Question

only for 12th class student....
Don't answer if you don't know..
can anyone tell me that ....
what happen if we change the human DNA with a cheetah DNA ...does it make it faster...
and anyone knows about the 'Antimatter'
if a 1g of antimatter is placed or reacted with 1g of matter.....what will happen???

answer only if u know....

Answer 1

1.Either that, or nothing would happen aside for - a DNase-mediated degradation of the cheetah DNA.
  
It is also possible that an IV injection might trigger a potent anti-DNA immune response, which could sicken or possibly kill you via inciting a pro-inflammitroy "cytokine storm."  Such a reaction would probably be dose-dependent.

A final possibility is that you could develop an autoimmune disease.  This could happen if the antibodies and T cell receptors generated and selected in defense of this exogenous DNA happened to also be cross reactive with self-antigens anywhere in your body.

I don't recommend trying this experiment at home.
2.

When matter and antimatter collide, they completely and mutually annihilate, transforming all of their mass and kinetic energy into new particles with mass, or into gamma rays (a high energy form of light). Note though that a particle of antimatter must collide with its corresponding regular matter particle for this to happen, because all sorts of conservation laws have to be kept. For instance, an electron will not self-annihilate with an anti-neutrino. An electron will only self-annihilate with an anti-electron (a.k.a a positron). It is most common for the a matter-antimatter annihilation event to create two gamma rays.

Since all of the mass is converted to energy when a matter-antimatter annihilation event creates two gamma rays, the event creates an intense amount of energy per particle. In other words, throwing a thimble-full of antimatter at your couch would level the city. Fortunately, in our universe, antimatter only shows up in very small amounts.

Despite showing up in very small amounts, antimatter is actually quite common. Antimatter is produced in many instances of natural radioactive decay. For instance, right now in your body there are minute amounts of the natural, radioactive potassium-40 atom. When these atoms radioactively decay, they sometimes produce antimatter. This antimatter in your body quickly strikes an atom in your body, annihilates, and turns into gamma rays. So, yes, there is antimatter in your body right now. But the amounts are so minute that they have little effect on your life. We lump them in with other forms of background radiation.