What would you predict would happen in an area of the body where blood was relatively acidic (low
pH)?
a. O2 would bind more readily to hemoglobin.
b. CO2 would bind more readily to hemoglobin.
c. O2 would release from hemoglobin.
d. CO2 would release from hemoglobin.
e. binding of O2 by hemoglobin would cease.
C
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Which of the following is nota function of EF-G in bacterial translation?
A. the hydrolysis of GTP B. the mediation of elongation C. the separation of the ribosome from the mRNA at termination D. the hydrolysis of the terminal peptidyl-tRNA bond
In a muscle contraction, which element is fixed
in place?
a. the muscle fiber b. the myofilament c. the sarcomere d. the actin filament e. the myosin filament
In a muscle contraction, what specifically is the
role of calcium?
a. it causes the hydrolysis of ATP b. it connects actin with myosin to form a cross-bridge c. it causes the uncovering of the myosin binding site on actin d. it catalyzes the formation of ATP from ADP and Pi e. it causes the release of Pi from the myosin head
__________ is a concentration of nerves and sensory
structures at the head end. Fill in the blank(s) with the appropriate word(s).