Type of Proteins and Their Jobs

Question 1

Integral Proteins

Answer 1

Integral proteins are embedded in the bilayer. Have at least one region that interacts with the hydrophobic core.
Generally span the entire membrane

Question 2

Peripheral

Answer 2

Peripheral proteins are positioned on surface of the membrane, do not act with the core of the membrane.
Held to membrane by non-covalent bonds (hydrogen and ionic)

Question 3

Membrane Protein Jobs (Transport)

Answer 3

Transport roteins create hydrophilic channels for some molecules to cross the membrane
(Passive and active transport)

Question 4

Membrane Protein Jobs (Enzymatic Activity)

Answer 4

Enzymatic activity proteins bind to molecules and allow them to undergo chemical reactions easier so that they can eventually pass through the membrane.

Question 5

Membrane Protein Jobs (Triggering Signals)

Answer 5

Triggering Signals may bind to chemicals to start a chain of events in the cell, through communicating from one side of the cell to the other

Question 6

Membrane Protein Jobs (Attachment and Recognition)

Answer 6

Attachment and recognition proteins on both ends of the cell membrane can bond to each other and the ECM, creating tissue; can also attach to invading cells