Our Current Understanding of the Origin of Eukaryotic Organelles Such

question 81

Multiple Choice

Our current understanding of the origin of eukaryotic organelles such as mitochondria is that they

• A) were copies of a cell nucleus that failed to be separated by cytokinesis.
• B) are prokaryotes that were taken into a cell and now live there symbiotically.
• C) are variations of the plasma membrane.
• D) are new forms of life that arose inside other cells.

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Definitions:

Economies of Scale

The cost advantages that enterprises obtain due to size, output, or scale of operation, with cost per unit of output generally decreasing with increasing scale.

Average-total-cost Curve

A graphical representation that shows the average total cost of producing each quantity of output.

Marginal-cost Curve

The marginal-cost curve depicts how the cost of producing one additional unit of a good or service varies as production increases.

Economies of Scale

The cost advantage that arises with increased output of a product, as costs are spread over a larger number of goods.