cell membrane Flashcards
1
Q
what is intracellular fluid
A
inside fluid
2
Q
extracellular
A
fluid outside
3
Q
what is the structure called
A
fluid mosaic model
4
Q
what are the 2 parts of membrane
A
phosphate head, lipid tail
5
Q
what likes water
A
phospahate head
6
Q
what doesnt like water
A
lipid tail
7
Q
where is cholesterol
A
hiding in the tails, make stable
8
Q
what re the 2 types of proteins
A
channel and carrier
9
Q
what are carrier proteins
A
large opening and can reverse
10
Q
what are channel proteins
A
small always open lets little molecules through
11
Q
functions of the cell membrane
A
- physical barrier
- regulates passage of materials
- sensitivity
- support
12
Q
physical barrier purpose
A
separates the cytoplasm from extrcellular fluid
13
Q
regulation purpose
A
controlls movement in and out
14
Q
sensitivity purpose
A
can immediately detect environmental change and triggers change
15
Q
support purpose
A
give structure
