HOMEWORK 20.1 VIRUSES

Bacterial pathogens can produce many diseases that affect humans and other animals. A virus is a particle made of nucleic acid, protein, and, in some cases, lipids. The two different domains of prokaryotes are 3. Cell theory wikipedia , lookup. Neurodegeneration wikipedia , lookup. Some are decomposers that break down dead matter. They can be surrounded by a cell wall, which contains peptidoglycan.

Describe how prokaryotes vary in structure and function. Inside the cell wall is a cell membrane surrounding the cytoplasm. How are they different? The picture shows three different bacteria shapes. When a bacterial infection does occur, antibiotics can be used to fight the disease.

Process in which a bacterium replicates its DNA and divides in half Complete each statement by writing the correct word or words. Autotrophs may be photoautotroph, or chemoautotrophs.

Moody, Alyssa / Chapter 20 – Viruses and Prokaryotes

Match the term with its definition Term Definition 2. Marine microorganism wikipedialookup. They ivruses living cells and, once inside, use the machinery of the infected cell to produce more viruses.

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Another is virus and bacteria evolution. A person has a low helper-T cell count. The Importance of Prokaryotes Pathogens are able to evolve over time.

In the case of bacteriophage T4, viral DNA directs the synthesis of new viruses using materials in the cell. Lesson Summary Classifying Prokaryotes The smallest and most hpmework microorganisms are prokaryotes, which are unicellular organisms that lack a nucleus.

CHEAT SHEET

Germ theory of disease wikipedialookup. Viral Diseases Viruses produce disease by directly destroying living cells or by affecting cellular processes in ways that disrupt homeostasis.

What are spherical bacteria called?

homework 20.1 viruses

What is a bacteriophage? Unicellular organisms that lack a nucleus homewrk called 2. Why is the process of nitrogen fixation important? A person has blister-like lesions on the skin. Using bleach to clean a countertop The Discovery of Viruses 1. Immunity is the body’s natural way of killing pathogens.

Using boiling water to clean dishes Those that cannot survive in oxygen are called obligate anaerobes. A cell wall made of.

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homework 20.1 viruses

Energy Ohmework 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 Bacterial taxonomy wikipedialookup.

Explain the role of bacteria in the living world.

homework 20.1 viruses

Virus that infects bacteria L. Explain how viruses cause infection.

Prokaryotes that require a constant supply of oxygen to live are called obligate aerobes. A vaccine can prompt the body to produce immunity to the disease. Biology wikipedialookup. How do decomposers help the ecosystem recycle nutrients when a tree dies?

How are they different? What viral disease does he or she most likely have?