A common human behavior happens in your biology lecture. You observe a student yawning, and then you and other people yawn. Each student now completes an entire yawn, taking some six seconds to complete. The behavior of yawning to completion after your yawn was triggered by the stimulus of seeing someone else yawn is termed a
A. fixed action pattern.
B. substantive blueprint.
C. methodology template.
D. maximum survival pattern.
E. minimum survival pattern.
A. fixed action pattern.
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Action potentials are propagated in a one-way direction down a neuron plasma membrane because
a. the action potential is of insufficient intensity to stimulate the voltage-gated ion channels behind it. b. the adjacent channels upstream from the action potential are ligand-gated. c. the adjacent channels upstream from the action potential are in their refractory period. d. voltage-gated ion channels are suppressed. e. the adjacent channels upstream from the action potential are at their threshold potential.
What distribution pattern is the most common in the natural world?
a. random b. uniform c. clumped d. stratified or layered e. bimodal
The part of the ear actually responsible for
hearing is the
a. hammer, anvil, and stirrup. b. cochlea. c. vestibular apparatus. d. organ of Corti. e. combination of the organ of Corti and the vestibular apparatus
The sequence of amino acids in a protein represents its ____
a. primary structure b. secondary structure c. three dimensional shape d. tertiary folding pattern e. biological function