The Evolution of Eukaryotic Cells Most Likely Involved ________

question 27

Multiple Choice

The evolution of eukaryotic cells most likely involved ________.

• A) endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into chloroplasts
• B) endosymbiosis of a photosynthetic archaeal cell in a larger bacterial host cell to escape toxic oxygen-the anaerobic archaea evolved into chloroplasts
• C) endosymbiosis of an oxygen-using bacterium in a larger bacterial host cell-the endosymbiont evolved into mitochondria
• D) evolution of an endomembrane system and subsequent evolution of mitochondria from a portion of the smooth endoplasmic reticulum

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Definitions:

Variable Cost

Costs that change in proportion to the level of goods or services produced by a business.

Total Cost

The overall expense incurred in the production of goods or services, including both fixed and variable costs.

Average Variable Cost

It is calculated by dividing total variable costs by the total output produced, representing the variable cost per unit of output.

Variable Cost

Costs that change with the level of production or business activity, such as materials and labor.