What field of biology compares the development of organisms in order to better understand mechanisms of evolutionary change?
A. Pattern formation.
B. Punctuated equilibrium.
C. Cell biology.
D. Evolutionary developmental biology.
E. Endocrine biology.
D. Evolutionary developmental biology.
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The high variability of the types of G protein-coupled receptors allows for:
A. different types of cells to respond to different types of signals. B. different types of signal-transduction pathways to respond to signals. C. a rapid response to cell signals. D. a sensitive response to cell signals. E. All of these choices are correct.
The parasite that is responsible for causing malaria is called
A. Paramecium. B. Chlamydomonas. C. Plasmodium. D. Entamoeba. E. Giardia.
A hectare of wheat fixes 32,000 kg of carbon per year through photosynthesis and uses 7,000 kg of carbon per year for cellular respiration. The net primary productivity of the wheat field is therefore _____ kg of carbon/hectare/year.
Fill in the blank(s) with the appropriate word(s).
Learned behavior is recognizable by the __________
the animal makes in its responses. a. fixed action patterns b. modifications c. stereotyping d. repetitions e. false starts