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The Anhydride Formed Between a Carboxylic Acid and a Phosphate

Question 19

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The anhydride formed between a carboxylic acid and a phosphate (Figure 3-45A) is a high-energy intermediate for some reactions in which ATP is the energy source.Arsenate can also be incorporated into a similar high-energy intermediate in place of the phosphate (Figure 3-45B) .Figure 3-45C shows the reaction profiles for the hydrolysis of these two high-energy intermediates.What is the effect of substituting arsenate for phosphate in this reaction? (A)
The anhydride formed between a carboxylic acid and a phosphate (Figure 3-45A) is a high-energy intermediate for some reactions in which ATP is the energy source.Arsenate can also be incorporated into a similar high-energy intermediate in place of the phosphate (Figure 3-45B) .Figure 3-45C shows the reaction profiles for the hydrolysis of these two high-energy intermediates.What is the effect of substituting arsenate for phosphate in this reaction? (A) (B) Figure 3-45 A) It forms a high-energy intermediate of lower energy. B) It forms a high-energy intermediate of the same energy. C) It decreases the stability of the high-energy intermediate. D) It increases the stability of the high-energy intermediate.

(B)
The anhydride formed between a carboxylic acid and a phosphate (Figure 3-45A) is a high-energy intermediate for some reactions in which ATP is the energy source.Arsenate can also be incorporated into a similar high-energy intermediate in place of the phosphate (Figure 3-45B) .Figure 3-45C shows the reaction profiles for the hydrolysis of these two high-energy intermediates.What is the effect of substituting arsenate for phosphate in this reaction? (A) (B) Figure 3-45 A) It forms a high-energy intermediate of lower energy. B) It forms a high-energy intermediate of the same energy. C) It decreases the stability of the high-energy intermediate. D) It increases the stability of the high-energy intermediate.


The anhydride formed between a carboxylic acid and a phosphate (Figure 3-45A) is a high-energy intermediate for some reactions in which ATP is the energy source.Arsenate can also be incorporated into a similar high-energy intermediate in place of the phosphate (Figure 3-45B) .Figure 3-45C shows the reaction profiles for the hydrolysis of these two high-energy intermediates.What is the effect of substituting arsenate for phosphate in this reaction? (A) (B) Figure 3-45 A) It forms a high-energy intermediate of lower energy. B) It forms a high-energy intermediate of the same energy. C) It decreases the stability of the high-energy intermediate. D) It increases the stability of the high-energy intermediate.
Figure 3-45


A) It forms a high-energy intermediate of lower energy.
B) It forms a high-energy intermediate of the same energy.
C) It decreases the stability of the high-energy intermediate.
D) It increases the stability of the high-energy intermediate.

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