Define virus - Virus is a tiny, nonliving particle that enters and then reproduces inside a living cell., What are the characteristics of a virus? - They are nonliving, have a protein coat that protects an inner core of genetic material, and cannot reproduce on their own., True or False: Virus are cells that use their own energy to grow or to respond to their surroundings. - False! They don't use their own energy!, When can a virus multiply? - When they're inside a living cell or a host., A virus acts like a _____, an organism that lives on or in a host and causes it harm. - Parasite, ______________ is a virus that infects bacteria. In fact, its name means "bacteria eater". - Bacteriophage, True or False: Viruses are bigger than cells and can easily be seen with a microscope used in schools. - False! They are microscopic and smaller than cells., True or False: Scientists do not use the two-part scientific naming system to identify viruses. - True!, What are viruses name after? - The disease they cause or the area where they were discovered., What are the two basic parts viruses contain? - An inner core containing genetic material and a protein coat the protects the virus., What does a virus's genetic material contain? - It contains the instructions for making new viruses., The shape of the surface proteins allow a virus to... - attach only to certain cells in the host., True or False: Virus's proteins fit only into specific "locks," or proteins, on the surface of a host's cells. - True!, True or False: Though viruses can cause disease, they can also be used to treat and prevent illnesses. - True!, Explain what occurs in gene therapy. - Scientists take advantage of a virus's ability to enter a host cell. They use the virus as a "messenger service" to deliver genetic material to cells that need it., What do people with cystic fibrosis lack? - They lack the genetic material to keep their lungs functioning properly., Define vaccine. What may it be made from? - A vaccine is a substance introduced in the body to help produce chemicals that destroy specific viruses. They may be made from weakened or dead viruses., Dengue Fever is caused by what bug? - Mosquitoes, What temperatures could the mosquitoes not spread the virus? - Temperatures below 16 degrees celsius. ,

Chapter 7.1 / Viruses

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