The Trace Function

question 9

Multiple Choice

The trace function

• A) places cursors for distance measurement.
• B) erases cursors, outlines, and measurement results.
• C) places cursors for distance and transverse measurements.
• D) outlines circumference measurements.

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Definitions:

Cotransport

The active transport of a substance from a region of low concentration to a region of high concentration by coupling its transport to the transport of a substance down its concentration gradient.

Concentration Gradient

A gradual change in the concentration of solutes in a solution as a function of distance through a solution.

ATP

Adenosine Triphosphate, a molecule that stores and transfers energy within cells, crucial for many cellular processes.

Facilitated Diffusion

The passive transport of ions or molecules by a specific carrier protein in a membrane. As in simple diffusion, net transport is down a concentration gradient, and no additional energy has to be supplied. Compare with diffusion and active transport.