Based on the figure, how are transcription factors like a switch? 
Definitions:
P/E Ratio
Price to Earnings (P/E) ratio is a valuation metric that compares the price of a stock to its per-share earnings, indicating how much investors are willing to pay per dollar of earnings.
Earnings Per Share
A company's profit divided by the number of outstanding shares of its common stock.
Equity Multiplier
A financial leverage ratio that indicates the portion of a company’s assets that are financed by stockholder's equity, calculated by dividing total assets by total shareholders' equity.
Financial Leverage
Use of borrowed funds to increase the potential return of an investment.
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