- What are the three main types of viruses?
- Which argument supports the idea that viruses are alive?
- Why would a virus bother with a Lysogenic stage?
- Can viruses infect plants?
- How do viruses multiply?
- Are viruses living?
- Do viruses have DNA?
- Do viruses attack bacteria?
- What is an example of a Lysogenic virus?
- What is the benefit for a virus to be a temperate or lysogenic virus?
- Why are Lysogenic viruses more dangerous?
- Which plant virus is Gemini virus?
What are the three main types of viruses?
The Three Major Types of Computer VirusesMacro viruses – These are the largest of the three virus types.
They use built-in programming scripts in such applications as Microsoft Excel and Microsoft Word to automate the tasks.
Boot record infectors – These viruses are known also as boot viruses or system viruses.
File infectors – These viruses target ..
Which argument supports the idea that viruses are alive?
Which argument supports the idea that viruses are alive? Viruses contain unique genetic information. Many biologists debate how a virus should be classified. In 2008, scientists in France discovered that a virus was capable of infecting another virus.
Why would a virus bother with a Lysogenic stage?
During this stage, the infected cell appears “normal” and will not exhibit symptoms. However, certain triggers like stress can cause the viral DNA to reactivate and begin the lytic cycle. The danger in the lysogenic stage is that the more time it utilizes, the more infected daughter cells are produced.
Can viruses infect plants?
Some viruses can infect plants when aphids and other insects tap into the phloem to feed. Such insect vectors can also pick up virus particles and carry them to new plant hosts. Other viruses infect plant cells through a wound site created by a leaf-munching insect such as a beetle.
How do viruses multiply?
For viruses to multiply, they usually need support of the cells they infect. Only in their host´s nucleus can they find the machines, proteins, and building blocks with which they can copy their genetic material before infecting other cells.
Are viruses living?
So were they ever alive? Most biologists say no. Viruses are not made out of cells, they can’t keep themselves in a stable state, they don’t grow, and they can’t make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
Do viruses have DNA?
Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. The simplest viruses contain only enough RNA or DNA to encode four proteins.
Do viruses attack bacteria?
Bacteria can be infected by tiny viruses called bacteriophages (phages). Bacteriophages are so small they do not even have a single cell, but are instead just a piece of DNA surrounded by a protein coat.
What is an example of a Lysogenic virus?
As the lysogenic cycle allows the host cell to continue to survive and reproduce, the virus is reproduced in all of the cell’s offspring. An example of a bacteriophage known to follow the lysogenic cycle and the lytic cycle is the phage lambda of E. coli.
What is the benefit for a virus to be a temperate or lysogenic virus?
What is the benefit, for a virus, to be a temperate or lysogenic virus? A single infection event can produce millions of new viral particles instead of hundreds of viral particles.
Why are Lysogenic viruses more dangerous?
Why are lysogenic viruses more dangerous than lytic viruses? Lysogenic viruses integrate their own DNA with the host DNA. … It becomes a provirus in the lysogenic cycle, and settles for many years in the body.
Which plant virus is Gemini virus?
See text. Geminiviridae is a family of plant viruses. There are currently 485 species in this family, divided among 9 genera. Diseases associated with this family include: bright yellow mosaic, yellow mosaic, yellow mottle, leaf curling, stunting, streaks, reduced yields.