The Plasma Membrane
- The plasma membrane, or cell membrane, is an organelle made up of lipids and proteins and forms a boundary around the cytoplasm
- Can surround/enclose a vacuole
- Regulates the passage of molecules in and out of the cytoplasm
- Found in both prokaryotic and eukaryotic cells
- In animal cells, the plasma membrane is in the outer most layer of the cell
- In plant cells, it is located just beneath the cell wall
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| Phospholipid bilayer |
Structure and Function:
- Composed of a phospholipid bilayer
-A phospholipid bilayer is a double lipid membrane, the head of the phospholipid keeps the tail of it from getting wet, the tail is a fatty acid
- Contains proteins throughout
- Some proteins serve as channels to let molecules enter and leave the cell, these are known as integral proteins
- The plasma membrane is selectively permeable to ions and organic molecules
- Boundary that separates the living cell from non-living surroundings
-Marks the boundary between the inside and outside of the cell
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| Prokaryotic cell |
Reflection:
For this blog, I learned a lot about how proteins are involved in the membrane. I already knew a lot about the plasma membrane because we learned about it during class. I was surprised to see what it actually looked like up close. I learned more about where it's located in both plant and animal cells. The plasma membrane can't really be used outside of biology, since it is involved in cells.
For this blog, I learned a lot about how proteins are involved in the membrane. I already knew a lot about the plasma membrane because we learned about it during class. I was surprised to see what it actually looked like up close. I learned more about where it's located in both plant and animal cells. The plasma membrane can't really be used outside of biology, since it is involved in cells.
Citations:
Study.com. Study.com, n.d. Web. 01 May 2017.
Study.com. Study.com, n.d. Web. 01 May 2017.
"Plasma Membrane." Plasma Membrane | Structure, Function of Plasma Membrane | Biology@TutorVista.com. N.p., n.d. Web. 01 May 2017.
"What biomolecules are found in the cell membrane? | Socratic." Socratic.org. N.p., n.d. Web. 01 May 2017.





Does the thickness of the plasma membrane vary between certain kinds of cells?
ReplyDeleteNo, it's normally the same
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