Which of the following antibiotics is NOT bactericidal?
A) aminoglycosides
B) cephalosporins
C) polyenes
D) rifampins
E) penicillin
C
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All vertebrates have ________.
A. a skull and a backbone B. four limbs and a backbone C. hair and a backbone D. scales and a backbone
The prevention of genetic exchange between two species because they reproduce at different times of
the day or year is called:a. hybrid sterility. b. genetic isolation. c. sexual isolation. d. mechanical isolation. e. temporal isolation
What do aquatic groups ranging from foraminifera, to corals, to bivalve mollusks require in order to build their hard parts?
A. Oxalic acid B. Potassium carbonate C. Protein D. Calcium carbonate E. Iron oxide
When considering the following figure, what is the range of genome size for protozoa? What does this tell us concerning the relationship between genome size and organismal complexity?
What will be an ideal response?