Cells Move Polar Molecules Across the Cell Membrane Against a Concentration

question 10

Multiple Choice

Cells move polar molecules across the cell membrane against a concentration gradient using

• A) energy and transport proteins.
• B) simple diffusion.
• C) modifications to membrane lipids.
• D) random molecular movement.

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Definitions:

X-Ray Images

Pictures obtained by using X-ray technology to visualize the internal structures of the body, aiding in medical diagnosis.

Screen Monitor

An electronic output device that displays information in pictorial form, usually used with computers.

Projecting

The act of extending outwards or forwards or the act of estimating or forecasting something based on current trends or data.

Posteroanterior

An orientation term in radiology indicating that an x-ray beam passes from the back to the front of the body.