Which of the following characteristics apply to fungi?
a. heterotroph only
b. heterotroph, producer
c. heterotroph, multicellular, cell wall
d. heterotroph, producer, multicellular, cell wall
C
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As a result of _____, an old animal usually has more pollutants in its body than a young one
a. bioaccumulation b. biological magnification
Evidence for the evolution of antibiotic resistance in bacteria has been evaluated ________
A) in populations of bacteria within individual patients B) in studies comparing newly diagnosed patients v. patients who have relapsed after antibiotic treatment C) in studies comparing the fraction of patients with resistant bacteria and society-wide use of antibiotics D) in all of the above examples E) in no empirical studies; there is no evidence that antibiotics act as a selective agent
Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells?
A) desmosomes B) gap junctions C) extracellular matrix D) tight junctions
The excretory structures of terrestrial arthropods are slender projections from the digestive tract that are attached at the junction of the midgut and hindgut. These are called
A. flame cells. B. Malpighian tubules. C. ocelli. D. kidneys and bladders. E. nephridia.