In addition to protecting the cell the plasma membrane plays a vital role in many other processes.
Which of the below statements is NOT a process which involves the plasma membrane?
1) Facilitating cell movement and expansion
2) Facilitating translation o
3) Replication of the cellular DNA for cell division.
Electrical signals are converted to chemical signals where?
1) at the plasma membrane
2) at the presynaptic membrane
3) in the synaptic cleft
4) at the neurotransmitter receptors
2) At the presynaptic membrane
Which of the following are components of the hydrophilic head of the most common phospholipid?
A. phosphate group
B. glycerol
C. choline
D. A & B
E. All of the above
E. All of the above
Sphingomyelin
Myelin sheathing, mostly outside, signaling
Phosphatidylserine
found on inside, flips to outside during apoptosis
Phosphatidylcholine
mainly structural found on outside
Glycolipids
provides energy and acts as cell surface marker
Cholesterol
maintain fluidity and structure of the membrane
Inositol phospholipids
important signaling molecules
Phosphatidylethanolamine
found on inside, involved in membrane fusion
Which of the below is NOT an example of a regulated ion channel?
1) stress- gated
2) ligand-gated
3) voltage gated
4) porins
4) Porins
Which of the following statements is NOT a description of the Unfolded Protein Response?
1) stimulates the cell to make more ER
2) requires a lot of transcription
3) is a way the cell reacts to its needs
4) can lead to cell death via apoptosis
5) is an im
6) Occurs in the Golgi body
Cells and all organelles within a cell are wrapped in a lipid bilayer membrane.
What is the purpose of the membrane?
1. To catalyze chemical reactions
2. To facilitate transcription and translation of new proteins
3. To compartmentalize chemical reactions
3. To compartmentalize chemical reactions
Which of the following is NOT an example of a membrane protein
1) receptors
2) anchors
3) chaperones
4) transporters
2) Anchors
Snares
Docking of vesicles at the membrane
Clathrin
Coating protein which forms a basket around vesicles
Oligosaccharide protein transferase
Glycosylates extracellular proteins
Nuclear Transport receptor
Helps actively transport proteins into the nucleus
Signal recognition particles
Recognize localization signals and move Ribosome to the ER
Which of the below cellular functions does NOT require cytoskeleton proteins?
1) cell division
2) support the cell membrane
3) movement of organelles around the cell
4) respiration
4) Respiration
(T/F) Proteins destined for the mitocondria must pass through the golgi body before reaching their final destination
False
(T/F) Proteins pass into the Chloroplasts in the final Quaternary structure
False
Which of the following phospholipid movements is active (requires energy)?
A. lateral
B. rotation
C. flip-flop
D. A & B
E. B & C
E. B&C
Which of the below are examples of filament proteins?
1) serotonin
2) raptin
3) porin
4) actin
4) Actin
The role of endosomes in the cell is?
1) degradation of protein and organelles
2) oxidation of toxic material
3) sorting of endocytosed material
4) transport of proteins to the plasma membrane
3) Sorting of Endocytosed material