There Are Two Competing Theories Put Forth to Explain the Origin

question 119

Multiple Choice

There are two competing theories put forth to explain the origin of eukaryotic cells. Which of the following CORRECTLY states one of these theories?

• A)Ancient eukaryotic cells resembling archaeal cells acquired symbiotic bacteria that eventually took up permanent residence to become mitochondria.
• B)Two types of prokaryotic cells, one of which was photosynthetic, fused to become the first ancient eukaryotic cell.
• C)A symbiotic relationship between a cyanobacteria and an archaeon created the first ancient eukaryotic cell.
• D)Ancient eukaryotic cells resembling archaeal cells acquired symbiotic cyanobacteria that eventually took up permanent residence to become chloroplasts.

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Definitions:

Accounting Rate of Return

A financial metric used to assess the profitability of an investment, calculated as the average annual return over the investment's life divided by the initial investment cost.

Straight-Line Depreciation

An arrangement for apportioning the financial burden of a physical investment throughout its active life in equal yearly disbursements.

Accounting Rate of Return

A financial ratio used to measure the profitability of an investment, calculated as the average annual profit divided by the initial investment cost.

After-Tax Net Income

The amount of money a company earns in a given period after all taxes have been deducted from gross income.