Of these major ions found in the body, which one carries a negative charge?
A. Chloride
B. Sodium
C. Potassium
D. Hydrogen
E. Calcium
A
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The term conformation refers to:
A. the three-dimensional shape of a molecule, such as a protein. B. the ability of DNA to copy itself. C. the energy held in the bonds of an organic molecule, such as a protein. D. the amino acid sequence (primary structure) of a protein.
A motor unit within the powerful quadriceps muscle would
A. contain several motor neurons. B. be much like those in the eye muscles. C. generally contain less than ten fibers. D. generally contain several hundred fibers.
What chemical is released from aggregated platelets and stimulates the platelets to produce thromboxane A2?
A) ADP B) thromboxane A2 C) arachidonic acid D) prostacyclin E) protein C
When stretch receptors in the cervix are stimulated by the continually increasing pressure of the fetus, afferent neurons send impulses to the maternal hypothalamus resulting in
A. increased fetal CRH production. B. increased estrogen production. C. decreased oxytocin production. D. increased growth in the size of the placenta. E. increased oxytocin production.