Volvox, the Multicellular Green Alga Shown Below, Has Flagellated Cells

question 39

Multiple Choice

Volvox, the multicellular green alga shown below, has flagellated cells on its surface cells but not on interior cells. How might this condition develop?

• A)Interior cells attempt to grow flagella, but the lack of open space suppresses the effort.
• B)Interior cells discard the genetic instructions for flagella once their interior position is established.
• C)The commitment of resources for photosynthesis reduces the availability of protein and other biomolecules needed to produce flagella.
• D)Signals from surface cells or the absence of signals from the environment to the plasma membranes of the interior cells suppresses the growth of flagella.

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Definitions:

Contribution Margin Ratio

The proportion of sales revenue that exceeds variable costs, represented as a percentage.

Fixed Monthly Expenses

Costs that do not vary from month to month, such as rent, insurance, and salaries.

Unit Variable Cost

The cost associated with producing an additional unit of product, which includes materials, labor, and any other expenses that increase with each unit produced.

Monthly Sales

The total revenue generated from sales of goods or services within a month.