K101 DR. MARRS EXAM 2| LATEST UPDATED SOLUTION
1. 9 main parts of plasma membrane mosaic: 1. integral proteins/trans-membrane proteins/in-
tegrins
2. glycoproteins
3. glycolipids
4. cholesterol
5. lipids
6. proteins
7. extracellular matrix
8. E and P face
9. peripheral proteins
2. junctions and their functions: 1. tight junctions- presses membranes of neighbor cells together to
form strong sheets
2. desmosomes- anchor and fasten cells together to prevent cellular fluid from leaking
3. gap junctions - for communication between cells with cytoplasmic channels
3. 6 major functions of membrane proteins: transport, enzymatic activity, signal transduction,
cell-cell recognition, intercellular joining, attachment of cytoplasm to ecm
4. hypotonic:
https://www.stuvia.com/user/Mboffin 1/
15
, 5. isotonic:
6. hypertonic:
https://www.stuvia.com/user/Mboffin 2/
15
1. 9 main parts of plasma membrane mosaic: 1. integral proteins/trans-membrane proteins/in-
tegrins
2. glycoproteins
3. glycolipids
4. cholesterol
5. lipids
6. proteins
7. extracellular matrix
8. E and P face
9. peripheral proteins
2. junctions and their functions: 1. tight junctions- presses membranes of neighbor cells together to
form strong sheets
2. desmosomes- anchor and fasten cells together to prevent cellular fluid from leaking
3. gap junctions - for communication between cells with cytoplasmic channels
3. 6 major functions of membrane proteins: transport, enzymatic activity, signal transduction,
cell-cell recognition, intercellular joining, attachment of cytoplasm to ecm
4. hypotonic:
https://www.stuvia.com/user/Mboffin 1/
15
, 5. isotonic:
6. hypertonic:
https://www.stuvia.com/user/Mboffin 2/
15
