Examlex
Select all that occur during the plateau phase of an action potential on a cardiac muscle cell.
A) Calcium is entering the cell.
B) Potassium is exiting the cell.
C) Sodium is entering the cell.
D) Calcium is exiting the cell.
Homeostasis
The process by which living organisms regulate their internal environment to maintain a stable, constant condition.
Biological Molecules
Organic molecules essential for life, including carbohydrates, lipids, proteins, and nucleic acids.
Buffers
Substances that minimize changes in pH by absorbing or releasing hydrogen ions, thus maintaining a stable environment in solutions, especially in biological systems.
Hydrogen Bonds
Weak bonds between partially positive hydrogen atoms and partially negative atoms (like oxygen or nitrogen) in different molecules or within the same molecule.
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