Which best relates cells and viruses? 1. Viruses grow and reproduce like cells.
2. Cells can infect specific host viruses.
3. RNA is found in cells, but not in viruses.
4. Viruses can infect certain cells.

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds