Repeated stimulation of a motor unit over a short period of time leads to
a. fatigue.
b. tetanus.
c. increased muscle strength.
d. muscle twitch.
e. increased ATP production.
B
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Optimal recovery and identification of anaerobic bacteria in clinical specimens occurs when:
a. the initial incubation period is at 35°C to 37°C for 48 hours. b. plates are incubated for at least 3 days before discarding as negative. c. the initial incubation period is at 35°C to 37°C for 24 hours. d. thioglycollate broth can be inspected daily for 3 days.
Which of the following does NOT represent a form of parental investment?
A. a spermatophore containing nutrients eaten by a female insect B. a male fish mouthbrooding eggs abandoned by a female C. a copulatory plug deposited in the reproductive tract of a female mouse D. a female bird incubating externally-laid eggs E. all of the above represent a form of parental investment
Many plants have evolved leaves that have adjustable pores, called ________, which allow for gas exchange and water loss
Fill in the blank(s) with correct word
The scala naturae, or scale of nature, is based on the ideas of __________.
a. Aristotle b. Darwin c. Lamarck d. Linnaeus e. Lyell