The role of the Na/K pump in action potential is to:
a. allow movement of sodium into the cell.
b. allow movement of potassium out of the cell.
c. allow movement of potassium into and sodium out of the cell.
d. allow movement of both ions into the cell.
e. allow movement of both ions out of the cell.
C
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Polyphagous parasites feed on
A. any plant. B. one host. C. many different hosts. D. ectoparasites. E. None of the answers is correct.
Which type of cytoskeletal fiber is important in the function of nuclear lamina?
A. microfilaments B. intermediate filaments C. microtubules D. fibronectin
The term sterile means free of all life-forms.
Answer the following statement true (T) or false (F)
Temporal and behavioral isolation are examples of premating isolating mechanisms. Mechanical isolation, gametic isolation, and hybrid inviability are examples of postmating isolating mechanisms. Premating isolating mechanisms are considered much more
important in keeping closely related species genetically separate than are postmating isolating mechanisms. Do you agree? Why or why not? What will be an ideal response?