Why Are Microbes Ideal Model Organisms for Evolutionary Studies

question 36

Multiple Choice

Why are microbes ideal model organisms for evolutionary studies?

• A) diversity
• B) rapid reproduction
• C) slow mutation rate
• D) a and b
• E) a, b, and c

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Definitions:

Contribution Margin

The difference between sales revenue and variable costs, indicating how much revenue contributes to covering fixed costs.

Variable Costing

A bookkeeping approach that incorporates just the variable costs of production (such as direct materials, direct labor, and variable factory overheads) into the costs of products.

Variable Costing

A costing method that includes only variable production costs—direct materials, direct labor, and variable manufacturing overhead—in product costs, excluding fixed overhead.

Net Operating Income

A measure of a company's profitability from its core business operations, excluding deductions of interest and taxes.