- What the difference between a cell and a virus?
- Why can’t a virus reproduce on its own quizlet?
- How do viruses use their host cells?
- How do viruses enter their host quizlet?
- Why does a virus need a host cell quizlet?
- Can viruses reproduce on their own?
- How do viruses gain entry to the host?
- Why do viruses enter host cells?
What the difference between a cell and a virus?
Cells are the basic units of life.
Viruses are non-living infectious particles, much smaller than a cell, and need a living host to reproduce.
The genetic material of the cell is DNA, a double stranded helix.
Viruses however, can use DNA in a double or single strand, as well as RNA in a double or single strand..
Why can’t a virus reproduce on its own quizlet?
Are Viruses Alive? They do not respire, eat, excrete, or reproduce. By itself, a virus can not do anything. Viruses affect every living cell known, from man to bacteria.
How do viruses use their host cells?
Viruses depend on the host cells that they infect to reproduce. … When it comes into contact with a host cell, a virus can insert its genetic material into its host, literally taking over the host’s functions. An infected cell produces more viral protein and genetic material instead of its usual products.
How do viruses enter their host quizlet?
_ Animal viruses can enter their host cells by either fusion or endocytosis. Fusion is performed by animal viruses; it occurs when the viral envelope fuses with the membrane of the host cell. … After animal viruses enter their host cell, they shed their capsid in order to release its nucleic acid.
Why does a virus need a host cell quizlet?
Why does a virus need a host cell? Due to the small genome size viruses can only encode for primary proteins and not all cell functions. Thus, they need host cells for energy and for carrying out metabolism. For replication of its genome and synthesis of proteins, Also reproduction.
Can viruses reproduce on their own?
How do viruses multiply? Due to their simple structure, viruses cannot move or even reproduce without the help of an unwitting host cell.
How do viruses gain entry to the host?
Viral entry into host cells usually involves interactions between molecules on the surface of the virus and specific cell surface receptors, which allow the virus to bind to the host cell and initiate the viral entry process.
Why do viruses enter host cells?
When the viral glycoprotein binds to its receptor, a process is triggered in which the host and viral membranes fuse and the genetic material of the virus is delivered into the cell. Professor Choe has investigated these viral glycoproteins and cellular receptors for a range of different viruses.