What is the name of the process used by the nervous system to increase the strength of muscle contraction by stimulating more motor units?
Summation
Tetanus
Oxygen debt
Recruitment
D. Recruitment
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What is a secondary endosymbiont and how are they related to algae?
What will be an ideal response?
What fraction of the time will the cross of Aa Bb Cc with Aa Bb Cc produce an offspring that is purebreeding?
a. 3/64 b. 1/16 c. 1/8 d. 9/64 e. 27/64
The self-splicing of Group I introns
a. requires energy from the hydrolysis of ATP. b. gains energy from exergonic reactions involving inorganic compounds. c. occurs in a series of transesterifications that require no hydrolysis for energy. d. requires energy from the hydrolysis of GTP. e. gains energy directly from an electron transport chain.
In science, theories ______.
A. once proven, can never be rejected. B. can tie together a larger number of observations that previously seemed unrelated C. apply strictly to biological phenomena D. have limited explanatory power