When glucose reacts with ATP to form glucose- 6 -phosphate:...

Name: Problem 4, Chapter 4: Biology: The Dynamic Science
Uploaded: 2021-07-12T22:35:46-08:00
Duration: 1 min 49 s
Channel: Joanna Quigley
Description: When glucose reacts with ATP to form glucose- 6 -phosphate: a. the synthesis of glucose-6-phosphate is exergonic. b. ADP is at a higher energy level than ATP. c. glucose-6-phosphate is at a higher energy level than glucose. d. because ATP donates a phosphate to glucose, this is not a coupled reaction. e. the reaction is spontaneous.

When glucose reacts with ATP to form glucose- 6 -phosphate: a. the synthesis of glucose-6-phosphate is exergonic. b. ADP is at a higher energy level than ATP. c. glucose-6-phosphate is at a higher energy level than glucose. d. because ATP donates a phosphate to glucose, this is not a coupled reaction. e. the reaction is spontaneous.

When glucose reacts with ATP to form glucose- 6 -phosphate:
a. the synthesis of glucose-6-phosphate is exergonic.
b. ADP is at a higher energy level than ATP.
c. glucose-6-phosphate is at a higher energy level than glucose.
d. because ATP donates a phosphate to glucose, this is not a coupled reaction.
e. the reaction is spontaneous.

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Key Concepts

ATP Hydrolysis

ATP hydrolysis refers to the process by which adenosine triphosphate (ATP) is converted into adenosine diphosphate (ADP) and an inorganic phosphate, releasing energy in the process. This reaction is highly exergonic and provides the free energy necessary to drive many endergonic reactions in the cell.

Coupled Reactions

Coupled reactions are processes in which an unfavorable, endergonic reaction is linked to a favorable, exergonic reaction so that the overall reaction proceeds spontaneously. This mechanism is essential in cellular metabolism to enable reactions that would otherwise require an energy input by harnessing the energy from ATP hydrolysis.

Phosphorylation

Phosphorylation is the biochemical process of adding a phosphate group to a molecule, often significantly altering its properties and reactivity. In metabolic pathways, phosphorylation reactions serve to 'activate' substrates, raising their energy levels and facilitating subsequent biochemical transformations.

Free Energy Changes

Free energy change (?G) in a reaction determines whether it is spontaneous (exergonic, negative ?G) or non-spontaneous (endergonic, positive ?G). Understanding the free energy change is crucial for analyzing metabolic reactions and energy coupling in biological systems.

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