The medically useful compounds some actinomycetes produce when forming aerial mycelia are called ________.
A. secondary metabolites
B. primary metabolites
C. inhibitory metabolites
D. antimetabolites
Answer: A
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An evolutionary advantage of the endoskeleton is that it (choose all correct answer options):
A. allows growth of fairly large organisms. B. protects vital internal organs. C. provides a structure on which muscles can pull for an organism to move. D. makes the process of reproduction more efficient.
Choose the property that is not common to all living things.
A. Homeostasis B. Thought C. Cellular organization D. Metabolism
Which results from stimulation by the sympathetic nervous system?
A) release of glucose from the liver B) decreased heart rate C) stimulation of the digestive organs D) constriction of the bronchi
The evolutionary link between unicellular and multicellular life was probably __________.
A. development of a specialized feeding mechanism B. development of a specialized method of waste disposal C. development of colonial forms where unicellular protists stuck together D. development of a specialized method of gas exchange