Structure of Plasma Membrane Flashcards
1
Q
What is the structure of the plasma membrane called?
A
- Fluid Mosiac Model
1
Q
Why is the Fluid Mosiac Model said to be fluid?
A
- It is flexible and can change structure or shape.
2
Q
Why is the Fluid Mosiac Model said to be mosaic?
A
- It is studded with proteins
3
Q
What is the structure of the phospholipid bilayer?
A
- Phosphate heads of the phospholipid form both the outer surface on the membrane.
- There is an hydrophobic core inside.
4
Q
What is the function of the phospholipid bilayer?
A
- Bilayers are suited as membranes because of the hydrophillic phosphate heads can interact with water.
5
Q
What is the structure of the Glyolipids?
A
- Carbohydrates are chains
6
Q
What is the function of the Glyolipids?
A
- These molecules are called cell market antigens and can be recognized by the cells of the immune system
7
Q
What is the structure of the cholesterol?
A
- It is a lipid with hydrophillic end and hydrophobic core
8
Q
What is the function of the cholesterol?
A
- It regulates the fluidity of membranes
9
Q
What is the structure of the channel proteins?
A
- It provides a hydrophillic channels that allows passive movements.
10
Q
What is the function of the channel proteins?
A
- Interactions between the hydrophillic membrane and hydrophobic R-groups of the protein.
11
Q
What is the structure of the carrier proteins?
A
- concentration gradient
12
Q
What is the function of the carrier proteins?
A
- passive transport and active transport in the cells
- It is involved in the shape of the protein channel
13
Q
What is the structure of the glycoproteins?
A
- Intrinsic proteins. Cells surface membranes attached carbohydrates varying lengths and shape.
14
Q
What is the functions of the glycoproteins?
A
- It plays a role in cells to form tight junction in certain tissues as receptors for cell signalling.
