(58) During an experiment, a virus is isolated from clinical samples. Electon microscopy shows that it has an icosahedral shape. Which of the following viral complements most likely determines the shape of the virus? (A) Capsid (B) genomic polarity (C) Glycoprotein (D) Matrix protein (E)Spike protein

C) complex D) polyhedral 23. The first step in viral infection is the recognition between the virus and the host cell. Which of the following statements best describes how that occurs? A) The viral genome matches the host cell genome. B) Surface proteins on the virus are recognized by receptor proteins found in the plasma membrane of the host cell. C) The viral genome is recognized by the capsid that surrounds the host cell genome. D) The envelope on the virus is recognized by the host cell genome.

A particular animal virus requires the use of DNA polymerase from its host, since it does not possess its own DNA polymerase enzyme. Which of the following assumptions in A-D would likely be correct regarding this virus? A) O This virus could not be a retrovirus type. B) OIt could be a (-) ss RNA virus. C) O It could be a (+) ss RNA virus. D) O The vVirus life cycle very likely includes going to the host cell nucleus. E) O All ofA-D are correct assumptions.

Enveloped viral membranes are generally ________ with associated virus-specific ________. A) lipid bilayers / phospholipids B) protein bilayers / lipids C) lipid bilayers / proteins D) glycolipid bilayers / phospholipids

Which statement is true of viral replication?  A)  virus attaches to a specific receptor site on the host-cell membrane.   B)  Once inside the cell, the viral capsid is degraded, and the viral nucleic acid is released.  C)   Virus uses the host cell’s machinery to replicate and new virus particles are released.  D)      All of the above

The capsid of a virus consists of (a) protein subunits (b) nucleic acid (c) helical lipids (d) a carbohydrate envelope (e) RNA and lipid

Which of the following are activities that a virus particle (a virion) cannot accomplish by itself? Select all that apply. a) Extract energy from food molecules b) Synthesis of capsid proteins c) Generate ATP d) Binding to a host cell e) Replication of the viral genome

A viral protein has a 20 amino acid amino acid chain consisting of the following primary structure: A-G-L-F-A-F-P-P-W-G-G-V-C-M-G-L-G-A-M-C In what places could these amino acids be found? a) Inside the hydrophobic core of a protein b) In a membrane that encloses the virus c) On the outside of a protein d) In a virus nail on the surface of the virus

Which of the following viral components must get into a cell's cytoplasm in order for the virus to be replicated? A) Protein spikes B) The virus envelope C) The virus genome D) The virus capsid

A patient has arrived at the doctor complaining of acute respiratory symptoms (cough, runny nose, fever). The patient explains to the doctor that he was at a concert the night before and shared a water bottle with a friend who had similar symptoms. The doctor tells the patient that he has a virus. a.) Can the doctor prescribe an antibiotic for this patient? Explain. b.) What form of replication do you think this virus does use? How do you know?   explain in details