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APHY 201 Midterm Questions and Correct Answers/ Latest Update / Already Graded

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APHY 201 Midterm Questions and Correct Answers/ Latest Update / Already Graded

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APHY 201 Midterm Questions and Correct
Answers/ Latest Update / Already Graded
All of the following use vesicles to move substances across cell
membranes except:

Ans: facilitated diffusion


An example of active transport:

Ans: movement of Na+/K+ across a membrane to maintain
transmembrane potential


Force that exactly opposes a given concentration gradient, and
therefore opposes the net/overall movement of water:

Ans: Osmotic equilibrium


Not true about cell membranes:

Ans: Regulates exchange of most proteins but is freely
permeable to proteins


Describe symporter:

Ans: Moves two molecules in the same direction across the
membrane

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How do NSAIDS work?

Ans: Inhibiting COX enzymes


The second messenger molecule CAMP is associate with the amplifier
enzyme:

Ans: Adenylyl cyclase


In basis signal transduction, the __ is the transducer:

Ans: intracellular signal molecules


During G-protein coupled messaging, what could be a secondary
messenger?

Ans: IP3


An example of a ligand

Ans: Epinephrine


The hyper-polarization phase of the action potential occurs because




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