Viruses are composed of two main parts an outer protein covering called a capsid and inside core of either DNA or RNA. Not both DNA and RNA. Some of these have an envelope over the capsid. The ones that do not are said to be naked. The proteins in the capsid allow the virus to attach to the "docking stations" proteins of the host cell. The naked viruses are more resistant to changes in the environment.
Some naked viruses include poliomyelitis, warts, the common cold, chickenpox, shingles, mononucleosis, herpes simplex (cold sores), influenza, herpes viruses and HIV (AIDS).
Some enveloped viruses include norovirus (stomach bug), rotavirus and human papillomavirus (HPV).
The envelope can be damaged by freezing temperatures, chlorine, and phenol. If damaged the virus cannot infect.
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.
They are very small and can be considered ultramicroscopic. We were not able to see them with the best light microscopes. We have to use an electron microscope to see them as they are that small. This was not available until recently.
Protective protein coat
Inside the protein part... The genetic material is sorrounded by the protein :):)
Scientists thought genetic material was a protein not DNA because there are 20 different amino acids for a building of a protein polymer, while DNA polymers only have 4 nucleotide bases.
Protein was originally thought to be the genetic material because of its complexity, protein is made up 20 different amino acids while DNA only consists of four bases. This was logical as the complexity would account for diversity in organisms. But after more research was done it was realized that DNA was actually the genetic material.
nucleic acids
Protective protein coat
A virus has a protective protein coating called the capsid. The capsid is a cover for the genetic material inside, either RNA or DNA.
Inside the protein part... The genetic material is sorrounded by the protein :):)
The two parts of a virus are the protective protein coating and the genetic material inside.A protein coat and a nucleic acid (either RNA or DNA)
genetic material is a cell that can be turn into a amino acid to a protein.
Viruses are bits of genetic material, either DNA or RNA, that are covered in a protein sheath.
Inside the protein part... The genetic material is sorrounded by the protein :):)
The protein sequence.
A typical virus is made up of a core of genetic material, either RNA or DNA. It is engulfed by a protective coat referred to as a capsid which is made up of protein.
scientists
Scientists thought genetic material was a protein not DNA because there are 20 different amino acids for a building of a protein polymer, while DNA polymers only have 4 nucleotide bases.
Correct. For APEX it is, A protective shell around a virus.