Ctenophores feed on:
a. phytoplankton.
b. benthic algae.
c. planktonic animals.
d. detritus.
e. DOM.
C
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Which of the following is a type of epithelial
tissue that is one layer thick?
a. stratified b. dense connective c. loose connective d. simple e. more than one of these
Biuret reagent will indicate the presence of
a. peptide bonds. b. proteins. c. amino acids units linked together. d. all of the above.
What is the function of the epiglottis?
A. To line the interior of the thoracic cavity. B. To increase the buffering capacity of blood. C. To separate the thoracic cavity from the abdominal cavity. D. To cover the trachea when food is being swallowed. E. To bind to carbon dioxide in red blood cells.
Which class of drugs would be effective against HIV but not against most other pathogenic viruses?
A. Translation inhibitors that stop assembly of viral proteins B. Receptor antagonists that block viral entry C. Non-nucleoside reverse transcriptase inhibitors that block reverse transcription D. Nucleotide analogs that halt replication