Upper limb bones include the
A) clavicle, scapula, and humerus.
B) humerus, ulna, and radius.
C) scapula and humerus.
D) humerus, tibia, and fibula.
E) clavicle and humerus.
B) humerus, ulna, and radius.
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The most common means by which cells communicate with one another is indirectly through signal molecules
a. True b. False Indicate whether the statement is true or false
Which of the following is produced when electrons are accepted by oxygen during cellular respiration?
a) Anions b) Cations c) Metabolic water d) Lipids e) Carbohydrates
What is/are the function(s) of the gap junctions found between cardiac muscle cells?
A. They provide routes for electrical impulses to be passed from one cell to another. B. They prevent adjacent cells from coming apart. C. They initiate the heart beats. D. They stop electrical impulses from being passed from cell to cell. E. They are routes of delivery for oxygen and nutrients to the cardiac muscle cells.
Two chambers are separated by a cation-permeable membrane. The first chamber contains 10 mM NaCl and 1 mM KCl, and the second chamber contains 10 mM KCl and 1 mM NaCl. At equilibrium, the membrane potential (with chamber 1 relative to chamber 2) is
a. greater than 0 mV. b. equal to 0 mV. c. less than 0 mV. d. unable to be determined without knowing the temperature.