A nerve impulse does not vary in intensity with regard to the strength of the stimulus. What do we call this phenomenon?
A) refractory period B) resting membrane potential
C) graded response D) all-or-nothing principle
Answer: D
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What will be an ideal response?
Most biomass in trees is found in leaves, which do undergo photosynthesis
Indicate whether the statement is true or false.
Four of the following are shared characteristics of parabasalids and diplomonads. Which is the exception?
a. heterotrophy b. flagella c. oxygen-poor or anaerobic habitats d. abundant mitochondria e. presence of a pellicle
Which of the following is NOT part of the peripheral nervous system:
a. the somatic nervous system b. the autonomic nervous system c. nerves branching out from the spinal cord d. the brain