The neurotransmitter receptor research of Jean-Luc Eiselé and his coworkers shows that
a. neurotransmitters are dependent on the activity of Na+.
b. neurotransmitters are dependent on the activity of K+.
c. neurotransmitters are dependent on the activity of Cl?.
d. a receptor binding to neurotransmitters functions independently from conducting ions.
e. neurotransmitters are dependent on the activity of Ca+.
D
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Select the statements that provide direct biogeographical evidence for evolutionary theory. Check all that apply.
_____ Unrelated organisms from similar habitats exhibit similar characters. _____ Terrestrial mammals are not found naturally on any island greater than 300 miles from a mainland. _____ Organisms on islands are most similar to organisms on the nearby mainland, even when habitats on the mainland and island are quite different. _____ Invasive rats have colonized more than 80% of the world's islands.
What is the photopigment in rod cells called?
A. photopsin B. rhodopsin C. opsin D. carotene E. melanin
The control in an experiment
a. makes the experiment valid. b. is an additional replicate for statistical purposes. c. reduces the experimental errors. d. minimizes experimental inaccuracy. e. allows for comparison to the experimental group.
A reaction with a negative value of ?G is referred to as an __________ reaction
a. endergonic b. entropy c. exergonic d. enthalpy e. activation