One motor neuron activates one muscle fiber.
Answer the following statement true (T) or false (F)
False
One motor neuron can stimulate from a few to several muscle fibers of a muscle because each axon has several branches.
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Which of the following is a correct comparison between RNA polymerase holoenzyme that functions in transcription and the primase enzyme that functions in DNA replication?
A. Both enzymes synthesize DNA. B. Both enzymes are composed of RNA. C. Both enzymes synthesize RNA. D. Both enzymes are bound by sigma factor.
If a car is similar to an organism, then what is similar to an organ system?
A) a valve in the engine B) the steering wheel C) the electrical system D) gasoline
What is the function of valves in the heart?
a. to prevent backflow of blood b. to prevent clot formation c. to form blood cells d. to push blood ahead
Which disease has been essentially eliminated as a result of rigorous vaccination and quarantining procedures?
a. bubonic plague b. encephalitis c. malaria d. smallpox