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A lot of different things...
Mostly - a phospholipid bilayer, that's hydrophyllic on the outside and hydrophobic on the inside. It keeps liquid stuff contained within the membrane (inside the cell), as well outside, and doesn't let things normally pass though the membrane.
Also - there are proteins embedded in the membrane that act as portals for specific chemicals to move in and/or out of the cell (usually requires energy to move things in or out - called active transport).
Finally, there are a lot of other things embedded in the membrane - glycoproteins, cholesterol, etc. They give integrity to the membrane - keep it stable - when there are variations in temperature, pH, concentrations in salt, etc.
What else can I help you with?
What do the cytosol and organelles make up?
The cytosol and organelles together make up the cytoplasm of a cell. The cytosol is the gel-like fluid where organelles are suspended and various cellular processes occur. Organelles are membrane-bound structures with specific functions within the cell.
What 2 thing make up the cell membrane?
The cell membrane is primarily composed of lipids (such as phospholipids) and proteins. These two components work together to control the passage of substances in and out of the cell, maintain cell structure, and facilitate cell communication.
What parts make up the cell membrane?
Most of the cell membrane are made up of proteins and phospholipids. The phospholipids make up the basic cell body, with tiny holes scattered around. It is not a solid piece. The proteins gather around the tiny holes and help move molecules in and out of the cell.
What part of the cell is the outer part of an animal cell?
The outermost structure of an animal cell is the cell membrane. The cell membrane is the membrane separating the interior of the cell from the outside environment. It is made up of proteins and lipids.
Why are phospholipids crucial for the functioning of cells?
Phospholipids are crucial for cell functioning because they make up the cell membrane, which controls what enters and exits the cell. They also help maintain the structure and integrity of the cell membrane, allowing cells to communicate with each other and their environment.
What do the cytosol and organelles make up?
The cytosol and organelles together make up the cytoplasm of a cell. The cytosol is the gel-like fluid where organelles are suspended and various cellular processes occur. Organelles are membrane-bound structures with specific functions within the cell.
What 2 thing make up the cell membrane?
The cell membrane is primarily composed of lipids (such as phospholipids) and proteins. These two components work together to control the passage of substances in and out of the cell, maintain cell structure, and facilitate cell communication.
What two things make up all cell membrane?
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What two things make up a cell membrane?
phospholipids and embedded
What make up phospholipid?
Phospholipids are a major component of the cell membrane.
What kind of molecules make up cell membrane?
brain cells
What substance make up the outside boundary of a cell that does not have a cell wall?
The cell membrane makes the boundary of the cell. It is a lipid bilayer.
How many cell layers make up the onion membrane?
2 layers
What 2 things make up t he cell membrane?
Protein and lipid.
What makes up the outside of the cell?
Proteins and phospholipids make up most of the membrane structure.
What molecule makes up the bulk of a cell's membrane?
Phospholipids make up the bulk of a cell's membrane. They have a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails, which form a lipid bilayer that provides the structure and integrity of the cell membrane.
Do lipids play a important fact in the cell Membrane?
Yes - they make up most of it.
