SAPLINGPLUS F/BIOCHEM+ICLICKER REEF-CODE
9th Edition
ISBN: 9781319398583
Author: BERG
Publisher: MAC HIGHER
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Question
Chapter 25, Problem 21P
Interpretation Introduction
Interpretation:
Reciprocal substrate synthesis in the synthesis of ATP and GTP needs should be determined.
Concept introduction:
Purines and pyrimidines are the
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Required partner. Aminotransferases require which of the following
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a. NAD+/NADP+NAD+/NADP+
b. Pyridoxal phosphate
c. Thiamine pyrophosphate
d. Biopterin
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b. Coenzyme Q
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Fo-F1 ATPase. The energy for ATP synthesis from ADP and Pi is provided by the downhill transport of protons through the rotary FoF1 ATP synthase . The enzyme has 3 alpha-beta and 12 ‘c’ subunits. The mitochondrion maintains change in membrane potential=180 mV (negative inside), pHin = 8, pHout=7, [Pi] = 3 mM and ADP is present as well.
. What [ATP]/[ADP] ratio will be established at steady-state under these conditions?
What would be the [ATP]/[ADP] ratio if the enzyme had only 9 ‘c’ subunits? full revolution of the crank (gamma subunit) produces 3 ATP.
Chapter 25 Solutions
SAPLINGPLUS F/BIOCHEM+ICLICKER REEF-CODE
Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10P
Ch. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - Prob. 16PCh. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Prob. 20PCh. 25 - Prob. 21PCh. 25 - Prob. 22PCh. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - Prob. 28PCh. 25 - Prob. 29PCh. 25 - Prob. 30PCh. 25 - Prob. 31PCh. 25 - Prob. 32PCh. 25 - Prob. 33PCh. 25 - Prob. 34PCh. 25 - Prob. 35PCh. 25 - Prob. 36PCh. 25 - Prob. 37PCh. 25 - Prob. 38PCh. 25 - Prob. 39PCh. 25 - Prob. 40PCh. 25 - Prob. 41PCh. 25 - Prob. 42PCh. 25 - Prob. 43PCh. 25 - Prob. 44PCh. 25 - Prob. 45PCh. 25 - Prob. 46PCh. 25 - Prob. 47PCh. 25 - Prob. 48PCh. 25 - Prob. 49PCh. 25 - Prob. 50PCh. 25 - Prob. 51P
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- Fo-F1 ATPase. The energy for ATP synthesis from ADP and Pi is provided by the downhill transport of protons through the rotary FoF1 ATP synthase (lecture 22). The enzyme has 3 a-b and 12 ‘c’ subunits. The mitochondrion maintains Df=180 mV (negative inside), pHin = 8, pHout=7, [Pi] = 3 mM and ADP is present as well. How much energy is available (from the proton electrochemical gradient) for ATP synthesis under these conditions (in kJ/mol)? What [ATP]/[ADP] ratio will be established at steady-state under these conditions? What would be the [ATP]/[ADP] ratio if the enzyme had only 9 ‘c’ subunits? Remember that full revolution of the crank (gamma subunit) produces 3 ATP.arrow_forwardSelect all that apply. What is true about the conformational aspects of coupling? O The proton gradient is involved in the release of bound ATP from the synthase as a result of conformational change. O The conformational states interconvert as a result of proton flux through the synthase. There are two sites for substrate on the synthase and two possible conformational states: open (0) and tight-binding (T). Dinitrophenol binds to and inhibits ATP synthase conformational changes, thus inhibiting ATP synthesis. The Fo portion of ATP synthase acts as a rotary motor.arrow_forwardLife requires energy. Describe the basic principles of bioenergetics in an animal cell. How is the flow and transformation of energy different in a photosynthesizing cell? Include the role of ATP and enzymes in your discussion.arrow_forward
- Draw TCA Cycle. Please make sure to state all the enzymes and co-factors for each step of the pathway.arrow_forwardAtp bookkeeping. Explain where the number of 38 and 32 atp per glucose molecules comes fromarrow_forwardChemiosmosis. ATP synthesis in chloroplasts is usually light dependent; it does not happen in the dark. When researchers shifted isolated chloroplasts from a low pH solution to a more alkaline (higher pH) solution, ATP synthesis occurred even in the absence of light! This was an experiment used to support the chemiosmosis mechanism of ATP formation in chloroplasts. Why? What would happen if the isolated chloroplasts were shifted to a lower pH solution? What would be the results if the above experiments were performed in the presence of light? If these experiments were performed in mitochondria instead of chloroplasts, what results would we expect?arrow_forward
- Life requires energy. In a short essay (100–150 words), describe the basic principles of bioenergetics in an animal cell. How is the flow and transformation of energy different in a photosynthesizing cell? Include the role of ATP and enzymes in your discussion.arrow_forwardIn full details. Define 'activation energy' of an enzyme catalysed single substrate reaction and mention the effects of an enzyme on this energy.arrow_forwardHigh potential. What is the equilibrium ratio of phosphoenolpyruvate to pyruvate under standard conditions when [ATP ]/[ ADP ]=10? [ATP]/[ADP] = 10?arrow_forward
- entation . During the process of glycolysis, some hydrogen atoms are removed from glucose in the formation of pyruvate. This is an example of which (4.1) KU process (a) hydrolysis (b) dehydration (c) dehydration synthesis (condensation) (d) reduction If y think the statarrow_forwardATP yield. Each of the following molecules is processed by glycolysis to lactate. How much ATP is generated from each molecule?arrow_forwardLess energetic electrons. Why are electrons carried by FADH 2 not as energy rich as those carried by NADH? What is the consequence of this difference?arrow_forward
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