Efferent lymphatics unite to form ____ lymphatic trunks
a. four
b. six
c. two
d. five
b
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Which is the mechanism of enzyme functioning?
A) Enzymes raise the activation energy of a reaction. B) Enzymes remove hydrogen ions. C) Enzymes lower the activation energy of a reaction. D) Enzymes replace hydrogen ions. E) Enzymes promote complementary base-pairing.
Albinism in which there is an absence of melanin pigment would affect the individual's ability to
A. discern colors. B. have high levels of visual acuity and prevent scattering of light inside the eye. C. protect the optic nerves from damage. D. remove wastes from the eye. E. see at all, as it always results in blindness.
The secretion of testosterone is controlled by ________.
A. LH B. FSH C. GH D. action potentials from the sympathetic part of the autonomic division
Which of the following is the correct equation for calculating cardiac output?
A. CO = HR+ SV B. CO = HR - SV C. CO = HR/SV D. CO = HR x SV