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1)When a phosphate is transferred from ATP, it can phosphorylate another molecule. How could this assist in allowing a protein to transport molecules against their concentration gradient?
2)What is it about the structure of ATP that contributes to its ability to act as an energy currency?

Answer :

KerryM

Answer/Explanation:

1) When phosphate is transferred from ATP, (which forms ADP and releases energy) it can phosphorylate another molecule. When this molecule is phosphorylated. It could become "energized" as it enters a higher energy state.

In this higher energy state, the protein has the energy to transfer molecules against a concentration gradient, which is an active process (requires energy).

2) Adenosine triphosphate contains three phosphate groups. The phosphate bonds are high energy. When ATP is hydrolyzed (water is added), these high energy phosphate bonds are broken and energy is released. This forms adenosine diphosphate (ADP).

samueladesida43

1) When a protein molecule is phosphorylated, it becomes activated or powered and enables it transport molecules against their concentration gradient.

2) The bond that holds phosphate bonds in ATP gives it the ability to act as an energy currency.

ADENOSINE TRIPHOSPHATE (ATP)

  • Adenosine triphosphate, commonly known as ATP, is the means by which energy is stored and released in the cells of biological organisms.

  • ATP is structurally made up of a ribose sugar, an Adenine base and three phosphate groups. The phosphate groups are held together by a bond called phosphoanhydride bond.

  • ATP stores energy when one phosphate molecule is added to ADP while it releases energy when one phosphate group is broken. This latter process is called PHOSPHORYLATION.

  • The ability of ATP to lose and accept phosphate group in its structure makes it perform the role of an energy currency in the cell.

  • However, when a phosphate group is added to a molecule e.g. a transport protein, it is said to be phosphorylated. This means it will become activated or powered up to perform the task of transporting molecules against their concentration gradient.

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