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Decker Bio B
Viruses and Prokaryotes Chapter 18.1 and 18.2
| Question | Answer |
|---|---|
| Prokayotes belonging to one of three domains of life | Archaea |
| nonpolar molecules made of carbon, hydrogen and oxygen | Lipid |
| condition of constant internal conditions | homeostasis |
| A doctor may prescribe this if you have a bacterial infection. | antibiotic |
| You may receive this in the form of a shot to prevent getting the flu | vaccine |
| Any poison produced by an organism, including the oil produced by poison ivy, is this. | toxin |
| Any living organism or particle that can cause an infectious disease is called a | pathogen |
| This is a single celled organism. They are living things-they contain DNA, use nutients and energy, they grow and reproduce and respond to their environment. | Bacteria |
| This is an infectious particle made only of a piece of DNA or RNA surrounded by a protein coat. They cannot reproduce on their own. They need living cells to help them reproduce. | Virus |
| This is a piece of single-stranded RNA without a protein coat. They cause diseases in plants, and are passed through seeds and pollen. They cannot reproduce without the help of living cells. Almost always use plants as a host. | Viroids |
| An infectious particle made only of proteins. They are always deadly because the body has no immune response against a protein. They can cause other proteins to fold incorrectly. | Prion |
| Viruses are made up of two main parts: a piece of genetic material, and a protein covering, or coat called a | capsid |
| a group of viruses that infect bacteria. | Bacteriophages |
| In which cycle of infection are new viral particles released, lytic or lysogenic? | Lytic infections. |
| Viral DNA combined with the host cell's DNA is called | prophage |
| A virus is made of two main parts, genetic material and a | capsule |
| In this infection the viral DNA becomes part of the host cell's DNA and the host cell is not destroyed. | lysogenic infection |
| This this infection the host cell bursts, releasing new viral offspring into the host's system. | lytic infection. |
| What do viruses need to reproduce? | living cells |
| What are the main difference between the lytic and lysogenic cycles of infection? | Lytic cycle results in the destruction of infected cells Lysogenic cycle doesn't destroy the host cells. |
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