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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
All rights reserved © 2025/ 2026 |
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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
All rights reserved © 2025/ 2026 |
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
All rights reserved © 2025/ 2026 |
, Page |2
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
All rights reserved © 2025/ 2026 |
