Podcast
Questions and Answers
What is depolarization?
What is depolarization?
- When the inside of the cell becomes more negative
- When the outside of the cell becomes more negative
- When the inside of the cell becomes less negative (correct)
- When the outside of the cell becomes less negative
What is depolarization?
What is depolarization?
- When the inside of the cell becomes more negative
- When the outside of the cell becomes more negative
- When the inside of the cell becomes less negative (correct)
- When the outside of the cell becomes less negative
Which of the following is a macronutrient essential for microbial growth?
Which of the following is a macronutrient essential for microbial growth?
- Sodium (correct)
- Iron
- Copper
- Zinc
What are graded potentials?
What are graded potentials?
What are graded potentials?
What are graded potentials?
What is the term used to describe the amount of water available for microbial growth?
What is the term used to describe the amount of water available for microbial growth?
What produces depolarizing graded potentials?
What produces depolarizing graded potentials?
What produces hyperpolarizing graded potentials?
What produces hyperpolarizing graded potentials?
Which type of solution affects water movement and can have an impact on microbial growth?
Which type of solution affects water movement and can have an impact on microbial growth?
What is the threshold?
What is the threshold?
What is the threshold for an action potential?
What is the threshold for an action potential?
What is the depolarizing phase of an action potential?
What is the depolarizing phase of an action potential?
What is the depolarizing phase?
What is the depolarizing phase?
What is repolarization?
What is repolarization?
What is repolarization?
What is repolarization?
What is hyperpolarization?
What is hyperpolarization?
What is the undershoot in an action potential called?
What is the undershoot in an action potential called?
Study Notes
- Excitable cells are polarized with a negative inside and different outside.
- Depolarization is when the inside of the cell becomes less negative.
- Graded potentials are small, transient changes in membrane potential proportional to the stimulus.
- Depolarizing graded potentials are produced by excitatory stimuli and hyperpolarizing graded potentials are produced by inhibitory stimuli.
- Action potentials are large, fast changes in membrane potential elicited by a large excitatory stimulus.
- Threshold is the value that the depolarizing graded potential must reach to trigger an action potential.
- The depolarizing phase is between threshold and the peak of the action potential.
- Repolarization is when the membrane potential returns to the resting state after an action potential.
- Hyperpolarization is when the inside of the cell becomes more negative than the resting state.
- The undershoot in the action potential is called the hyperpolarizing phase.
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Description
"Test your knowledge of neuronal physiology with our Excitable Cells and Action Potentials Quiz! Explore the concepts of polarization, depolarization, graded potentials, and action potentials, as well as the different phases of an action potential. Learn about threshold, repolarization, and hyperpolarization, and understand how these processes contribute to the functioning of the nervous system. Put your understanding to the test and see how much you know about the electrical signals that govern our bodies!"
