C. proteins-
The cytoskeleton is what provides structural support for a cell, and the cytoskeleton is made out of fibrous proteins.
Hope that helped!
What is the chart? Can you show us what it says?
The answer is rr because if it were "Rr" it would be round. Dominant always exceeds the recessive. so if both traits were recessive, it would be recessive. so "rr" is your answer
The number of electrons in the outermost shell of an atom