The building of complex molecules from simpler ones is described as
A. reversible.
B. exergonic.
C. anabolism.
D. catabolism.
E. irreversible.
Answer: C
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After a plan for movement has been developed, it leaves the ________ and connects with neurons in the thalamus.
A. nuclei B. limbic system C. motor cortex D. spinal tract
When does the heart begin to beat?
A. By week 3 in the embryo B. By week 5 in the embryo C. Early in fetal development D. By the fifth month of development E. At birth
In twitch summation,
a. the muscle fiber is stimulated again before the action potential has returned to resting potential. b. the muscle fiber is stimulated again before the filaments have completely returned to their resting position. c. stronger muscle contractions occur but stronger action potentials do not occur. d. both (b) and (c) above. e. all of these answers.
An individual is considered tongue-tied if the ________ is too short.
A. buccal papilla B. uvula C. hyoid D. cecum E. lingual frenulum