Evolutionary studies that use comparative morphology to analyze the structures of related organisms are primarily
based on comparisons of homologous traits.
a. True
b. False
ANSWER: True
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The P-site
A. is found on the polymerase enzyme. B. is an allosteric site. C. is a promoter site. D. is the peptidyl site on the ribosome. E. is an allosteric site AND is a promoter site.
The discharge of high levels of microbial nutrients into marine environments has
A. had negative impacts on shellfish and other bottom-dwelling marine animals. B. resulted in the production of large hypoxic or anoxic regions. C. resulted in algal blooms and red tides that have killed marine mammals. D. All of the choices are correct.
What is the combined function of the malleus, incus, and stapes?
a. convert the mechanical vibration of the tympanic membrane into a pressure wave in the cochlear duct b. amplify the vibrations of the ear drum c. equalize the pressure on both sides of the tympanic membrane d. convert the oval window's vibrations into vibrations of the tympanic membrane e. dampen the vibrations of the tympanic membrane
You discover a green, filamentous multicellular eukaryote growing at the edge of a pond. How could you determine if the organism is a green alga or a plant?
a. Determine if the organism protects and nourishes its embryos. b. Determine if the organism protects its zygotes. c. Examine the cell walls to see if they are composed of cellulose. d. See if the organism stores its excess carbohydrates in the form of starch. e. Test for the presence of chlorophylls