. Explain the factor(s) which contribute to phosphoenolpyruvate’s observed “high energy” phosphoryl group donor potential.
Stimulation by phosphoenolpyruvate (PEP) of Ca2+ efflux from preloaded rat liver mitochondria is associated with an enhanced respiratory rate and is dependent on the Pi concentration of the extramitochondrial medium. PEP-induced Ca2+ efflux is inhibited by concentrations of NEM, mersalyl, and DTNB that also inhibit the respiration-linked transport of Pi as well as by bongkrekic acid at concentrations that also inhibits the adenine nucleotide translocase. Since PEP can gain access to the mitochondrial matrix by means of a carrier mediated exchange with intramitochondrial adenine nucleotides, we conclude that the ability of PEP to induce Ca2+ efflux could be associated with adenine nucleotide efflux as well as Pi influx and that the stability of the accumulated Ca2+ is likely to be controlled by the intramitochondrial ATP/Pi ratio.
. Explain the factor(s) which contribute to phosphoenolpyruvate’s observed “high energy” phosphoryl group donor potential.
______________: catalyzes the transfer of phosphoryl groups from high-energy, phosphate-donating molecules to specific substrates. Group of answer choices kinase phosphatase mutase ATP
Identify factors that account for the high phosphoryl-transfer potential of the nucleoside triphosphates, NTPs. stabilization by hydration low standard free energy of hydrolysis resonance stabilization ilization decrease in entropy increase in entropy
Which of the following molecules has the highest phosphoryl-transfer potential? Group of answer choices Glucose-6-phosphate 1,3-bisphosphoglycerate phosphoenolpyruvate creatine phosphate ATP
Which of the following compounds, 2-phosphopropanoic acid, or 2-phospho-2-propenoic acid, would have the higher phosphoryl group transfer potential? Explain your answer.
Explain the definition of ionization energy, the observed group and period trends for this property, and (using effective nuclear charge) why the observed trends happen the way they happen. For each of the following molecules, draw a Lewis structure (all resonance structures if necessary), indicate the molecular geometry, and indicate the bond angles based on VSEPR theory: Identify the hybrid orbitals used for each of the following geometries, according to Valance Bond Theory: (a) tetrahedral _____ (b) bent (as in...
Calculate the structure factor for CsCl. Assume that fcs 3fci Explain which reflections can be observed. Which of these reflections can be expected to be strong and which can be expected to be weak because of the influence of the structure factor? Cl.
. For each phosphate group below indicate if that phosphate is considered a high energy phosphate group or a low energy phosphate group. For any high energy phosphate groups clearly circle and name the feature on this phosphate group which makes this phosphate group a high energy phosphate group. (2 points each) Sa. 5b. 5c O-P-O-P-O . For each phosphate group below indicate if that phosphate is considered a high energy phosphate group or a low energy phosphate group. For...
Please solve and explain! Review Part A What is the electric potential energy of the group of charges in the figure? (Figure 1) Express your answer with the appropriate units. Value Units SubmitR Request Answer Provide Feedback Figure 1 of 1 1.0 nC 3.0 cm 3.0 cm 3.0 cm 2.0 nC 2.0 nC
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 2.10m and cross the bar with a speed of 0.50 m/s?
Which factor(s) will influence the rate of a reaction? A. The kinetic energy of the molecules. B. The number of molecules. C. The physical state of the reactants. D. All three of the answers shown.