Microbes known as transient microbiota are
A) microorganisms that remain with the person throughout life.
B) microorganisms that may cause a disease under certain circumstances.
C) organisms that remain in the body for a short time.
D) unsuccessful microbial invaders because of the presence of preexisting microbes.
E) sources of microbial contamination.
C
Bloom's Taxonomy: Knowledge
Section: Symbiotic Relationships Between Microbes and Their Hosts
Learning Outcome: 14.3
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A distinctive feature of eukaryotes is the organization of tightly packaged chromosomal DNA with proteins into a membrane-bound structure called a:
A. nucleolus. B. cell. C. nucleus. D. plasma membrane.
In recombinant DNA experiments, ______ is used to cut pieces of DNA, and ______ joins these segments to form recombinant DNA
A. restriction enzyme; DNA ligase B. a transposon; a restriction enzyme C. a plasmid; DNA ligase D. DNA ligase; a restriction enzyme E. DNA ligase; a plasmid
Sickle cell anemia has been traced to what type of mutation?
a. frameshift b. transposable element c. deletion d. addition e. base substitution
Which of the following is not considered to be part of an adaptive immune response?
a. phagocytic cells e. antigen receptors b. antigen-presenting cells f. complement activation c. histamines g. antibodies d. cytokines h. none of these