Stromatolites are fossils of ancient, photosynthetic cyanobacteria
Indicate whether the statement is true or false.
ANSWER: True
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The center for spatial orientation and posture is the:
a. cerebrum b. pons c. cerebellum d. thalamus e. hypothalamus
Characteristics of a nerve net include ____
a. a centralized brain b. the flow of information between cells in all directions c. well-developed neurons d. paired ganglia e. unidirectional responses
Four of the five organisms listed below belong to the same monophyletic group.
a. Amoeba proteus b. euglenoids c. plasmodial slime molds d. cellular slime molds e. Entamoeba histolytica
What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human?
A. RNA—>DNA—>Protein B. DNA—>RNA—>Protein C. DNA—>Protein—>RNA D. Protein—>RNA—>DNA