usually a single cell develops into a huge mass to form a substance or an organism. is this happening because of multiplication of sub-atomic particles? if yes, then is it possible to multiply the cell number, as it is usually happening in our body tissue?
Biological processes do not generate atoms or even sub-atomic particles out of thin air. When a cell splits, the number of total atoms in the daughter cells is exactly the number of atoms in the mother cell. Sustained growth is possible since nutrition provides an external source of energy and raw material, allowing the daughter cells to grow and achieve enough mass for another split. Nothing of this is connected to subatomic physics.
Cells reproduce by growing and dividing, but they do not duplicate each atom, molecule, or subatomic particle individually prior to doing so. Cells take in nutrients from their outside environment; in a human, these nutrients are initially carried by the digestive system. These nutrients contain carbon, as well as other elements, needed for cell growth, and also sustain it throughout its life. Before a cell divides, it reproduces its chromosomes, so it has two sets of DNA (the process is different in the formation of eggs and sperm). The additional set is built up from nutrients taken in from outside the cell; additional cell parts are also manufactured this way. When duplication is complete, the cell splits, creating new daughter cells which then grow and develop, and, eventually, reproduce. Basically, the atoms of the cell do not reproduce; the cell takes in nutrients and uses them to build new cell parts. Improper construction of the DNA can lead to mutations in the cell. So the answer to your question is no. I'm not sure what the second part of your question means, although it appears to be moot.
No. There is no way we can produce baryonic matter out of void. Most of the non-dark matter in the Universe is hydrogen, which is fused into heavier elements inside of stars. There is no "copying" of matter, only rearrangement from one form into another (or transfer from matter to energy or vice versa).
While you can theoretically turn energy into matter, it would take a tremendous amount of energy to create a teeny-tiny amount of matter (consider a nuclear bomb in reverse) and even then there is no straightforward way we know of to do that.
Biological processes are best left to another SE field, but cells grow by absorbing and processing existing matter. This is why we have to do boring things like breathe and eat: the stuff which composes us must come from somewhere.