Which of the following applies to the Kirby-Bauer test? Select all that apply. 1. This test determines if an antibacterial drug is bacteriostatic or bactericidal.

2. Bacteria that have a zone of inhibition are considered susceptible to the tested drug.

3. Bacteria that lack a zone of inhibition are resistant to the tested drug.

4. This test determines if a bacterium is resistant to a specific antibacterial drug.

5. This test reveals if a bacterium is a pathogen.

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Individuals do not compete directly for resources, but are prey for the same predator

Which direction does the energy flow in this energy pyramid ?