The mechanical force generated by a contracting muscle is:
a. muscle fatigue
b. a motor unit
c. muscle tension
d. a muscle twitch
e. tetanus
c
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Studies of the Pax6 and homologues suggest that the
A. eye has evolved independently multiple times. B. eyes of many different species are descended from a common ancestor. C. master gene of the eye in various species is not homologous. D. eye has evolved independently multiple times and master gene of the eye in various species is not homologous are correct. E. eyes of insects, like Drosophila, derived many times from many ancestors.
In humans, an adult suffering from hyperthyroidism ____
a. is always tired b. shows lack of emotions c. experiences insomnia and weight loss
d. sleeps a significant amount of the time e. has a low heart rate
What % of the Earth's water is contained in the oceans?
a. 25% b. 92% c. 70% d. 65% e. 50%
A chylomicron is a:
a. hormone. b. digestive enzyme. c. protein-covered fat droplet. d. component of bile. e. component of fiber.