Facilitated diffusion differs from simple diffusion in that facilitated diffusion __________.
a. is an ion pump
b. needs ATP
c. requires a protein carrier
d. doesn't need a gradient
e. requires a protein carrier
Answer: e. requires a protein carrier
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How does the release of histamine by mast cells help the innate immune response?
A. It signals neutrophils to migrate to the site of infection. B. It makes it easier for neutrophils to move from the bloodstream to the site of infection. C. It increases the volume of blood flow in the area of the infection. D. Two answer options are correct: It makes it easier for neutrophils to move from the bloodstream to the site of infection AND increases the volume of blood flow in the area of the infection.
Which of the following is NOT related to genetic drift?
A. Founder effect. B. Bottleneck effect. C. Sexual selection. D. Both the founder effect and the bottleneck effect. E. Both sexual selection and bottleneck effect.
Exocrine glands secrete all of the following EXCEPT ____
a. mucus b. hormones c. earwax d. milk e. digestive enzymes
Interphase is ____________
Fill in the blank(s) with the appropriate word(s).