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Bio 219 Exam 2 – Questions And Answers (100% Accurate)
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Bio 219 Exam 2 – Questions And Answers (100% Accurate)
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Bio 219 Exam 2 – Questions And Answers (100%Accurate)
Structure of transmembrane protein used to get signal from outside to inside
Right Ans - secondary
With cell signalling, lots of ___________ is used Right Ans - allostery
In cell signaling allostery allows for Right Ans - things with low binding
affinity to bind and make products
Proteins are the product of Right Ans - translation
MRNA is built in _______________ and used in _________________ Right Ans -
nucleus, cytoplasm
MRNA built from Right Ans - transcription of DNA
transcription is from Right Ans - 3'-5'
translation is from Right Ans - 5'-3'
autocrine signaling Right Ans - cells send signals to itself
paracrine signaling Right Ans - sending signals to nearby cells
juxtacrine signaling Right Ans - send directly from one cell to another
through junctions
endocrine signaling Right Ans - signals travel long distances through
bloodstream
Anti-apoptoic Right Ans - cells can survive and carry out functions
growth factors Right Ans - signals that tell cells to keep growing or dividing
differentiate Right Ans - signals tell cells to change identity
, apoptosis Right Ans - cell death
signals that are molecules are ___________ Right Ans - ligands
cell signaling requires what 2 things Right Ans - signal and receptor
ligands Right Ans - bind to receptors and undergo allostery
specificity of ligands Right Ans - highly specific (non-covalent interactions)
b/c of protein-protein interactions
GTP Right Ans - regulates proteins and activates g-proteins through
allostery
when are g-proteins "on" Right Ans - when bound to GTP
when are g-proteins "off" Right Ans - when bound to GDP
GTP gets ______________ back to GDP Right Ans - hydrolyzed
GEF Right Ans - assists GDP leaving and GTP entering
GTP hydrolysis is an _____________process Right Ans - exergonic
ATP and GTP serve as Right Ans - intermediates
ion-channel coupled receptors Right Ans - open/close ion channels
provides ions for cell functions
changes membrane potential
g-protein coupled receptor Right Ans - work with intracellular g-protein to
transmit signal
receptor tyrosine kinases Right Ans - phosphorylate tyrosines in substrate
proteins
domains of tyrosine phyosphorlation Right Ans - extracellular ligand
binding
transmembrane
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