A Graduate Student Filtered a Liter of Seawater Using a Millipore

question 45

Multiple Choice

A graduate student filtered a liter of seawater using a Millipore filter membrane of 2 $\mu$ m pore size. Which of the following is true about his filtrate?

• A) It is sterile.
• B) Microplanktons are present.
• C) Contains picoplanktons.
• D) The filtrate contains nanoplanktons.
• E) None of the above.

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Definitions:

Investment Turnover

A measure of a company's efficiency in using its investments to generate sales, usually calculated as sales divided by average invested assets.

Return On Investment

A measure used to evaluate the efficiency or profitability of an investment, calculated by dividing net profit by the cost of the investment.

Sales To Invested Assets

A financial ratio that measures how efficiently a company uses its invested assets to generate sales.

Residual Income

The amount of net income generated beyond the minimum rate of return or benchmarks set by a business or investor.