Oil of rosemary does not just repel ticks; it also deters flies, aphids and mites. While oil of rosemary is a tick repellent, it is not the most effective one available. Rose geranium and palmarosa essential oils repel ticks better.
Confidence votes 61. Viruses attach to living cells by binding to the cell receptors. The receptor site is very much like a jig-saw puzzle and the virus must be shaped to fit the site and to lock in. The virus first sticks to the cell membrane of the host cell. The virus then inserts its DNA/RNA into the cell's cytoplasm.
For a virus to reproduce it must infect a host cell. To do this it must first come in contact with the host organism and enter the host organism. Exposure of the host to the virus is the first step in the viral life cycle. Viruses can enter a host in several ways.For example, through a cut in the skin, a mosquito bite (inoculation), or by direct contact with mucus membranes.iruses infect our cells, replicate, and then need to leave. One of the ways they choose to leave is by destroying the host cell. They do this by cutting (lysing) their way out. This is called the lytic cycle of a virus and is the subject of this lesson.