What is the final step of protein synthesis? 1. DNA “unzips”
2. A protein is made
3. mRNA carries the RNA strand to the cytoplasm
4. RNA attaches to a ribosome

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

What occurs during a combustion reaction

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.