The correct answer is D. for sure.
To protect them from ultraviolet rays from the sun.
Answer:
Lysosome - Janitor, cleans up food particles, waste, and dead cell parts.
Nucleus - Principal, contains DNA and is the control center for the cell.
Cell Membrane - Basically the walls of the school building
Ribosomes - Cafeteria Workers, creates "food" by combining amino acids.
Hope this helps!
thymine
adenine
cytosine
guanine
Explanation:
uracil is not because uracil is only RNA.
