Cell Membrane Flashcards
Do all cells have a cell membrane?
Yes.
Cell Membrane Main Functions
Protection, a Fixed Environment, Transport, and Structural Support.
Why is the cell membrane significant?
Since it regulates cell transport, it is important for homeostasis.
What unique characteristic does the cell membrane have in regulating what can &can’t enter the cell?
It has a semi-permeable, and selective membrane.
The model used for interpreting the cell membrane used until today.
Fluid Mosaic Model
Why is the Fluid Mosaic Model fluid?
It is flexible and changes shape.
Why is the Fluid Mosaic Model mosaic?
Like a mosaic, it is consisted of several molecules.
How does the cell membrane be selectively permeable?
It receives and responds to stimuli.
What are the different components of the cell?
Phospholipids
Proteins
Cholesterol
Carbohydrates
Phospholipids have a unique characteristic in that it is ___.
Amphipathic
What is the definition of the phospholipids being amphipathic?
It is both hydrophilic and hydrophobic.
It mainly provides structure to the cell.
Phospholipids
With phospholipids being a main component for the cell having structure, it is ___.
Abundant
Phospholipids are composed of:
A Phosphate Head and Two Fatty Acids
The head of a phospholipid is composed of ___ and ___.
Glycerol and phosphate.
What part of the phospholipid is hydrophilic
and makes +H bonds with water (since it’s polar)?
Phosphate-linked Head Group