Mechanism of ATP/ADP Cycle

whenever we talk about energy we think

about the molecule called ATP it always

strikes our mind and we recall a premise

centres related to this ATP molecule -

it is the energy currency of the cell is

because these are the molecules that

drive our all cellular processes inside

our body but when this ATP gets used how

it gets recycle it was the process let's

find out in this video so the process

while ATP gets used and recycle it again

is the ADP cycle first point we see here

is a cyclic biochemical process that

yields ATP from ADP we get adenosine

triphosphate from adenosine diphosphate

there must be any addition or phosphate

group here second point we see it there

is a phosphorylation of adenosine

diphosphate that means addition of

phosphate molecule to that ADP so that

we get adenosine triphosphate and

another process occurs in this process

in the ATP cycle is the hydrolysis of

ATP molecule which means there is a

breakdown of ATP molecule due to the

reaction of water and finally we see the

adp cycle releases energy stored in

phosphoanhydride bond so it's the bond

that's present between oxygen molecule

and phosphorus molecule and it must be

noted here it's not the phosphate group

of inorganic phosphate that releases

energy but it is the bond between

phosphorus and oxygen that has got lot

of energy in it but it's a weak bond

easy to break and it releases immense

energy let's see the cycle now we have

an ADP molecule that's adenosine

diphosphate molecule and we see it has

got two phosphates down to it and this

ADP molecule gets transformed into a TP

- adenosine tri prospect so now it has

got three phosphates bound to it that

means there is an addition of inorganic

phosphate here which

adds to the ADP molecule making it ATP

then and for this the energy is required

to make a bond that means it's

endothermic reaction here this needs

energy and we get this energy from

cellular respiration like glycolysis

after we get ATP from ADP this ATP soft

release energy because the last

phosphate that has recently added to it

is highly unstable because of the

negative charges because of the

repulsive charges that exhibited by the

three negative charges species that's

oxygen in that case so here the last

phosphate the unstable phosphate gets

listed from this ATP and is transformed

into ADP again and this relation ages by

the water - there is hydrolysis of ATP

molecule and from this we get the

inorganic phosphate back and there is a

release of immense energy because the

possible and hydride bond is broken here

which has got lot of energy in it in the

cycle we see two types of reaction first

is endothermic reaction where there is

absorption of energy by ADP molecule

because it needs energy to make another

bond bit inorganic phosphate so that it

becomes ATP molecule and when there is a

tu molecule there is hydrolysis of this

ATP moles which it releases energy that

means this reaction is exothermic

reaction because it releases energy here

if we see the reaction here ADP molecule

combine is inorganic phosphate in

presence of energy it use ATP molecule

plus energy that means there is the

absorption of energy scales release of


so both endothermic as well as

exothermic energy is here so in order to

drive the cellular process there must be

any total gain in energy so it must be

noted here the energy is listed is

always greater than the energy absorbed

in that ATP cycle so we have a total

gain here ATP plus water that gives us

ADP plus inorganic phosphate plus energy

and gives us reversible relation that

makes it a cycle so this was all about

ATP cycle in the next part of the video

will be

thing about how ATP used energy and why

this ADP gives energy and why it is

highly unstable molecule than ADB I hope

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