Chapter 3.2 Flashcards
energy supplied to cells in orfer for them to dunction
ATP
what are the three types of work by ATP?
- Mechanical (contraction of muscles)
- Transport (pumping substances across membranes)
- Chemical (supplying chemical potential E for non-spontaneous endergonic reactions)
Energy currency in the cells in in the form of ______ or_______
E storing; e- carrying molecules
what can molecules do?
- store E in chemical bonds
2. give and take e- in Redox reactions
What is ATP?
adenosine triphiospate
composition of ATP
3 negatively charged phosphate groups nitrogenous base(adenosine) ribose sugar (5 C-sugar)
Hydrolysis reaction breaks of terminal end in?
ATP
Breaking down ATP releases E, and cells constantely replace their ATP by ___________. The energy for that comes from ________.
whacking a spare phospate onto ADP; the food we eat
what controls the breaking and making of ATP?
enzymes
The process of Energy Coupling
- ATP moves close to a reactant molecule undergoing an endergonic reaction
- Pi breaks off ATP (forming ADP) and transfers to another molecule
phosphorylation
- the transfer of a phosphate group, usually from AtP, to another molecule
- molecules gain free E and become more reactive
requires an enzyme to bring ATP molecule to the endergonic reaction
phosphorylation
Where does the energy come from?
- fuel molecules, like glucose, can be broken down inside cells
- energy removed from the fuel molecule can be picked up by E carrier molecules
- movemnt of e- in a specialized memebreane provides power to make ATP
hydrolysis of ATP results in?
the formation of ADP and Pi
