Cell Membrane Transport Mechanism

Question 1

functions of plasma membrane

Answer 1

1. transport of molecules
2. phagocytosis, pinocytosis
3. cell-cell communication
4. cell signaling
5. protects the cellular organelles
6. compartmentalization
7. membrane modification for specialized functions

Question 2

channels, pumps

Answer 2

transport of molecules

Question 3

engulfing particles

Answer 3

phagocytosis, pinocytosis

Question 4

due to presence of carbohydrates

Answer 4

cell-cell communication

Question 5

cell membrane bound receptors, enzymes, and proteins

Answer 5

cell signaling

Question 6

segregates one part of the cell from other

Answer 6

compartmentalization

Question 7

the myelin sheath of neurons, microvilli in the intestine

Answer 7

membrane modifications for specialized functions

Question 8

small nonpolar molecules get in ions and polar molecules don’t get in

Answer 8

plasma membrane

Question 9

selective permeability

Answer 9

plasma membrane

Question 10

oxygen, carbon dioxide, and other small nonpolar molecules; some water molecules can get in

Answer 10

plasma membrane

Question 11

glucose and other large, polar, water-soluble molecules; ions - H, Na, K, Ca, Cl; water molecules

Answer 11

plasma membrane

Question 12

the cell membrane is described as ____

Answer 12

fluid mosaic

Question 13

made up of different molecules namely phospholipids, proteins, carbohydrates, and cholesterol, that made up one functional structure, the _____

Answer 13

fluid mosaic model; cell membrane

Question 14

reduces membrane fluidity at moderate temperatures by reducing phospholipid movement; hinders solidification by disrupting the regular packing of phospholipids during low temperatures

Answer 14

cholesterol

Question 15

animal membranes

Answer 15

cholesterol