BIO301 Class 9 Flashcards
1
Q
what is the important characteristic of a phospholipid?
A
- long hydrocarbon chain
- carboxylic acid group
- amphiphilic/amphipahthic
2
Q
In which form is fat stored in fat cells?
A
triglycerides
3
Q
saturated
A
all carbons have maximum number of hydrogens
4
Q
unsaturated
A
some carbons have double bonds
5
Q
which is in animals and which is in most plants?
A
animals → saturated
plants → unsaturated
6
Q
most naturally occurring fatty acids are in which confirmation?
A
unsaturated
7
Q
which membrane has more tightly packed lipids?
A
saturated lipids only
8
Q
flippase
A
- requires energy
moves lipids to the inside
9
Q
floppase
A
- requires energy
moves lipids to the outside
10
Q
scramblases
A
- do not require energy
- move lipids in either direction, toward equilibrium
11
Q
passive transport
A
- diffusion
- facilitated diffusion/transport
12
Q
active transport
A
- ATP is required
13
Q
coupled transport
A
- coupling to another molecule’s import
- requires trading one molecule for another
