Iteroparity is common in which of the following organisms?
a. perennial herbaceous plants
b. most insects
c. agaves
d. most invertebrates
e. Pacific salmon
a
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Which is the most frequently chosen prokaryotic host for use in cloning techniques?
A. Bacillus subtilis B. Escherichia coli C. Saccharomyces cerevisiae D. Staphylococcus aureus
Alders are trees with symbiotic nitrogen fixing bacteria in their roots. This enables alders to be a key part of _________ in recently glaciated areas in Alaska.
A. species extinction B. emigration C. primary succession D. inhibition E. secondary succession
Decomposers recycle materials at ____ trophic
level(s). a. the first b. the second c. the third d. the fourth e. any of these
For persons with a certain types of heart defects, including artificial valves or a history of infective endocarditis, antibiotics are often prescribed prior to dental procedures to prevent possible infection. This strategy would be best described as
A) Combined antimicrobic therapy B) Synthetic therapy C) Synergy D) Prophylaxis