What is the most diverse bacterial lineage?
a. Proteobacteria
b. Chlamydias
c. Cyanobacteria
d. Gram-positive bacteria
e. Spirochetes
Answer: a. Proteobacteria
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The aminoglycosides and tetracycline specifically target the ________ interfering with ________.
A. cell membrane enzymes; transpeptidation step of peptidoglycan synthesis B. tRNAs; protein synthesis C. topoisomerases; DNA replication D. 30s ribosomal subunit; protein synthesis
The area beyond the neritic zone is called
a. abyssal plain. b. ocean basin. c. trench. d. continental margin. e. the hadal zone.
Which of the following is a hemorrhagic fever?
A. Cat-scratch fever B. Chikungunya C. Q fever D. Trench fever E. Rocky Mountain spotted fever
Which type of white blood cell is the most common/abundant in normal blood?
a. eosinophil?<2-4% b. monocyte?3-8% c. neutrophil?60-70% d. lymphocyte?20-25%