Calcidiol circulates in the blood and is converted to calcitriol in the
A. liver.
B. bone.
C. skin.
D. kidney.
Answer: D
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Which applies to synergist muscles?a: Assist the agonistb: Assist the antagonistc: May stabilize the point of origind: May contribute to tension at the insertion sitee: Most useful at the end of a movement
A. b, c, d B. a, c, d, e C. b, c, e D. a, c, d E. b, c, d, e
Sheet of nerve cells that forms a rounded ridge on the surface of the cerebral cortex:
A) fissure B) ventricle C) cerebral aqueduct D) gyrus E) sulcus
Which is not correct about fertilization?
A. It determines the sex of the organism. B. It restores the diploid number of chromosomes. C. It initiates cleavage. D. It establishes the three primary germ layers. E. It combines male and female genetic material.
Cyclin, a protein that becomes more abundant as the cell cycle proceeds,
A) delays cytokinesis. B) activates repressor genes. C) triggers DNA replication. D) damages telomeres. E) takes part in triggering mitosis.