The Plasma Membranes of Some Plant Cells Use Transport Proteins

question 125

Multiple Choice

The plasma membranes of some plant cells use transport proteins to move protons out of the cell against their concentration gradient. This is an example of:

• A)facilitated diffusion.
• B)passive transport.
• C)endocytosis.
• D)active transport.
• E)simple diffusion

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Definitions:

Indirect Materials

Materials that are used in the production process but are not directly traceable to a finished product.

Direct Materials

Raw materials that are directly used in the manufacturing of a product and can be directly traced to the goods being produced.

Predetermined Overhead Rate

An estimated rate used to allocate manufacturing overhead to individual units of production based on a specific activity base.

Direct Labor-Hours

The total hours worked directly on the production of goods.