What are the functions of the cell membrane?
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
What are two functions of the cell membrane quizlet?
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer from tail to tail with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
What are the 2 main parts of the cell membrane?
Image modified from OpenStax Biology. The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
Why is a cell membrane important to a cell?
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And those proteins which stick outside of the plasma membrane will allow for one cell to interact with another cell. The cell membrane also provides some structural support for a cell.
What is the function of the Golgi body?
The Golgi apparatus is responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations. As the secretory proteins move through the Golgi apparatus, a number of chemical modifications may transpire.
What is the functions of lysosomes?
A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria.
What color is a lysosome?