Which of the following are phagocytic cells found in the epidermis?
A) neutrophils
B) natural killer lymphocytes
C) microglia
D) dendritic cells
E) wandering macrophages
D
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If a human red blood cell takes the shortest possible route from the right ventricle to the right atrium, then it must travel through this number of capillary beds.
A. one B. two C. three D. four E. five
The exchange of gases with the respiratory
medium by animals is called breathing, whether the medium is air or water.
1.True 2.FalseWhich of the following lists the levels of biological organization in order from simplest to most complex?
a. cell, cardiac muscle, heart, cardiovascular system, human b. cardiac muscle, cell, human, heart, cardiovascular system c. heart, human, cell, cardiac muscle, cardiovascular system d. cell, heart, human, cardiovascular system, cardiac muscle e. human, heart, cardiovascular system, cardiac muscle, cell
The figure above demonstrates the relationship between:
a. small population size and genetic drift. b. population size and the effect of selection. c. population size and the effect of mutation. d. population size and effective population size. e. population size and the effect of migration.