In a negative feedback system, ____
a. the response of the integrator is aligned with the output of the sensor
b. a sensor brings the system back to the setpoint
c. a steady state condition cannot be identified
d. the response of the integrator is opposite the output of the sensor
e. the resulting outcome is always greater than the input
d
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In muscle contraction, which of the following
triggers the power stroke?
a. release of Pi from the myosin head b. binding of ATP to the myosin head c. hydrolysis of ATP into ADP and Pi d. cross-bridge formation between actin and myosin e. relaxation of the sarcomere
What process refers to dramatic phenotypic changes that sometimes occur in evolution, such as the
appearance of feathered wings during the evolution of birds? a. paedomorphosis b. gradualism c. macroevolution d. allopolyploidy e. microevolution
Bovine mastitis is caused by:
A. Streptococcus agalactiae B. Streptococcus anginosus C. Streptococcus bovis D. Streptococcus mutans E. Streptococcus equi
When an antibody binds to a toxin, the resulting action is referred to as
A) agglutination. B) opsonization. C) ADCC. D) apoptosis. E) neutralization.