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Multiple Choice
What occurs in the reaction called phosphorylation?
A
A phosphate group is added to a molecule.
B
A phosphate group is removed from a molecule.
C
A water molecule is added to a molecule.
D
A hydrogen atom is added to a molecule.
Verified step by step guidance
1
Understand the concept of phosphorylation: Phosphorylation is a biochemical process that involves the addition of a phosphate group to a molecule, typically a protein or other organic molecule.
Identify the role of phosphate groups: Phosphate groups are composed of phosphorus and oxygen atoms, and their addition can alter the function or activity of the target molecule.
Recognize the importance of phosphorylation in cellular processes: Phosphorylation is crucial for regulating various cellular activities, including signal transduction, metabolism, and cell cycle progression.
Differentiate phosphorylation from other reactions: Unlike hydrolysis, which involves the addition of a water molecule, or hydrogenation, which involves the addition of hydrogen atoms, phosphorylation specifically involves the addition of a phosphate group.
Apply this understanding to the problem: Given the options, identify that phosphorylation involves the addition of a phosphate group to a molecule, distinguishing it from the removal of a phosphate group or the addition of water or hydrogen atoms.