A systemic, sometimes fatal, reaction with airway obstruction and circulatory collapse is ________.
A. T-cell-mediated
B. antibody-mediated
C. systemic anaphylaxis
D. delayed
E. atopic
Answer: C
Biology & Microbiology
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A point mutation is when a single nucleotide gets replaced by a different one
A. true B. false
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In gene therapy, what is transferred into an
individual’s body cells?
a. new genomes b. recombinant DNA c. GMOs d. bacterial plasmids e. DNA libraries
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An envelope
a. surrounds the nucleus. b. surrounds mitochondria. c. consists of two membranes. d. does all of the above.
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The modern-day group of vertebrates that bridges the evolutionary gap between land-dwelling and water-dwelling organisms is
A) aquatic birds. B) fish. C) amphibians. D) reptiles. E) whales and dolphins.
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