Lecture 8: Cytoskeleton and Cell Membrane I

Question 1

Fluid Mosaic Model

Answer 1

Model of phospholipid bilayer as a thin layer of oily fluid containing membrane and integral proteins

Question 2

Peripheral proteins

Answer 2

Found on outer and inner leaflets, can be removed from the phospholipid bilayer with detergents

Question 3

Integral proteins

Answer 3

Embedded within the phospholipid bilayer, extracellular portion is completely glycosylated

Question 4

Transmembrane proteins

Answer 4

Pass completely through bilayer, typically a channel protein or transporter protein

Question 5

Uniporter

Answer 5

Transport protein that carries one ion/molecule unidirectionally

Question 6

Symporter

Answer 6

Transport protein that carries two ions/molecules simultaneously or sequentially in the same direction

Question 7

Antiporter

Answer 7

Transport protein that carries two ions/molecules simultaneously or sequentially in opposite directions