The cellulase in this experiment came from _______.
A) an animal
B) a plant
C) fungi
D) bacteria
D) bacteria
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During moderate exercise, ________
A) blood pressure remains at pre-exercise levels B) heart rate remains the same or decreases C) heart rate and blood pressure increase D) blood pressure decreases
Spermatogenesis ends with the production of ________ spermatids.
A) 16 B) 4 C) 6 D) 8 E) 2
Which motility sweeps digestive remnants toward the colon between meals?
a. segmentation b. haustral contraction c. pacemaker potentials d. migrating motility complex e. mass movements
Stretch reflexes
A. mediate flexor activation and withdrawal from a painful stimulus. B. are initiated by stretching of extrafusal muscle fibers. C. occur only in the legs. D. are initiated by stimulation of Golgi tendon organs. E. inhibit antagonistic muscles.