Red mites (chiggers) spread ________ among both humans and rodents.

A. Borrelia recurrentis
B. Orientia tsutsugamushi
C. Rickettsia rickettsii
D. Ehrlichia chaffeensis
E. Rickettsia typhi


Answer: B

Biology & Microbiology

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Genes that are always "turned on" in a cell are referred to as

A) regulated genes. B) mutations. C) inducible. D) constitutive. E) catabolic.

Biology & Microbiology

In 1938, scientists found a population of coelacanths in the Indian Ocean. This fish species is considered a "living fossil" and appears not to have changed morphologically for 80 million years. This discovery supports the ________ model of evolution.

A. punctuated equilibrium B. common descent C. gradualism D. natural selection E. adaptation

Biology & Microbiology

Botulism will always be a threat for people who

A. are meat eaters. B. are vegetarians. C. have a weakened immune system. D. consume home-preserved foods. E. eat a lot in restaurants.

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The goal of ________ is to identify each protein present in a given microenvironment at the time of sampling.

A. metagenomics B. both metagenomics and metaproteomics C. metaproteomics D. None of the choices are correct.

Biology & Microbiology