About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.
So the outer covering of a virus is a "capsid" but what is the capsid made of?
And, Mumps is a disease caused by a virus that infects the salivary glands, swelling of the glands usuall begins 18 days after contact with the virus. So which of the following is most likely true about the virus which causes mumps?
A) The virus is one which only goes through the lytic cycle
B) The virus is one which goes through both lysogenic cycle and the lytic cycle
C) The virus forms a provirus
D) The virus is a bacteriophage
Look up the definitions of your four terms (lytic, lysogenic, provirus and bacteriophage) and the answer will be easy.
Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)
this would be easy to find on google or wikipedia. I personally don't mind beginners asking these types of questions because anyone wanting to learn is great in my book but wouldn't it be easier to search for rather than waiting on an answer.
Forgive him, for he believes that the customs of his tribe are the laws of nature!
For one thing, they differ greatly in size. The biggest viruses are only as large as the tiniest bacteria.
A typical bacterium has a rigid cell wall and a thin, rubbery cell membrane surrounding the fluid, or cytoplasm inside the cell where as a virus may or may not have an outermost spiky layer called the envelope.
Bacteria contain the genetic blueprint (DNA) and all the tools (ribosomes, proteins, etc.) they need to reproduce themselves.
Viruses are moochers. They contain only a limited genetic blueprint and they don't have the necessary building tools. They have to invade other cells and hijack their cellular machinery to reproduce. Viruses then invade by attaching to a cell and injecting their genes or by being swallowed up by the cell.
Who is online
Users browsing this forum: No registered users and 3 guests