CELL RESPIRATION
ATP ADENOSINE TRIPHOSPHATE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
from your cells
|
|
|
from the breakdown of macromolecules
|
|
|
from nucleic acids
|
|
|
through protein synthesis
|
Detailed explanation-1: -During a process called cellular respiration, the cell uses energy from food, including sugar, proteins, and fats, and connects a free phosphate molecule onto an ADP molecule, creating ATP.
Detailed explanation-2: -Energy derived from glucose catabolism is used to convert ADP into ATP. When ATP is used in a reaction, the third phosphate is temporarily attached to a substrate in a process called phosphorylation.
Detailed explanation-3: -As the electrons are passed through the chain hydrogen ions are pumped into the intermembrane space. This creates a hydrogen ion gradient, a source of stored energy. The enzyme ATP synthase can use the energy stored in this gradient to add a phosphate group to ADP to create ATP for the cell.
Detailed explanation-4: -We eat food which gives us energy to add another phosphate group to the ADP molecule, turning it into an ATP molecule.
Detailed explanation-5: -These phosphate groups all carry a negative charge, and the bonds between them are unstable and high in energy. When phoshpate groups are released from ATP by hydrolysis, the molecule takes on a more stable conformation, and therefore hydrolysis releases energy.