1
BRS Exam 1 Questions with 100%
Correct Answers | for Specific Exam
Mail
which of the following characteristics is shared by simple
and facilitated diffusion of glucose?
Ans: A. occurs down an electrochemical gradient
during the upstroke of the action potential ...
Ans: D. there is net inward current and the cell interior
becomes less negative
Solution A and B are separated by a semipermeable
membrane that is permeable to K+, but not to Cl-.
Solution A is 100 mM KCl, and solution B is 1 mM KCl. which
of the following statements about solution A and solution
B is true?
Ans: D. K+ will diffuse from solution A to solution B until a
membrane potential develops with solution A negative
with respect to solution B
:
vPretest - Stuvia US
, 2
the correct temporal sequence for events at the
neuromuscular junction is
Ans: B. Uptake of Ca2+ into the presynaptic terminal;
release of ACh; depolarization of the muscle end plate
which characteristic or component is shared by skeletal
muscle and smooth muscle
Ans: C. elevation of intracellular [Ca2+] for excitation-
contraction coupling
repeated stimulation of a skeletal muscle fiber causes a
sustained contraction (tetanus). accumulation of which
solute in intracellular fluid is responsible for the tetanus?
Ans: E. Ca2+
solutions A and B are separated by a membrane that is
permeable to Ca2+ and impermeable to Cl-. Solution A
contains 10 mM CaCl2. Assuming that 2.3 RT/F = 60 mV,
Ca2+ will be at electrochemical equilibrium when
Ans: D. Solution A is -30 mV
:
vPretest - Stuvia US
BRS Exam 1 Questions with 100%
Correct Answers | for Specific Exam
which of the following characteristics is shared by simple
and facilitated diffusion of glucose?
Ans: A. occurs down an electrochemical gradient
during the upstroke of the action potential ...
Ans: D. there is net inward current and the cell interior
becomes less negative
Solution A and B are separated by a semipermeable
membrane that is permeable to K+, but not to Cl-.
Solution A is 100 mM KCl, and solution B is 1 mM KCl. which
of the following statements about solution A and solution
B is true?
Ans: D. K+ will diffuse from solution A to solution B until a
membrane potential develops with solution A negative
with respect to solution B
:
vPretest - Stuvia US
, 2
the correct temporal sequence for events at the
neuromuscular junction is
Ans: B. Uptake of Ca2+ into the presynaptic terminal;
release of ACh; depolarization of the muscle end plate
which characteristic or component is shared by skeletal
muscle and smooth muscle
Ans: C. elevation of intracellular [Ca2+] for excitation-
contraction coupling
repeated stimulation of a skeletal muscle fiber causes a
sustained contraction (tetanus). accumulation of which
solute in intracellular fluid is responsible for the tetanus?
Ans: E. Ca2+
solutions A and B are separated by a membrane that is
permeable to Ca2+ and impermeable to Cl-. Solution A
contains 10 mM CaCl2. Assuming that 2.3 RT/F = 60 mV,
Ca2+ will be at electrochemical equilibrium when
Ans: D. Solution A is -30 mV
:
vPretest - Stuvia US
