Question

multiple - choice question
which part of the prokaryotic and eukaryotic cells controls what goes in and out of the cell and helps maintain homeostasis?
cytoplasm
dna
cell membrane
cell wall
ribosomes
rewatch

Explanation:

• Cytoplasm: It is the jelly - like substance inside the cell where organelles are suspended. It does not control the movement of substances in and out of the cell.
• DNA: It contains the genetic information of the cell. Its main function is related to heredity and protein synthesis, not regulating the entry and exit of substances.
• Cell membrane: It is a semi - permeable membrane. It allows certain substances to pass through while blocking others, thus controlling what goes in and out of the cell. This is crucial for maintaining the internal environment (homeostasis) of the cell.
• Cell wall: In plant cells (a type of eukaryote) and some prokaryotes, the cell wall provides structural support and protection. It is not involved in the selective transport of substances like the cell membrane.
• Ribosomes: They are the sites of protein synthesis. Their function is related to building proteins from amino acids, not regulating the cell's boundary.

Answer:

Cell membrane