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At which points on the diagram is the inactivation gate of the voltage-gated sodium channel open?

Presynaptic inhibition affects the firing rate of neurons by which of the following mechanisms?

True or false: In passive transport, a particle can move up its electrochemical gradient if it moves through symport.

True or false: The rough endoplasmic reticulum is involved in the process of synthesizing a peptide hormone to be secreted out of the cell.

The absolute refractory period continues until ________.

Is bronchoconstriction associated with an elevated sympathetic or parasympathetic nervous system activity? 

Where can thymine be found?

How is the intensity of a stimulus encoded during information transmittal to the central nervous system?

A cell has a total membrane potential of -70 mV. Cation A is found in both the ECF and ICF and has an equilibrium potential of +45 mV. Cation B is found in both the ECF and ICF and has an equilibrium potential of -85 mV. True or false: Both the electrical and chemical driving forces acting on Cation B are out of the cell. (0.5 pts.)

Where can ribose be found?