Neurons, nervous system

Question 1

Membrane potentials

Answer 1

Membrane potentials
- Unicellular organisms maintain a membrane potential (all living cells
do)

Question 2

Membrane potentials result when

Answer 2

Membrane potentials result when there is an imbalance of ions inside
vs. outside the cell

Question 3

Active transport pumps responsible for

Answer 3

1. Active transport pumps that pump out hydrogen ions are responsible for this change in ion concentration

Answer 4

2. This results in a charge dierence across the membrane