How do viruses reproduce using the machinery of the cell? Describe the significance of a positive antibody screen. Which class of antibodies plays a role in activating the complement and clumping cells? What is the type of adaptive immune response mediated by antibodies produced by B lymphocytes?
Virusesare much smaller than bacteria and are not considered living organisms. They are infectious agents with only a protein shell and a strand of RNA or DNA, depending on the type of virus. They do not reproduce on their own—like bacteria do. Instead, viruses need a host cell to do t...
The influence of viruses on life on Earth, though, goes far beyond the past and present tragedies of a single species, however pressing they seem. Though the study of viruses began as an investigation into what appeared to be a strange subset of pathogens, recent research puts them at the ...
1.Eliminate HIV/AIDS and other deadly viruses. Viruses spread their harm by replication once they are inside the body of a host. By cutting out the DNA’s ability to reproduce, the virus loses its potency. So far, the feasibility and efficiency of excision of HIV-1 provirus has been pro...
1. How do scientists classify things as living? 1.Made of cells 2.Has a metabolism to grow and reproduce 3.Information stored in DNA 2. Are viruses alive? NO! Living or Nonliving? Viruses 3. What do viruses and living organisms have in common? Both use nucleic acids to store genetic ...
How do viruses gain entry into a host cell? A. By binding to a receptor site on the host cell. B. By binding to an antibody site on the host cells. C. By dissolving a piece of the host cell membrane. D. All of the above ...
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Unlike bacteria and viruses, fungi are transmitted from one person to another. However, their spores are present in the air and we breathe them all the time. Fortunately, our immune systems are well-equipped to fight these microorganisms.
Self-replicating viruses can rapidly reproduce copies of themselves to use up your hard drive space. A sudden surge in memory usage during daily tasks is another sign that your device has a virus. If you have encountered this condition, you are supposed to take a simple check of your device...
Viruses consist of nucleic acids surrounded by a protein coat and sometimes a membranous envelope. Since viruses only encode a limited number of proteins, they can only reproduce parasitically in host cells. For this purpose, they exploit cellular machineries and pathways of their host to replicate...