In ______________, Carrier Molecules Move a Substance Against (Up) the Concentration

question 16

Multiple Choice

In ______________, carrier molecules move a substance against (up) the concentration gradient.

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

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Definitions:

Adrenal Glands

Endocrine glands, located on top of each kidney, that secrete hormones and affect metabolism.

Synaptic Cleft

The space between neurons.

Neurons

Nerve cells.

Sympathetic Nervous System

A part of the autonomic nervous system that controls the body’s response to perceived threats, often termed as the "fight or flight" response.