Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 6, Problem 3VCQ
Figure 6.14 The hydrolysis of one ATP molecule releases 7.3 kcal/mol of energy (?G = -7.3 kcal/mol of energy). If it takes 2.1 kcal/mol of energy to move
one Na+ across the membrane (?G = +2.1 kcal/mol of energy), how many sodium ions could be moved by the hydrolysis of one ATP molecule?
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You know that the free energy of ATP hydrolysis depends on the ATP/ADP ratio.
Given that under standard conditions DGo = -30.5 kJ/mol, what should be DG of ATP hydrolysis under normal intracellular concentrations?
[ATP] = 2.3 mM, [ADP] = 0.25 mM, [Pi] = 1.65 mM
What is the energy of ATP hydrolysis in a cell that is ATP-depleted?
[ATP] = 0.1 mM, [ADP] = 2.8 mM, [Pi] = 1.65 mM
The average human generates approximately their own weight in ATP every day. A
resting person uses about 25 % of this in ion transport - mostly via the Na*/K*
ATPase. About how many grams of Na* and K* will a sedentary 90-kg person pump
across membranes in a day assuming 25 % of ATP is used to pump Na* and K* via
Na*/K* ATPase?
Each proton that moves across the membrane releases about 14 kJ/mol of energy. Given that ATP requires 30.5 kJ/mol of energy to form, how many protons cross the membrane per ATP synthesized? (Hint: can you have half a proton?)
Chapter 6 Solutions
Biology 2e
Ch. 6 - Figure 6.8 Look at each of the processes shown,...Ch. 6 - Figure 6.10 If no activation energy were required...Ch. 6 - Figure 6.14 The hydrolysis of one ATP molecule...Ch. 6 - Energy is stored long-term in the bonds of and...Ch. 6 - DNA replication involves unwinding two strands of...Ch. 6 - Consider a pendulum swinging. Which type(s) of...Ch. 6 - Which of the following comparisons or contrasts...Ch. 6 - Which of the following is the best way to judge...Ch. 6 - Which of the following is not an example of an...Ch. 6 - In each of the three systems, determine the state...
Ch. 6 - The energy released by the hydrolysis of ATP is...Ch. 6 - Which of the following molecules is likely to have...Ch. 6 - Which of the following is not true about enzymes...Ch. 6 - An allosteric inhibitor does which of the...Ch. 6 - Which of the following analogies best describes...Ch. 6 - Does physical exercise involve anabolic and/or...Ch. 6 - Name two different cellular functions that require...Ch. 6 - Explain in your own words the difference between a...Ch. 6 - Describe the position of the transition state on a...Ch. 6 - Imagine an elaborate ant farm with tunnels and...Ch. 6 - Energy transfers take place constantly in everyday...Ch. 6 - Do you think that the Ea for ATP hydrolysis is...Ch. 6 - With regard to enzymes, why are vitamins necessary...Ch. 6 - Explain in your own words how enzyme feedback...
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