VIRUSES lesson 5: How Viruses Enter Cells Quizellenjmchenry2022-06-02T15:24:14-04:00 Please sign up for the course before taking this quiz. Which receptor does coronavirus attach to?1 CD4 CD155 CAR ACE2 All viruses need to merge (fuse) with the host membrane.1 True False Cell can’t communicate because they can’t talk.1 True False Some enzymes act like scissors.1 True False Can you remember which of these is a naked virus with no envelope?1 influenza HIV coronavirus polio Which of these is NOT a glycoprotein?1 NA (neuraminidase) HA (hemagglutinin RNA the receptor on which sialic acid is found Cell receptors where viruses bind were first discovered while Mrs. McHenry (the author) was a young adult.1 True False CD4 is found on T cells, which are important members of your immune system. Which virus attaches to CD4?1 Polio HIV Adenovirus Influenza A Which one of these could NOT be a type of influenza?1 H2N2 H1H3 H5N7 H12N3 Some viruses can stick to red blood cells.1 True False Which is true of a motor protein?1 It uses ATP energy to "walk" along the microtubule. It pulls endosomes through the cell. All of these. It is made of amino acids. It travels along microtubule "highways" made of protein "cables." REVIEW: Which cycle is the one where the virus hides for a long time inside the host’s genome?1 lysogenic lytic What does “clathrin coating” of an endosome do?1 It acts like a scissor and cuts the endosome from the membrane. It pulls the endosome along a microtubule, toward the nucleus. It acts like a scaffold, helping the endosome to form. It helps the virus to bind to the endosome membrane. Cells have identification tags.1 True False Why are the proton pumps so important in these lessons?1 Because they are needed for the virus to be able to attach to a binding site. Because viruses need low pH to cause shape changes that will allow it to get out of the endosome. Because viruses use the protons as an energy source so they can move. Because they are needed for the clathrin coating to be formed around the endosome. VIRUSES lesson 4: Bacteriophages VIRUSES lesson 6: Inside a Cell Back to: VIRUSES lesson 5: How Viruses Enter Cells
