The supercoils in the loops of the nucleoid can be relaxed by introducing nicks

A. true
B. false


A

Biology & Microbiology

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True or False: Some protozoa sense their environment and move either toward a favorable or away from an unfavorable environment using random movement

A. true B. false

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The pulmonary artery carries blood away from the ____

a. aorta b. right atrium c. right ventricle d. left atrium e. left ventricle

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In the above diagram, the _____ is/are labeled with the letter "E"

a. esophagus b. larynx c. trachea d. epiglottis e. bronchi

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Which group of organisms has the greatest percentage of species in danger of extinction, according to the International Union for Conservation of Nature (IUCN)?

A) plants B) mammals C) birds D) reptiles

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