BIOD 171 MODULE 6 Questions With All Correct Answers Already Passed!!

True or False. Because the genome is contained within an enclosed space (much like the nucleus of a cell), viruses are classified as eukaryotic. - Answer-False True or False. Although viruses may contain their genome within an enclosed space (much like the nucleus of a cell), it is considered neither eukaryotic nor prokaryotic. - Answer-True Describe the two basic components of a virus. - Answer-A virus has genomic material made up of either DNA or RNA and a capsid which is a protective structure that contains genetic material True or False. You would expect to see a viral envelope on a virus infecting a bacterial cell. - Answer-False The overwhelming majority of animal viruses are enveloped whereas the majority of plant or bacteriainfecting viruses are not. The envelope surrounds the _________ of some viruses. - Answer-Capsid The ________ surrounds the capsid of some viruses. - Answer-envelope Rank the following viruses based on their size from largest to smallest: Paramyxovirus Poliovirus Smallpox virus - Answer-Smallpox, Paramyxovirus, Poliovirus Rank the following viruses based on their size from largest to smallest: Orthomyxovirus Poliovirus Variolavirus - Answer-Variolavirus OrthomyxovirusPoliovirus True or False: Highly infectious viruses undergo genome replication prior to viral attachment and entry. - Answer-False Place the following viral life cycle steps in order beginning with viral attachment and provide a description of each step. Uncoating: Release: Replication: Attachment: Entry: New infection: - Answer-3- Uncoating: the viral capsid disassembles 5-Release: New virus particles are produced and leave the cell 4-Replication: the viral genome is the 'blueprint' to make copies of itself 1-Attachment: viral receptors bind to host proteins on the surface of the cell 2-Entry: the virus fuses with the host membrane and enters the cell 6-New infection: newly produced viruses that left the host cell now go on to infect new cells. True or False: Viral replication occurs after it attaches and enters the host cell. - Answer-True A virus that infects bacteria is called a [answer1] and contains a [answer2] -sided polygon capsid. - Answer-1. Bacteriophage 2. 20 True or False. Structurally, bacteriophages are similar to viruses that infect animals. - Answer-False Identify the following components of a bacteriophage.1- [answer1] 2- [answer2] 3- [answer3] 4- [answer4] 5- [answer5] - Answer-1. capsid 2. collar 3. tail 4. base plate 5. tail fibers Describe the main differences between lytic and temperate phages. - Answer-- Lytic bacteriophages replicate within the host bacteria until it ruptures. - Temporate phages primarily exist in a non-replicating state that does not kill the host cell. Based on the following image, would you expect the viral titer to be high or low? Why? - Answer-Low, since the amount of intact bacterial cells in the media determines its turbidity, the amount of virus present in the tube has to be minimal. The amount of virus in the image is low. As the lytic cycle continues, more bacteria cells will be destroyed and the media will be cleared. Which of the following can be spread via airborne particles: Measles Mumps Rubella A and B All the above - Answer-All the above