BIO 360 Exam 1 – ASU Questions With Complete Solutions
2nd Messenger Correct Answers - cAMP, IP3, DAG
- alter function of specific cellular proteins
- change via change in protein phosphorylation
3 types of local communication Correct Answers -Jap junctions
-Contact - dependent signals
-Chemicals diffuse thru extracellular fluid to act on close by
cells
Alfred G. Gilman / Martin Rodbell Correct Answers - G
proteins and use in cell transduction
Antiport Correct Answers Transport 2 or more different
molecules in opposite directions
Antiport, Symport, Uniport Correct Answers - are membrane
bound proteins
- never create a continuous channel
autocrine Correct Answers acts on cell that secreted the signal
(itself)
Cholera and choloride channel Correct Answers 1. Cholera
toxin crosses plasma membrane and permanently activates G
protein. Actives adenylyl cyclase - produces cAMP from ATP.
cAMP actives chloride channel and chloride flows out of cell.
Other ions follow. Result in increase in osmotic pressure causes
water to flow out of cell - leading to dehydration
- protein targeted is facilitated diffusion
, Cholesterol - PM Correct Answers - aids structure and support
- polar head of cholesterol orients with polar head of PL
- makes lipid bilayer less deformable and decreases permeability
to small water-solute molecuels
Contact-dependent Signals Correct Answers -occur when
surface molecules on 1 cell membrane bind to surface molecules
on another
Cystic fibrosis Correct Answers mutation to chloride receptor
prevents chloride from leaving alveoli of lungs. Not enough
osmatic pressure for water to flow out of alveoli. Mucus of lungs
becomes thick and sufferer can drown
Cytoskeleton Correct Answers - cell shape
- internal organization
- intercellular transport
- assembly of cells into tisuses
- movement
Describe Sodium Potassium Pump Correct Answers 1. Na+
molecules from ICF bind and ATP bcm ADP + Pi
2.Na+ - K+ - ATPase is phosphylated by Pi from ATP and
changes it conformation
3. The 3 Na+ molecules are released into ECF
4. 2 K+ molecules from ECF bind to pump
5. The Pi is released and pump changes its conformation again
and K+ is released into ICF
ECF Correct Answers - 1/3 total body water volume
2nd Messenger Correct Answers - cAMP, IP3, DAG
- alter function of specific cellular proteins
- change via change in protein phosphorylation
3 types of local communication Correct Answers -Jap junctions
-Contact - dependent signals
-Chemicals diffuse thru extracellular fluid to act on close by
cells
Alfred G. Gilman / Martin Rodbell Correct Answers - G
proteins and use in cell transduction
Antiport Correct Answers Transport 2 or more different
molecules in opposite directions
Antiport, Symport, Uniport Correct Answers - are membrane
bound proteins
- never create a continuous channel
autocrine Correct Answers acts on cell that secreted the signal
(itself)
Cholera and choloride channel Correct Answers 1. Cholera
toxin crosses plasma membrane and permanently activates G
protein. Actives adenylyl cyclase - produces cAMP from ATP.
cAMP actives chloride channel and chloride flows out of cell.
Other ions follow. Result in increase in osmotic pressure causes
water to flow out of cell - leading to dehydration
- protein targeted is facilitated diffusion
, Cholesterol - PM Correct Answers - aids structure and support
- polar head of cholesterol orients with polar head of PL
- makes lipid bilayer less deformable and decreases permeability
to small water-solute molecuels
Contact-dependent Signals Correct Answers -occur when
surface molecules on 1 cell membrane bind to surface molecules
on another
Cystic fibrosis Correct Answers mutation to chloride receptor
prevents chloride from leaving alveoli of lungs. Not enough
osmatic pressure for water to flow out of alveoli. Mucus of lungs
becomes thick and sufferer can drown
Cytoskeleton Correct Answers - cell shape
- internal organization
- intercellular transport
- assembly of cells into tisuses
- movement
Describe Sodium Potassium Pump Correct Answers 1. Na+
molecules from ICF bind and ATP bcm ADP + Pi
2.Na+ - K+ - ATPase is phosphylated by Pi from ATP and
changes it conformation
3. The 3 Na+ molecules are released into ECF
4. 2 K+ molecules from ECF bind to pump
5. The Pi is released and pump changes its conformation again
and K+ is released into ICF
ECF Correct Answers - 1/3 total body water volume
