The recipient cells actually take up the donor cells DNA and produce the same phenotype as the donor except they were antibiotic resistant from the start so with the combining of these genes the new bacterial cells are like the donors but now antibiotic resistant themselves
When runner was running he was sweating which results in loss of water from cells and cells become shrink. But at the end of marathon when he drink water his cells will gain water and store it, which results in swallowing of cells.