Discuss, in general terms, how a cell receives and processes information that lets it know what it should do to respond to external conditions.

The number of ________ions moved out of the cell by the sodium/ potassium ‘pump’ is ______, while the number of_____ions moved into the cell by the sodium/ potassium ‘pump’ is ____.

Describe ways a cell might terminate a signal pathway.

Generally, for a positive feedback arc to cause a change of a physiological variable, where must be the receptor? Multiple answers: Choose all of the relevant answers from the choices below. answer choices a)Intracellular fluid b)Intersitial fluid c)Extracellular fluid d)External environment (e.g., mother's nipple) e)Blood plasma   2)Which of the following is NOT true regarding negative feedback loops and homeostasis? answer choices a. Homeostatic control systems cannot maintain complete constancy of the internal environment b. The set point of some variable can be reset c. It is always possible for physiological variables to be maintained in a relatively constant manner using homeostatic control systems d. The stability of an internal environment variable is achieved by balancing inputs and outputs e. In negative feedback systems, a change in the variable being regulated brings about responses that tend to move the variable in a direction that is opposite to the…