What is the name of a form of extrachromosomal inheritance that is due to transmission of symbiotic or parasitic microorganisms?

A) uniparental genome transfer
B) infectious heredity
C) pathogenic paternal transfer
D) organellar inheritance
E) microbial genomic transfer


Answer: B

Biology & Microbiology

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The spread of an action potential through heart tissue is made possible by

A. gap junctions. B. tight junctions. C. a network of neurons in the heart. D. myogenic junctions. E. synaptic clefts.

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Ions in body fluids of a human are referred to as

A) electrolytes. B) osmolytes. C) isotopes. D) atoms.

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The vector that transfers the malarial parasite to humans is the

A. fly. B. amoeba. C. meat. D. mosquito.

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Which of the following statements regarding a radiologic dispersal device (RDD) is correct?

A) The destructive ability of an RDD, also known as a dirty bomb, is significant because it contains a chemical agent. B) An RDD is any container designed to disperse radioactive material and requires the use of an explosive device. C) An RDD is an effective weapon of mass destruction because damage is enhanced by the radioactive material contained within it. D) Once radioactive material is placed into the RDD, it would injure or kill 10 times as many people as the explosive alone.

Biology & Microbiology