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1. How can a chemical reaction that is energetically unfavorable under standard conditions occur in a...
5. How can a chemical reaction that is energetically unfavorable under standard conditions (AG"'>0) occur in...
5. How can a chemical reaction that is energetically unfavorable under standard conditions (AG"'>0) occur in a cell?
Question 4 30 pts How can a metabolic pathway contain an energetically unfavorable reaction yet still...
Question 4 30 pts How can a metabolic pathway contain an energetically unfavorable reaction yet still occur? The free-energy changes of the individual steps in a pathway are summed to determine the overall free-energy change. [Choose] TRUE FALSE [Choose] A step in a pathway that is energetically unfavorable can be driven by coupling it to a thermodynamically favorable reaction. [Choose ] At equilibrium, very few "energetically unfavored" products might be present - but if these unfavored products are then being...
Which one or more of the following reactions will NOT occur spontaneously under the standard conditions...
Which one or more of the following reactions will NOT occur spontaneously under the standard conditions that specify AGº? (a) ADP + Pi — ATP AG° = +7.3 kcal/mole (b) glucose-1-phosphate glucose-6-phosphate AGº = -1.7 kcal/mole (c) glucose + fructose sucrose AG° = +5.5 kcal/mole (d) glucose + CO2 + H2O AGⓇ = -686 kcal/mole (a) and (d) O (c) only (b) and (c) (d) only (a) and (c) (a) only
1. In a cell, a thermodynamically unfavorable process can occur if the process is coupled to...
1. In a cell, a thermodynamically unfavorable process can occur if the process is coupled to a thermodynamically favorable process. the process is thermodynamically favorable outside the cell. an enzyme gives energy to the reacting substances. the cell as a whole is close to equilibrium. 2. In an active transport protein, ATP hydrolysis creates a channel through the membrane. ATP uses the protein to move across the membrane. ATP hydrolysis causes the protein to change shape. ATP carries a substance...
Reaction [1]: Under the right conditions, the reverse reaction of the above reaction [1] can also...
Reaction [1]:
Under the right conditions, the reverse
reaction of the above reaction [1] can
also occur (please see reaction [2] below).
Reaction [2]:
Write a balanced chemical equation for this reverse reaction.
What is this reaction called?
ОН хөн + HBr Heat Xor + H2O
1. Show the chemical reaction that takes place when Benedict's reagent (Cu") reacts with glucose (use...
1. Show the chemical reaction that takes place when Benedict's reagent (Cu") reacts with glucose (use open chain Fisher projection). 2. Do you expect fructose to give a positive reaction with Barfoed's reagent? Explain why or why not. Indicate which of the test carbohydrates (glucose, fructose, lactose, sucrose, starch) would give 5- hydroxymethylfurfural when heated with hydrochloric acid. (See description of reactions for Barfoed's reagent and Seliwanoffs reagent). 3. 121
Like glucose, fructose can undergo a cyclization reaction. The most common reaction involves the ketone group...
Like glucose, fructose can undergo a cyclization reaction. The most common reaction involves the ketone group and the C5 hydroxyl group. Draw the structures of the two possible reaction products. What is the size of the ring? Repeat the exercise described in part (a), but use the C6 hydroxyl group instead. What is the size of the resulting ring?
need help with these two questions please A chemist optimizes a chemical reaction such that product...
need help with these two questions please
A chemist optimizes a chemical reaction such that product concentration exceeds the concentration of the reactants. What conclusion can be drawn about Keq and A G' in this reaction? Keq=1, AG=0 K'eq=1, AG"">0 Keq>1, AGO <O Keq>1, AGC > Question 6 1 pts According to data in Table 13-6 of your textbook, which of the following reactions should be spontaneous under standard conditions? Phosphocreatine + pyruvate --> phosphoenol pyruvate + creatine Glucose-3-phosphate +...
Under standard conditions, what is the maximum electrical work, in joules, that the cell can...
Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 85.0g of Sn is consumed? Answer Wmax in Joules.A voltaic cell is based on the reaction :Sn(s) + I2 (2) --> Sn^2+(aq) + 2I^-(aq)
Consider a possible voltaic cell utilizing a redox reaction between Ni and Zn under standard conditions....
Consider a possible voltaic cell utilizing a redox reaction between Ni and Zn under standard conditions. Determine the E0cell for this potential reaction. Will this set up work as a more efficient chemical battery than using Cu and Zn?
5. How can a chemical reaction that is energetically unfavorable under standard conditions (AG"'>0) occur in a cell?
Question 4 30 pts How can a metabolic pathway contain an energetically unfavorable reaction yet still occur? The free-energy changes of the individual steps in a pathway are summed to determine the overall free-energy change. [Choose] TRUE FALSE [Choose] A step in a pathway that is energetically unfavorable can be driven by coupling it to a thermodynamically favorable reaction. [Choose ] At equilibrium, very few "energetically unfavored" products might be present - but if these unfavored products are then being...
Which one or more of the following reactions will NOT occur spontaneously under the standard conditions that specify AGº? (a) ADP + Pi — ATP AG° = +7.3 kcal/mole (b) glucose-1-phosphate glucose-6-phosphate AGº = -1.7 kcal/mole (c) glucose + fructose sucrose AG° = +5.5 kcal/mole (d) glucose + CO2 + H2O AGⓇ = -686 kcal/mole (a) and (d) O (c) only (b) and (c) (d) only (a) and (c) (a) only
Reaction [1]:
Under the right conditions, the reverse
reaction of the above reaction [1] can
also occur (please see reaction [2] below).
Reaction [2]:
Write a balanced chemical equation for this reverse reaction.
What is this reaction called?
ОН хөн + HBr Heat Xor + H2O
1. Show the chemical reaction that takes place when Benedict's reagent (Cu") reacts with glucose (use open chain Fisher projection). 2. Do you expect fructose to give a positive reaction with Barfoed's reagent? Explain why or why not. Indicate which of the test carbohydrates (glucose, fructose, lactose, sucrose, starch) would give 5- hydroxymethylfurfural when heated with hydrochloric acid. (See description of reactions for Barfoed's reagent and Seliwanoffs reagent). 3. 121
need help with these two questions please
A chemist optimizes a chemical reaction such that product concentration exceeds the concentration of the reactants. What conclusion can be drawn about Keq and A G' in this reaction? Keq=1, AG=0 K'eq=1, AG"">0 Keq>1, AGO <O Keq>1, AGC > Question 6 1 pts According to data in Table 13-6 of your textbook, which of the following reactions should be spontaneous under standard conditions? Phosphocreatine + pyruvate --> phosphoenol pyruvate + creatine Glucose-3-phosphate +...
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