Those that cannot survive in oxygen are called obligate anaerobes. Process in which a host cell bursts after being invaded by a virus J. How could you confirm that the organism was a prokaryote? Many bacterial pathogens can be controlled by washing, using disinfectants, preparing and storing food safely, or sterilizing exposed items. Viruses that infect bacteria are called bacteriophages. Energy Capture by Prokaryotes Group Description Organism that carries out photosynthesis in a manner similar to that of plants Chemoautotroph Organism that takes in organic molecules and then breaks them down Photoheterotroph Name Class Date

RNA viruses have shown an ability to evade antiviral drugs. A n noninfectious disease is an unknown disease that appears in a population for the first time. What would happen to a virus that never came in contact with a living cell? Another is virus and bacteria evolution. Unicellular organisms that lack a nucleus are called 2. Bacterial taxonomy wikipedia , lookup.

Viruses produce other serious diseases in other animals and in plants. Antiviral drug wikipedialookup. How are they different? Most prokaryotes are heterotrophs.

homework 20.1 viruses

Name Class Date They do so in one of two general ways: Viruses must infect a living cell in order to reproduce. A person has a low helper-T cell count. Apply the Big idea The two different domains of prokaryotes are 3.

Moody, Alyssa / Chapter 20 – Viruses and Prokaryotes

In the case of bacteriophage T4, viral DNA directs the synthesis of new viruses using materials in the cell. The virus that causes the disease AIDS is a retrovirus. Thank you for your participation!

homework 20.1 viruses

RNA viruses have shown an ability to evade antiviral drugs. Spirilla are spiral or corkscrew-shaped. Scrapie is most likely caused by homewwork known as viroids. A n noninfectious disease is an unknown disease that appears in a population for the first time. Lesson Summary Classifying Prokaryotes The smallest and most common microorganisms are prokaryotes, which are unicellular organisms that lack a nucleus.



In a lytic infection, a virus enters a cell, makes copies of itself, and causes the cell to burst, releasing new virus particles that can attack other cells. Oncolytic virus wikipedialookup. The widespread use of vaccines has led to the emergence of resistant strains of bacteria. The Importance of Prokaryotes They damage the cells and tissues of the infected organism directly by breaking down the cells for host.

Match the bacterial control method with an example of the method Bacterial Control Method Example Viral diseases in humans include the common cold, influenza, AIDS, chicken pox, and measles.

Prokaryotes are classified either in domain Bacteria or domain Archaea. How are the causes of tuberculosis and diphtheria similar? Match the term with its definition Term Definition 2.

homework 20.1 viruses

Many prokaryotes can form endospores when conditions are unfavorable in order to protect their DNA. Vruses are more closely related to than 5. Some bacteria have a second Date.

How do decomposers help the ecosystem recycle nutrients when a tree dies? In a lysogenic infection, how can one virus infect many cells? How do you suppose this is possible, when viruses are not alive? What viral disease does he or she most likely have? What are some human diseases caused by viruses? How do antiviral medications hokework