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.
Answer: A profit-sharing plan is a defined contribution plan in which your employer has discretion to determine when and how much the company pays into the plan. The amount allocated to each individual account is usually based on the salary level of the participant (employee).f you were to leave the company prior to full vesting and move your account elsewhere, you would forfeit all or a portion of the account's accumulated value. Profit-sharing plans are usually funded using mutual funds, variable annuities, or life insurance.