Steroids are derived from cholesterol.

The resting membrane potential is closest to the equilibrium potential for ________.

Proteins that are partially embedded on one side of the plasma membrane are ________.

What structures are used for direct cell to cell signaling?

Which two muscles of the eye allow one to look straight up from the primary position?

Choose the correct description of the Na+/K+ pump.

What type of cell signaling uses neurotransmitters to innervate its target organ?

The pH of a solution is directly proportional to the hydrogen ion concentration of the solution.

What is the feature marked by the yellow dot on the image below? Note: it is also outlined by a red circle to help you locate it.

Calculate the moles of HBr if `x` mL of `y` M of it is used in this reaction. Report you answer with 4 places after the decimal.