Diffusion Across a Cell Membrane. Diffusion is the movement of a substance across a membrane. Substances diffuse across cell membranes in a process known as passive transport. This means that the cell does not expend any energy in transporting substances across the cell membrane. Instead, substances move down their concentration gradient as a result of random thermal motion.
401k and profit sharing plans are both forms of retirement plans. They allow employees to make pre-tax contributions to an account where contributions and earnings are not taxed until distributed. Some 401k plans require an employer to make contributions to a plan.
Sometimes the bonuses are given across the board, and sometimes they are given in larger percentages of compensation the more someone makes. The purpose of profit sharing bonuses is to encourage employees to understand how their work affects the company's performance and to improve the company's profitability. Learn how your company makes money and how your position can help it make more.