ATP

Created by

Daisy

Cards (13)

What is ATP? 
The immediate source of energy in a cell
Can a cell get its energy directly from glucose?
NO , so in respiration , the energy released from glucose is used to make ATP
ATP stands for? 
adenosine triphosphate
What does ATP do?
carries energy around the cell to where it is needed
how is ATP synthesised?
via a condensation reaction between ADP and Pi, using energy from an energy-releasing reaction
The energy is stored as CHEMICAL ENERGY in the phosphate bond.
The enzyme ATP synthase catalyses this reaction
Where does ATP DIFFUSE TO?
the part of the cell that needs energy
Here, it is hydrolysed back to ADP and Pi. Chemical energy is released from the phosphate bond and USED by the cell
ATP HYDROLASE catalyses this reaction
ADP and Pi are recycled and the process starts again
What SIX specific properties does ATP have that make it a good energy source?
Stores/releases manageable amounts
Small, soluble molecule
Easily broken down
Quickly re-made
Phosphorylation
Cannot pass out of the cell
State one of the six properties that ATP has that make it a good energy source?
ATP stores/releases only a small, MANAGEABLE amount of energy at a time, so no energy is WASTED AS HEAT
State one of the six properties that ATP has that make it a good energy source? 
ATP is a small, soluble molecule so it can be easily transported around the cell
State one of the six properties that ATP has that make it a good energy source?
easily broken down, so energy easily released instantaneously
State one of the six properties that ATP has that make it a good energy source?
can be quickly re-made
state one of the SIX specific properties that ATP has that make it a good energy source?
can make other molecules more reactive by transferring one of its phosphate groups to them - PHOSPHORYLATION
state one of the SIX specific properties that ATP has that make it a good energy source?
Cannot pass out of the cell, so the cell ALWAYS has an IMMEDIATE ENERGY SUPPLY