Refer to the figure below. 
Inositol trisphosphate (IP3) and calcium ions function as second messengers in the signal transduction pathway shown in the figure.Explain one similarity and one difference in the mechanisms of these two second messengers as components of this pathway.
Definitions:
Working Capital
A financial metric representing the difference between a company's current assets and current liabilities, indicating short-term liquidity.
Capital Budgeting
Capital budgeting is the process a business undertakes to evaluate potential major investments or expenditures to achieve long-term benefits.
Straight-Line Depreciation
A depreciation method where an asset's cost is evenly distributed over its expected lifespan.
Net Present Value
A financial metric used to evaluate the profitability of an investment, calculated by subtracting the present value of cash outflows from the present value of cash inflows over a period.
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