External fertilization is common in most _____
a. insects
b. amniotes
c. lizards
d. bony fish
e. hydra
ANSWER: d
Biology & Microbiology
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Cytotoxic T lymphocytes are distinguished from other lymphocytes by the presence of ________.
A. CD4 B. CD8 C. CD19 D. All of the choices are correct.
Biology & Microbiology
Antimicrobials that are macrolides
A. include azithromycin, clarithromcyin, and erythromycin. B. disrupt cell membrane function. C. are very narrow-spectrum drugs. D. include tetracyclines. E. are hepatotoxic.
Biology & Microbiology
Proteins are polymers of how many different amino acids?
a. 16 b. 20 c. 24 d. 64
Biology & Microbiology
Immunization for ________ may reduce the incidence of otitis media and sinusitis
A) Mycoplasma pneumoniae B) Mycobacterium tuberculosis C) Propionibacterium acnes D) Corynebacterium diphtheriae E) Streptococcus pneumoniae
Biology & Microbiology