A rash characterized by macules which swell, fill with fluid and then pus, then rupture and become crusty lesions, is characteristic of
A) human herpes virus 2 primary infection.
B) poxvirus infection.
C) chickenpox virus reactivation.
D) roseola virus.
E) papillomavirus infection.
B) poxvirus infection.
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Typically, the first amino acid incorporated in bacterial protein synthesis is ________
Fill in the blank(s) with the appropriate word(s).
The pleural cavity is located:a
between the pleural membranes. b. inside the innermost pleural membrane. c. outside the outermost pleural membrane. d. between the right lung and the left lung. e. within the bronchioles.
Prokaryotes and eukaryotes are primarily distinguished by the absence or presence of internal membrane-enclosed organelles. Are prokaryotic cells at an evolutionary disadvantage because they lack organelles?
a. Yes; without organelles, prokaryotic cells cannot photosynthesize or respire. b. Yes; without organelles, prokaryotes are unable to bring together the reactants needed for biological reactions. c. No; although prokaryotic cells are comparatively less efficient than eukaryotic cells, they are still able to carry out the processes necessary for survival and reproduction. d. No; eukaryotic organelles are expelled each time the cell divides.
Which of the following would affect the size of a zone of inhibition around an antiseptic or disinfectant disk? Select all that apply
a. The susceptibility of the microorganism to the chemical b. The concentration of chemical in the disk c. The cellular target of the chemical d. How quickly the chemical diffuses through the agar e. The depth of the agar