It is possible to make a form of nitrogen that is useable by plants; however, the major drawback to this process is:
A. time involved.
B. getting enough nitrogen.
C. cost of converting nitrogen to a useable form.
D. temperatures must be extremely high.
E. it is difficult to contain the end product.
C. cost of converting nitrogen to a useable form.
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Antimicrobial therapy for H. pylori infection consists of:
a. penicillin, gentamycin, and imipenem. b. clindamycin, ceftriazone, and carbapenem. c. A proton pump inhibitor, clarithromycin, and metronidazole. d. azithromycin alone.
Which molecules most easily diffuse across a cell membrane?
a. ionic b. large, polar c. large, hydrophilic d. small, hydrophobic e. large, hydrophobic
A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely
A) fermenting the glucose. B) oxidizing the glucose. C) using the peptides. D) not growing.
What is the term given to a group of individuals belonging to the same species that live in a defined geographic area that actually or potentially interbreed?
A) population B) consanguinity C) cytogenetics D) genetics E) hybrid vigor