Module 7 Flashcards
Cell membrane is also known as…
Plasma membrane
One of the essential structures common to all cell types
Cell/plasma membrane
Acts as a barrier that separates the cytoplasm from the cell’s outer surroundings
Cell membrane
Cell membrane separates the cell’s outer surroundings from…
Cytoplasm
Property of cell membrane that allows it to regulates what molecules will enter or leave the cell as needed
(It being) selectively permeable
Receives and responds to external stimuli
Cell membrane
The cell membrane is made up of four different molecules which are…
Phospholipid, proteins, cholesterol, and carbohydrates
The cell membrane is composed of…
Phospholipid bilayer
A two-layer of phospholipid oriented in opposite directions
Phospholipid bilayer
A phospholipid molecule is made up of…
Glycerol molecule bonded to a phosphate “head” group and two fatty-acid “tails”
What is the bond of the phosphate head end?
Polar covalent bond
This word means attracted to water molecules
Hydrophillic
This word means water-dreading or water-repelling
Hydrophobic
This part of the phospholipid bilayer is hydrophillic
Phosphate head end
This part of the phospholipid bilayer is hydrophobic
Tail end
The tail end is made up of…
Two chains of fatty acids
It means containing both hydrophilic and hydrophobic parts.
Amphiphilic/amphipathic
This part of the phospholipid bilayer is left hidden in the middle
Tail end
This part of the phospholipid bilayer faces the intracellular fluid on one layer and the extracellular on the other
Phosphate head group
This specific property of the cell membrane allows only certain substances to pass through it
Selective permeability
Can O2 and CO2 go into the cell? - Lesson on cell membrane
Yes
Can glucose go into the cell? - Lesson on cell membrane
No
Can small non-polar molecules go into the cell? - Lesson on cell membrane
Yes
Can large polar molecules go into the cell?
No
