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.
Some viruses remain outside the cell. They attach to the membrane at specific receptor sites. Once attached the virus injects its DNA or RNA into the cell. Enveloped viruses are enclosed in a membrane similar to that of the host cell. The virus and the envelope fuse and the virus enters the cell through endocytosis.