Question

fill in the blank question
even though cells exhibit tremendous variation in shape and structure, they all have 4 major features: the presence of genetic material, a cytoplasm, (for the synthesis of proteins) and a that separates them from the outside environment.

Explanation:

Cells have key components. Ribosomes are for protein - synthesis and the cell membrane separates the cell from the external environment.

Answer:

Ribosomes; Cell membrane