Which term refers to a form of energy that activates receptor endings of sensory neurons?
a. threshold
b. sensation
c. transduction
d. stimulus
e. action potential
ANSWER: d
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A storage container in a cell is generally called a(n)
A. vacuole. B. endoplasmic reticulum. C. pinocyte. D. nucleus.
Which of the following structures is made of membranes?
A. chromosomes B. microtubules C. endoplasmic reticulum D. ribosomes
Habitat fragmentation has forced many species into smaller habitats, which results in increased mortality within populations. To give these species access to larger habitats, wildlife biologists developed
A) minimum critical areas. B) enormous water tanks. C) diverse communities of plants. D) underground tunnels for animal movement. E) wildlife corridors.
The CDC is located in
A) Atlanta, GA. B) Washington, DC. C) New York City, NY. D) Los Angeles, CA. E) Chicago, IL.