Podcast
Questions and Answers
What is the defining characteristic of an action potential?
What is the defining characteristic of an action potential?
- Slow hyperpolarization
- Slow repolarization
- Rapid depolarization followed by repolarization (correct)
- Gradual depolarization
Which type of cells exhibit excitability?
Which type of cells exhibit excitability?
- Skin cells
- Blood cells
- Neurons and muscle cells (correct)
- Bone cells
What is the role of a stimulus in altering membrane potential?
What is the role of a stimulus in altering membrane potential?
- Maintaining membrane stability
- Inducing rapid changes in membrane polarization (correct)
- Preventing action potentials
- Promoting hyperpolarization
What happens if a stimulation surpasses the excitability threshold?
What happens if a stimulation surpasses the excitability threshold?
Where does the excitability threshold typically lie for muscle and nerve cells?
Where does the excitability threshold typically lie for muscle and nerve cells?
Which type of current brings the membrane potential closer to the excitability threshold?
Which type of current brings the membrane potential closer to the excitability threshold?
What is the primary function of potassium channels during an action potential?
What is the primary function of potassium channels during an action potential?
Which term describes an influx of negative charges that depolarize the cell?
Which term describes an influx of negative charges that depolarize the cell?
At what membrane potential does an action potential become inevitable?
At what membrane potential does an action potential become inevitable?
What does the term 'androecium' refer to?
What does the term 'androecium' refer to?
In the context of stamens, what is meant by 'meristemonous'?
In the context of stamens, what is meant by 'meristemonous'?
Which term describes the phenomenon when stamen pieces are overlapping?
Which term describes the phenomenon when stamen pieces are overlapping?
What is the term for the regrouping of stamens in androecium?
What is the term for the regrouping of stamens in androecium?
In which type of androecium are stamens completely fused into a single structure?
In which type of androecium are stamens completely fused into a single structure?
What is the term for a type of androecium where stamens are free and do not fuse at any point?
What is the term for a type of androecium where stamens are free and do not fuse at any point?
Which term describes the arrangement of flower pieces as one piece covering two pieces that are overlapping?
Which term describes the arrangement of flower pieces as one piece covering two pieces that are overlapping?
In botanical terms, what is 'quincuncial' preflowering?
In botanical terms, what is 'quincuncial' preflowering?
'Descendingly imbricate' is related to which specific part of a zygomorphic flower according to the text?
'Descendingly imbricate' is related to which specific part of a zygomorphic flower according to the text?
'Pollen grain is produced inside pollen sacs' refers to which part of the male reproductive system of a flower?
'Pollen grain is produced inside pollen sacs' refers to which part of the male reproductive system of a flower?
