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Some of the most well understood viruses are those that infect bacteria (bacteriophages, or phages for short). One such example is the T4 phage. This virus manages to stop production of the host cell's own proteins through modification of the enzymes responsible for production of host cell mRNA*1. It does this by using the cell's enzymes to produce proteins encoded on the virus' DNA. These proteins then bind the the cell's RNA polymerase*2 which renders them unable to recognise the cell's own promotors*3 while still being able to recognise the viral DNA's promotors. The viral DNA now has control over the cell's machinary and uses it to express proteins that assist replication of the viral DNA, and proteins into which it can package this DNA to make full virus particles.
not sure of your existing level of understanding, but just in case here's a little glossary of a few terms I've used:
*1 mRNA - short for messenger RNA, this is essentially the blueprint for production of proteins and enzymes, which has been noted down from the master plans stored in the DNA
*2 RNA polymerase - this is the enzyme responsible for production of the mRNA - it is essential to transmission of information stored in the DNA, and the resultant production of protein and enzymes
*3 promotors - these are basically like neon signs for genes within the DNA (a gene encodes the information for making a protein) saying "Take my plans - Make my protein!!". When these are switched on the RNA polymerase will take down the information and protein production can begin. If the promotor cannot be recognised by the RNA polymerase no production of that protein can be undertaken.
What else can I help you with?
What are Viruses that immediately take over a cell's functions called?
A virus the immediately takes over a cell's functions is an active virus. An active virus causes the host cell to make new viruses, destroying the host cell.
What is the big difference between viruses and bacteria?
Viruses are replication parasites that can do nothing until they take over a living cell. Bacteria are living cells.
Do Viruses multiply through binary fission?
No, they do not. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again.No, only living cells divide by binary fission. Viruses are not alive.
What can viruses reprouduce?
Viruses don't actually reproduce by themselves. When they enter somebodies body, they take over a cell and sort of hack its system to make the cell produce copies of the virus and not itself. That is why you get sick.
Are viruses much smaller than?
I think so because viruses usually go inside bacteria and take over the bacteria cell But I'm totally sure
Why is it not correct to call a virus a microbes?
Viruses are not an organism at all. They are not alive. They are nonliving. They are like cockle burrs that "grab" hold of your clothing or a dog’s coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
What is uses energy to take particles into a cell?
viruses
How are viruses living when they do not show any movement?
Viruses are not an organism at all. They are nonliving. They are like cockle burrs that "grab" hold of your clothing or a dog's coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
How are viruses are living when they do not show movement?
Viruses are not an organism at all. They are nonliving. They are like cockle burrs that "grab" hold of your clothing or a dog's coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
Do viruses breath or eat?
Viruses are not an organism at all. They are not alive. They are nonliving. They are like cockle burrs that "grab" hold of your clothing or a dog's coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These parts can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
What characterstics of life do viruses not have?
Viruses are not an organism at all. They are not alive. They are nonliving. They are like cockle burrs that "grab" hold of your clothing or a dog's coat. They are hijackers. Once they get attached to the cell of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These parts can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own.
Are viruses much smaller than bacteria?
I think so because viruses usually go inside bacteria and take over the bacteria cell But I'm totally sure
