If an environment is acidic, is its pH lower than, equal to, or greater than 7?
A. The pH is greater than 7.
B. The pH is lower than 7.
C. The pH is equal to 7.
D. The pH is lower than or equal to 7.
B. The pH is lower than 7.
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The proton motive force is most often generated by splitting of H2
Indicate whether the statement is true or false.
DNA transposable elements (DNA TEs) are:
A. a class of transposable elements that replicate and transpose via DNA replication and repair. B. a class of transposable elements that uses RNA as an intermediate. C. a class of transposable elements that uses DNA as an intermediate. D. a class of transposable elements that uses protein as an intermediate. E. a class of transposable elements that uses ribosomes as an intermediate.
What is the oldest eukaryotic fossil that can be clearly linked to a living group of eukaryotes?
A. thermophillic archaea B. brown algae C. red algae D. sulfur loving bacteria
Which antibiotic is overcome by beta-lactamases?
a. Tetracycline b. Sulfonamide c. Penicillin d. Tetracycline, Penicillin, and Sulfonamide are all affected by beta-lactamase.