The human eye has 3 receptors for color- one each for blue, green and red. These are the 3 primary colors of light. All other colors are a result of a mixture of these colors. The retina takes in...
these are viruses that infect bacteria and fungi respectively. that is unless you are talking about something that infects other types of organisms, in that case there is no such thing as bacteria...
Yes- Bacterial viruses are called bacteriophages. Some examples are T4 and T7 phages. They are complex DNA viruses that attach themselves to the cell surface and then inject their DNA to the inside...