Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 17, Problem 8TYK

An infectious material is isolated from a nerve cell. It contains protein with amino acid sequences identical to the host protein but no nucleic acids. It belongs to the group:

a. prions.

b. Archaea.

c. toxin producers.

d. viroids.

e. spore formers.

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The term active transmission refers to: a. A person who catches a disease from a bug bite  b. A person who catches a disease from contaminated food c. A person who catches a disease from a contaminated object d. A person who coughs in public and passes the disease to those around them
The first step for directly linking a microbe to a specific disease according to Koch's postulates is to A.isolate microbes from the blood of healthy animals. B. culture the blood or other body fluid from a diseased animal using nutrient medium.   C. inject a sample of blood or other body fluid from a diseased animal into a healthy animal. D. obtain a sample of blood or other body fluid from a diseased animal.
Which of the following statements correctly describes exotoxins and endotoxins produced by various bacteria? A. endotoxins are secreted into the environment while the bacteria are still alive B. exotoxins are secreted into the environment while the bacteria are still alive C. exotoxins are only released into the environment when the bacteria die and their cell walls break down D. exotoxins are components of the outer membrane of the bacteria that produce them
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What Is A Virus ? ; Author: Peekaboo Kidz;https://www.youtube.com/watch?v=YS7vsBgWszI;License: Standard YouTube License, CC-BY