The ________ is the site of sperm maturation and storage.
A. epididymis
B. spermatic cord
C. ductus (vas) deferens
D. rete testis
E. seminiferous tubules
Answer: A
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The "atomic weight" of an atom reflects the average number of
A) protons. B) neutrons. C) electrons. D) protons + neutrons. E) protons + neutrons + electrons.
Which of the following types of muscle tissue is capable of undergoing the stress-relaxation response when they are stretched?
a) cardiac muscle fibers b) fast glycolytic fibers c) fast oxidative-glycolytic fibers d) slow oxidative fibers e) single-unit smooth muscle fibers
Respiratory control centers are located in the ________.
A) midbrain and medulla B) medulla and pons C) pons and midbrain D) upper spinal cord and medulla
Compare F-actin with G-actin
A) F actin is a twisted strand made up of two rows of G actin subunits where myosin heads can bind. B) G actin is a twisted strand made up of two rows of F actin subunits where myosin heads can bind. C) F actin binds myosin during muscle relaxation and G actin binds myosin during muscle contraction. D) F actin binds myosin during muscle contraction and G actin binds myosin during muscle relaxation. E) F actin is functional actin that contains myosin binding sites and G actin covers the binding sites on F actin to prevent actin-myosin interaction.