The type(s) of bond produced when atoms with somewhat different electronegativities share electrons is/are
A) a nonpolar covalent bond.
B) a polar covalent bond.
C) an ionic bond.
D) a hydrogen bond.
E) both nonpolar covalent and ionic bonds.
B
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Which of the following contribute to the spread of antibiotic resistance through bacterial populations?
A. horizontal gene transfer B. conjugation C. overuse of antibiotics D. transposons E. All of these choices are correct.
Conservation biology is a ____
a. mature science b. young science c. science that addresses speciation rates d. science practiced by environmentalists e. declining science
A young woman develops a fever after a recent trip to a Caribbean island. She also experiences severe headache and pain "in the bones." After a few days, she also develops a rash. Which of the following did she most likely contract?
A) yellow fever virus B) dengue virus C) malaria D) Toxoplasma E) Chagas' disease
Recent phylogenetic analysis has provided evidence to justify classifying microsporidians as fungi.
Answer the following statement true (T) or false (F)