Cultures of the Same Species of Diatom Referred to in the Previous

question 3

Multiple Choice

Cultures of the same species of diatom referred to in the previous question were treated with BDM,a reversible inhibitor of myosin function.Which of the following predictions is consistent with the hypothesis that an actin-myosin interaction is necessary for motility?

• A)BDM will significantly decrease motility of the cells in culture.
• B)BDM will not significantly alter motility of the cells in culture.
• C)BDM will significantly increase motility of the cells in culture.

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Definitions:

Competitive Markets

Competitive markets are characterized by many buyers and sellers, allowing for free and open competition which dictates prices and quality of goods and services.

Economies Of Scale

The property whereby long-run average total cost falls as the quantity of output increases.

Competition

The rivalry among sellers trying to achieve such goals as increasing profits, market share, and sales volume by varying the elements of the marketing mix: price, product, distribution, and promotion.

Business-stealing Externality

A situation where a new entrant in a market captures a portion of the incumbent firms' customers, causing economic losses to existing businesses.