Chapter 003. Talaros Foundations in Microbiology Revised Test Bank Question & Answers 2023 Verified

Chapter 003. Talaros Foundations in Microbiology Revised Test Bank Question & Answers 2023 Verified Capsids is a ____ correct answers Protein coat that encloses and protects the nucleic acid All viruses have Capsids true or false? correct answers True Nucleocapsid consists of _____Together with_____ correct answers 1.) capsid 2.) nucleic acid Some viruses have an external covering called an____ correct answers Envelope Viruses that lack an envelope are____ correct answers Naked Each capsid is made of identical protein subunits called____ correct answers Capsomers In (1884) Louis Pasteur postulated that rabies was caused by a______ correct answers Virus In the (1890s) Ivanovski and Beijerinck showed a disease in tobacco was caused by a______ correct answers Virus Viruses are____ correct answers Noncellular particles with a definite size, shape, and chemical composition Viruses are considered the most_____microbes on earth correct answers Abundant Viruses played a role in the evolution of____,_____,and____ correct answers Bacteria, Archaea, and Eukarya Viruses: a.) Contain the parts needed to invade and control a host cell and more b.) Contain only the parts needed to invade and control a host cell correct answers b. What are obligate intracellular parasites? correct answers Viruses Viruses need_____for survival correct answers A Host Two major parts of a virus is the______, and______ correct answers 1)Covering 2)Central core Viruses bare no resemblence to cells becaue they_____ correct answers Lack protein-synthesizing machinery Viruses bear no resemblance to cells because they_____ correct answers Lack protein-synthesizing machinery Helical is a_____ correct answers Continuous helix of capsomers forming a cylindrical nucleocapsid Name the two general structures of a virus correct answers 1)Helical 2)Icosahedral Icosahedral is a shape that is_____with______ correct answers 1) 20-sided with 2) 12 corners Viral envelope are: 1)Mostly____viruses 2)Acquired when the virus leaves the_____ 3)Exposed proteins on the outside of the envelope, called spikes, that are essential for______ correct answers 1) Animal 2) Host cell 3) Attachment of the virus to the host cell The Capsid/Envelope Protects the_____when the virus is outside of the host cell correct answers Nucleic acid The Capsid/Envelope Helps the virus bind to a____and assists the penetration of the_____into a suitable host cell correct answers 1) Cell surface 2) Viral DNA or RNA