Which of the following is the best definition of antagonism?
A. competition for limited resources
B. cooperation in utilization of resources
C. sharing the same environment without harming each other
D. production of products that interfere with the growth of others
E. competition and production of products that interfere with growth
Answer: D
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Certain medications can have the effect of decreasing potassium levels in the body. Which symptom would be consistent with a loss of potassium?
A. fatigue B. muscle weakness C. irregular heartbeat D. All of the answer options are correct.
Pseudocoel means “false body cavity.” Why is this term applied to the body cavity of roundworms?
What will be an ideal response?
Flatworms are
a. acoelomate b. coelomate c. pseudocoelomate d. parazoans e. incredible athletes
Among these choices, the biggest set that includes only those "cells" that lack nuclei is
A) platelets. B) platelets and erythrocytes. C) platelets, erythrocytes, and basophils. D) platelets, erythrocytes, basophils, and neutrophils. E) platelets, erythrocytes, basophils, neutrophils, and monocytes.