Which of the following is true? Please select all the descriptions that are true. The proton-motive force: is used to synthesize ATP. is powered by the hydrolysis of ATP. requires an intact membrane. consists of an unequal distribution of protons.
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- Which of the following processes will result in a direct net increase of ATP concentration? Group of answer choices Anabolic chemical pathways Primary Active transport dehydration synthesis GlycolysisFor each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase may be used more than once. ADP FADH2 H+ moderately protons ATP favorable higher NADH severely cytosol glucose lower NAD+ slightly electrons GTP matrix Pi unfavorable High-energy electrons are transferred through a series of molecules, and the energy released during these transfers is used to generate a gradient of , or . Because their concentration is outside than inside the mitochondria, the flow of , or , down the concentration gradient is energetically very and can thus be coupled to the production of ATP from ADP. Thus, oxidative phosphorylation refers to the…Which of the following is NOT true of ATP? ATP is renewable ATP holds energy ATP in nonrenewable ATP is generated via Oxidative Phosphorylation
- Classify the following into either activation processes or inhibitions processes. Process Phosphorylation of a transport protein (i.e. pump) The binding of a substrate molecule at the active site of an enzyme The binding of a molecule at the active site of an enzyme, but in place of the substrate The allosteric binding of ATP to the phosphofructokinase (an enzyme part of glycolysis)Which of the following statements regarding ATP is FALSE? ATP is derived from a B vitamin. ATP holds energy in the covalent bonds between negatively charged phosphate groups. OATP can transfer it's terminal phosphate to other molecules forming high- energy intermediates. The formation of ATP from ADP is an endergonic reaction. ATP is similar to GTP in that they are both phosphate carriers.The proton motive force is made as an example of what type of molecular movement? Facilitated (gated) Facilitated (channel) Active Passive
- Choose any/all that apply to the proton-motive force and ATP synthesis. The active pumping of protons through ATP synthase against their concentration gradient provides the energy needed for ATP synthesis. Rotation of the y subunit creates conformational changes in the active sites of ATP synthase that drive the release of ATP from the enzyme. Each 3 subunit of ATP synthase has a distinct amino acid sequence that accounts for the three different active sites present in the enzyme. The ATP molecules produced from the pair of electrons provided by NADH have greater potential energy than the ATP molecules produced from the pair of electrons provided by FADH₂. Inhibition of either ATP synthase or ATP translocase will stop flux through the electron- transport chain.Drag each label to the appropriate position to identify whether the rate of membrane reactions would be increased or decreased by the conditions given by the label. Increased oxygen concentration Decreased ATP concentration Increased NADH concentration Decreased FADH₂ concentration Increased Rate of Reaction (Reactants) (Reactants) Decreased Rate of Reaction (Products) (Products)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
- 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.ATP is an important molecule in cellular energetics. Which of the following statements is false? ATP hydrolysis can provide the energy required for mechanical work in a cell. All of the ATP made during cellular respiration is made by the enzyme ATP synthase. ATP synthesis is an endergonic reaction. None of the other answers are false.Review the following statements and discuss whether each one is correct, incorrect or partially correct: Con In the presence of oxygen glycolysis can yield a net production of 6 molecules of ATP per molecule of glucose. In the presence of oxygen glycolysis can yield a net production of 8 molecules of ATP per molecule of glucose. In the absence of oxygen glycolysis can yield a net production of 2 molecules of ATP per molecule of glucose. In the absence of oxygen glycolysis can yield a net production of 4 molecules of ATP per molecule of glucose