Cells are of two types: eukaryotic, which contain a nucleus, and prokaryotic, which do not. Prokaryotes are single-celled organisms, while eukaryotes can be either single-celled or multicellular.
The answer should be 4) as it is known that uv radiation might have an effect on dna, thus causing mutations such as skin cancer in humans.
Gated channel proteins are the name you are looking for
Method 1:1. Start with your equation and determine which variables you know.
2. Use the lens equation to get d.
3. Sovle for h.
4. Solve for M.
5. Interpret your M value.
6. For diverging lenses, use a negative focal length value.
