Where do the light-dependent reactions take place?
a. stroma
b. intermembrane space
c. thylakoid membrane
d. thylakoid lumen
c. thylakoid membrane
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Most mobile DNA consists of
A) transposable elements. B) introns. C) linear chromosomes. D) plasmids.
Competitive exclusion is based on the idea that
a. one species will hold some sort of advantage over the other one. b. no two species can completely occupy the same niche. c. the more two species overlap in their capacity to obtain and use resources the less likely they are to coexist. d. all of these are true. e. none of these are true
Which of the following is not true regarding healthcare-associated infections?
A. These infections often involve the patient's urinary tract and surgical incisions. B. Escherichia coli and staphylococci are common infectious agents. C. Medical and surgical asepsis help lower their occurrence. D. These infections are only transmitted by medical personnel. E. The patient's resident biota can be the infectious agent.
Transgenic viruses are
a. highly deadly viruses that cause diseases. b. mutated viruses that evade antibodies. c. harmless genetically engineered viruses. d. variations on original virus forms. e. viruses that do not impart immunity.