Gram-Negative Nitrogen-Fixing Bacteria Found in Association with Plant Roots Are

question 23

Multiple Choice

Gram-negative nitrogen-fixing bacteria found in association with plant roots are

• A) alphaproteobacteria.
• B) betaproteobacteria.
• C) cyanobacteria.
• D) gammaproteobacteria.
• E) deeply branching bacteria.

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Definitions:

Net Present Value

A calculation used to assess the profitability of an investment, measuring the difference between the present value of cash inflows and outflows over a period of time.

Payback Period

The time required for the return on an investment to repay the sum of the original investment.

Annual After-Tax Net Income

The amount of money a company earns in one year after all expenses and taxes have been deducted.

Profitability Index

A calculation that measures the relative profitability of an investment by dividing the present value of its future cash flows by the initial investment cost.