by the chloroplast
Cell membrane controls which substances can move in and out of a cell. It is the dynamic boundary of cell
no, because motor proteins would have to work harder to move substances and organelles.
Transport protein
cilia
the cell membrane
The plasma membrane helps to maintain homeostassi within the cell by allowing substances to move in and out of the cell the plasma membrane is used to maintain homeostasis within the cell by allowing substances to move in and out of the cell
transportation system
Helps substances move in and out of the cell
Exocytosis
Substances such as nutrients, oxygen, and water need to penetrate all parts of a living cell to support its metabolic processes and maintain its function. Waste products and signaling molecules also need to move throughout the cell for proper communication and waste removal.
Projections that allow the cell to move or to move substances along the surface of the cell are called cilia and flagella. Flagella is a single long hair that allows the cell to swim. Cilia are several projections used for movement across the cell surface.
The Cell Membrane is usually attributed with controling which substances can move in and out of the cell.