The "selectivity" of a particular ion channel refers to its _____
A) permitting passage by positive but not negative ions
B) permitting passage by negative but not positive ions
C) ability to change its size depending on the ion needing transport
D) binding with only one type of neurotransmitter
E) permitting passage only to a specific ion
Answer: E
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Which label designates a female reproductive structure in the accompanying figure?
a. 1 b. 2 c. 5 d. 7 e.8
What is the functional unit of the kidney?
A) renal unit B) Bowman's capsule C) nephron D) glomerulus
Which statement about human demographic trends is true?
A) As women's status and education increase, they choose to have more children. B) After 1950, mortality rates increased rapidly in most developing countries. C) A human population in which women reproduce at a later age will experience slower population growth. D) The movement from high birth rates and low death rates to low birth rates and high death rates is called the demographic transition.
The zoonosis known as RMSF is the result of infection with Rickettsia (prowazekii/rickettsii/typhi).
Fill in the blank(s) with the appropriate word(s).