Human Physiology Study Guide Exam 2

Front 1

G proteins are used by polar or nonvolatile regulatory molecules?

Back 1

Polar

Front 2

G proteins move within plasma membrane to activate either a ________ protein or an _____ also in plasma membrane

Back 2

Channel, effector

Front 3

What is a second messenger system and which regulatory molecules use this?

Back 3

A second messenger system is when a regularatory molecule never enters the cell but activates an enzyme that produces a second messenger or a channel protein that serves as a second messenger. Polar or hormones use this

Front 4

The negative pole of a resting cell is in the ______ while the positive is in the _______. The difference is measured in___

Back 4

Inside, outside, mV

Front 5

The ions in highest concentration outside the cell are__,___,__

Back 5

Na+,Cl-, Ca++

Front 6

The ions in highest concentration inside the cell are____, which are attracted to _____ _______

Back 6

K+, fixed anions