Microbiology Exam Study Guide Questions with Correct Answers (100% Guaranteed Pass)

Microbiology Exam Study Guide Questions with Correct Answers (100% Guaranteed Pass) Bacteriophages - Answer-Bacteria that is infected by a virus How do Viruses attach to a host cell - Answer-Through receptors on the host cell's surface. There must be an interaction. Capsid - Answer-Protein coat that surrounds the Nucleic Acid of a virus. (not the whole virus itself. That's an envelope.) ****Made up of individualized Capsomeres**** *accounts for most of the mass of a viral cell. Capsomeres - Answer-Protein subunits that make up a capsid (think of tiny balls that come together to make a huge coating around the Nucleic Acid) *capsomeres can be made up of multiple types of proteins or one single type of protein Envelope - Answer-Surrounds the virus as a whole. *Synonymus to a somatic cell's Plasma Membrane. But around a virus. ***Composed of proteins, lipids and carbs. *Could be covered in spikes NOT ALL VIRUSES HAVE ENVELOPES Spikes - Answer-Cover the envelope of the cell Composed of protein and carbohydrates. -Used for attachment to the host cell Spikes differ, and can be identified as different virus by the host body. That's why you can get the flu more than once a year, there's a change in spikes. -Can be used for identification for some virsus under microscope. Helical Capsid - Answer-Long rods that are flexible and rigid These surround the Nucleic Acid. *Capsids are hollow cylinders surrounding the nucleic acid. *CAN OR CANNOT HAVE A ENVELOPE.