules heme molecules   Identify the Krebs cycle enzyme that consumes a six-carbon substrate molecule, producing a five-carbon product molecule along with NADH, and one molecule of CO2. succinyl CoA synthetase a-ketoglutarate dehydrogenase malate dehydrogenase isocitrate dehydrogenase citrate synthase

Match the following B vitamins with the roles of their coenzymes: riboflavin [ Choose ] niacin [ Choose ] pantothenic acid [ Choose ] vitamin B6 [ Choose ]

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 + NH3

Complete the description of the pentose phosphate pathway by filling the correct term to each blank. The pentose phosphate pathway is a two‑stage pathway that generates ______ , which is a reductant in many biosynthetic reactions and takes part in detoxifying reactive oxygen species, and __________ , which is a nucleotide (DNA and RNA) precursor. The substrate for the pentose phosphate pathway is ___________

Describe how a) Mean Arterial Pressure, b) Maximal Oxygen Consumption, and c) Blood Flow are determined using its formula. In addition, you should explain what those factors are including cardiac output, stroke volume, heart rate, resistance, a-vO2 difference, etc. Describe how many ATPs can be generated by complete cycles of beta oxidation of free fatty acid with 20 carbons. You should indicate how many cycles of beta oxidation and Krebs cycle, and total number of products as well

Glyceraldehyde 3-phosphate is an intermediate of glycolysis. This molecule was also generated during the metabolism of: urea amino acids O nitrogenous bases nucleotide sugars nitrogen gas

Strategies for regulating the central pathways in carbohydrate metabolism vary among different cells in one organism and among organisms.  Slight changes in the regulation of enzymes in central metabolism can effectively re-route metabolite traffic through these pathways, just like a small mutation in PFK-1 can convert a healthy cell into a cancerous one.   For instance, Gillaspera mold uses an alternative strategy for regulation the TCA and glycolysis.   Gillaspera contains a unique isocitrate dehydrogenase that has an allosteric site for citrate.  High citrate inhibits isocitrate dehydrogenase in this organism.   Gillaspera also lacks a citrate binding site on PFK-1, so this variant of the enzyme is not affected by citrate concentrations at all.   Gillaspera lacks the enzymes ethanol dehydrogenase and lactate dehydrogenase and no carbons are lost in its unique fermentation product.   Would high glucose in these organisms lead to production of carbon dioxide from glucose catabolism?…

One of the steps in psilocybin biosynthesis is the phosphorylation of 4-hydroxytryptamine By the enzyme Psik as shown below, that involves the hydrolysis of ATP. NH₂ OH HO Psik HO of A& ADP 4-hydroxytryptamine ATP norbaeocystin The standard free energy changes for each reaction is shown in the Table below. J reaction 4-hydroxytryptamine + P₁ → norbaeocystin ATP → ADP+ Pi (b) What is the equilibrium constant at 37 °C? AG 27.7 kJ/mol -32.2 kJ/mol (a) Write the net reaction. What is the standard free energy change for the net reaction? (c) In the cell, the concentration of ATP is 3.1 mM, the concentration of P; Is 5.90 mM, and the Concentration of ADP is 220 μM. What will AG Be if the concentration of norbaeocystin Is always kept at 1/100 of the concentration of 4-hydroxytryptamine?

Intermediates of a pathway are shown in the following scheme. Using curved arrows, show the mechanism of each step labeled with a blue letter. Draw out abbreviated structures of the coenzymes, so that you can effectively show all arrow pushing. You may abbreviate the coenzymes by putting R groups on the molecule, but do draw out the parts of the structure that are involved in the arrow pushing. Some of the transformations will require you to show multiple structures to show all of the arrow pushing (particularly some of the coenzyme-mediated steps). You do not need to show specific amino acid residues that perform the catalysis. You can abbreviate acidic amino acid residues “Enz–B–H” and basic residues “B­–Enz”.

The following image is a schematic of the metabolic processes occurring in a plant contained in a closed container.   A=Light Dependent reactions B=Glycolysis C=Light Independent Reactions D=Kreb's cycle E=electron transport chain   2a) Use the figure above to explain the conditions in which the oxygen concentration remains constant in the container. b) 2-carboxyarabinitol-1,5-bisphosphate (CABP) is an inhibitor of the enzyme rubisco. Which pathway would this affect most?