EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Question
Chapter 6, Problem 2COQ
Summary Introduction
To determine: The advantage of using ATP (Adenosine triphosphate) as a common energy source over the different bunch of food molecules.
Introduction: ATP is the energy currency of the cell which provides the required amount of energy to the cell for various purposes. The cell uses ATP as a common energy source instead of using a different bunch of food molecules.
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Students have asked these similar questions
In hepatocytes, the enzyme glucokinase catalyzes the ATP-coupled phosphorylation of glucose. Glucokinase binds both ATP
and glucose, forming a glucose-ATP-enzyme complex. The enzyme then transfers the phosphoryl group directly from ATP
to glucose.
Select the advantages of phosphoryl group transfer compared to hydrolysis and subsequent phosphorylation?
ATP hydrolysis is thermodynamically unfavorable compared to group transfer.
Glucokinase increases the transition state energy, favoring glucose phosphorylation.
The process takes advantage of the high phosphoryl group transfer potential of ATP.
Reaction intermediates do not need to be present in excess.
Incorrect
What is the enzymatic activity of sodium-potassium ATPase (pump)?
binds to and hydrolyzes ATP; binds to 3 Na+ in cytoplasm and releases outside cell; binds to 2 K+ outside cell and releases into cytoplasm
binds to and hydrolyzes ATP; binds to 2 Na+ in cytoplasm and releases outside cell; binds to 3 K+ outside cell and releases into cytoplasm
binds to and hydrolyzes GTP; binds to 3 Na+ in cytoplasm and releases into nucleus; binds to 2 K+ inside cell and releases into lysosome
binds to and hydrolyzes 3 ATP; binds to 1 Na+ in cytoplasm and releases outside cell; binds to 1 K+ outside cell and releases into cytoplasm
Enzyme 3 (diagram) is involved in negative feedback inhibition. It binds ATP at an inhibitory allosteric enzyme site on phosphofructokinase.
What reagents does phosphofructokinase take into its active site.
What are the products of the reaction that phosphofructokinase mediates.
What do you think the ΔG (free energy) of this reaction is positive or negative, endothermic vs exothermic?
Explain your answer above
ATP is the end-product of ETC (electron transport chain), and at high concentrations of ATP, phosphofructokinase is inhibited allosterically. Please note that ATP is required in the active site. How does this mechanism act as a regulator for the entire ATP production pathway in mitochondria?
Chapter 6 Solutions
EBK BIOLOGY
Ch. 6.1 - Which do you think has more entropy, a NaCl...Ch. 6.1 - Prob. 2CCCh. 6.2 - Prob. 1CCCh. 6.2 - Prob. 2CCCh. 6.2 - Prob. 3CCCh. 6.2 - Prob. 1BCCh. 6.2 - Prob. 1EQCh. 6.2 - Prob. 2EQCh. 6.2 - Prob. 3EQCh. 6.3 - Prob. 1CC
Ch. 6.3 - Prob. 1BCCh. 6.4 - What are advantages of protein degradation?Ch. 6 - Reactions that release free energy are a....Ch. 6 - Enzymes speed up reactions by a. providing...Ch. 6 - Prob. 3TYCh. 6 - Researchers analyzed a cell extracta mixture of...Ch. 6 - In biological systems, ATP functions by a....Ch. 6 - In a chemical reaction, NADH is converted to NAD+...Ch. 6 - Prob. 7TYCh. 6 - Prob. 8TYCh. 6 - Prob. 9TYCh. 6 - Autophagy provides a way for cells to a. degrade...Ch. 6 - Prob. 1CQCh. 6 - Prob. 2CQCh. 6 - Prob. 3CQCh. 6 - Prob. 1COQCh. 6 - Prob. 2COQ
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- Which of the following among A- D is incorrect regarding the proton motive force and ATP synthase (ATPase)? A) O The F1 subunit of the ATPase binds ADP and phosphate, forms ATP, and then releases ATP B) O Increasıng the difference in pH across the membrane of a bacterial cell would likely increase its proton motive force. O O The ATPase is a molecular motor that moves as protons flow through it. D) O Increasing the negative charge inside a bacterial cell would likely increase the proton motive force. E) O All of A- D is correct.arrow_forwardSometimes, ATP is referred to as the “energy-storage molecule.” The cell does not actually store energy as a lot of extra ATP but as glycogen or triacylglycerides. Why do you suppose this is the case?arrow_forwardWatch this video and answer the question below https://youtu.be/AtlCxYDxY1I BCR-ABL is a kinase. A kinase is a type of enzyme that catalyzes the transfer of phosphate from one molecule to another. What are the substrates for the reaction that BCR-ABL catalyzes? Select all that are true.a- Substrate protein b- BCR-ABL c-ATP d- None of the listed molecules herearrow_forward
- Therefore the role of the enzyme is to circle one: (regulate / speed up /inhibit) a reaction by circle one: (INCREASING / DECREASING) the Does the forward reaction require an input of cellular energy? circde one: (YES / NO) If yes, where does that energy come from? Does the forward reaction release energy? circle one: (YES / NO) If yes, what is that energy used to make? Is the activation energy provided by ATP circle one: (YES / NO). It is provided by physical strain on the bond from how the holds the c. The reverse reaction would be written as: Please select the correct letters from graph (a-e) to match the description for the reverse Activation energy without an enzyme. Activation energy with an enzyme. AG (change in free energy). reaction. Does the reverse reaction require an input of cellular energy (ATP) ? circle one: (YES / NO) If yes, where does that energy come from? Does the reverse reaction release energy? circle one: (YES / NO) If yes, what is that energy used to make?arrow_forwardWhat's the difference between a calorie, an ATP molecule, and a GTP molecule? How does GTP become ATP? Also, explain how ATP is made. A clear explanation and graphic are required.arrow_forwardAn animal cell, roughly cubical in shape with side length of 10 μm, uses 109 ATP molecules every minute. assume that the cell replaces this ATP by the oxidation of glucose according to the overall reaction 6O2 + C6H12O6 →6CO2 + 6H2O and that complete oxidation of each glucose molecule produces 30 ATP molecules. how much oxygen does the cell consume every minute? How long will it take before the cell has used up an amount of oxygen gas equal to its own volume?arrow_forward
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