Turn a PowerPoint into flashcards that cite the slide.

Every card on three more of the deck’s concepts

Hemle wrote these 12 cards from the same deck on 28 October 2026. They are its cards on three of the 24 concepts it found, every card for each, word for word, with the slides they cite. Answer each one before you open it.

Made in Hemle. Every card on these three concepts is here, word for word, and the slides are the ones each card cites. From the Chapter 16: The Nervous System slides of Concepts of Biology – 1st Canadian Edition by Charles Molnar and Jane Gair (BCcampus), adapted from OpenStax’s Biology and used under a CC BY 4.0 licence. Credits for others’ figures are on their slides. We uploaded the deck unchanged; the cards and quiz were made by Hemle’s AI, and the authors don’t endorse Hemle.

A whole quiz from the same slides

Hemle wrote these five questions on one concept, the phases of the action potential, on 28 October 2026. Under each one: the answer, Hemle’s explanation, and the sentence on the slide it rests on. Hemle’s explanations call a slide a page: page 10 is slide 10. For question 3 the app didn’t find the sentence, so there is no quote.

1. Question 1 of 5

   Which state of the voltage-gated Na⁺ channel is characterized by an inability to open in response to a new signal for a brief period following activation?

   • AClosed at resting potential
   • BInactivated
   • CHyperpolarized
   • DOpen
   Show answerHide answer

   Answer B: Inactivated

   Page 10 describes the voltage-gated Na⁺ channel as inactivated for a brief period after activation, during which it will no longer open in response to a new signal. In contrast, at the resting potential, the channel is simply closed and ready to respond. Ask yourself: What physiological state prevents a channel from opening immediately after firing?

   “After activation, they become inactivated for a brief period and will no longer open in response to a signal.”

   SourceSlide 10slide 10

2. Question 2 of 5

   During the generation of an action potential, which event directly produces depolarization of the neuronal membrane?

   • ANa⁺ entering the cell
   • BK⁺ channels opening at peak potential
   • CNa⁺ leaving the cell
   • DK⁺ entering the cell
   Show answerHide answer

   Answer A: Na⁺ entering the cell

   Page 11 explains that a nerve impulse causes Na⁺ to enter the cell, which results in depolarization. Depolarization lessens the charge across the membrane. Ask yourself: Which ion moves into the cell to drive the membrane potential toward positive values?

   “A nerve impulse causes Na+ to enter the cell, resulting in (b) depolarization.”

   SourceSlide 11slide 11

3. Question 3 of 5

   What changes occur in ion channel activity precisely at the peak of the action potential (+30 mV)?

   • AK⁺ channels open while Na⁺ channels close
   • BBoth Na⁺ and K⁺ channels open simultaneously
   • CThe Na⁺/K⁺ transporter stops pumping entirely
   • DNa⁺ channels open wider while K⁺ channels close
   Show answerHide answer

   Answer A: K⁺ channels open while Na⁺ channels close

   Page 12 states that at step 3 (peak action potential), K⁺ channels open and K⁺ begins to leave the cell, while at the same time Na⁺ channels close. This initiates repolarization of the membrane. Ask yourself: What simultaneous channel events reverse the rising phase of the action potential?

   SourceSlide 12slide 12

4. Question 4 of 5

   A researcher applies a supra-threshold depolarizing stimulus to an axon while its membrane is in step 4 (hyperpolarization). What will be the observed response of the axon?

   • AThe axon will immediately produce an action potential of twice the normal amplitude
   • BThe membrane will skip repolarization and maintain +30 mV indefinitely
   • CThe axon cannot fire an action potential because it is in a refractory period
   • DThe voltage-gated K⁺ channels will immediately open further to depolarize the cell
   Show answerHide answer

   Answer C: The axon cannot fire an action potential because it is in a refractory period

   Page 12 explains that during step 4, the hyperpolarized membrane is in a refractory period and cannot fire. Page 10 also notes that after activation, voltage-gated channels are inactivated and will not open in response to a signal. Ask yourself: Why does a neuron fail to generate a new impulse during the hyperpolarization phase?

   “The hyperpolarized membrane is in a refractory period and cannot fire.”

   SourceSlide 10slide 10Slide 12slide 12

5. Question 5 of 5

   Following hyperpolarization, which mechanism restores the membrane to its baseline resting potential (step 5)?

   • AContinuous passive diffusion of K⁺ ions out of the cytoplasm through open voltage-gated channels
   • BRapid opening of voltage-gated Na⁺ channels without any active transport
   • CK⁺ channels close and the Na⁺/K⁺ transporter restores the resting potential
   • DDirect influx of negative chloride ions to neutralize intracellular cations
   Show answerHide answer

   Answer C: K⁺ channels close and the Na⁺/K⁺ transporter restores the resting potential

   Page 12 indicates that in step 5, the K⁺ channels close and the Na⁺/K⁺ transporter restores the resting potential. This transporter utilizes ATP to reset the ionic gradients. Ask yourself: What specific transporter re-establishes resting ionic balance once ion channels shut?

   “(5) The K+ channels close and the Na+/K+ transporter restores the resting potential.”

   SourceSlide 11slide 11Slide 12slide 12

Made in Hemle. The questions, answers, explanations and quoted sentences are word for word, from the quiz as submitted. From the Chapter 16: The Nervous System slides of Concepts of Biology – 1st Canadian Edition by Charles Molnar and Jane Gair (BCcampus), adapted from OpenStax’s Biology and used under a CC BY 4.0 licence. Credits for others’ figures are on their slides. We uploaded the deck unchanged; the cards and quiz were made by Hemle’s AI, and the authors don’t endorse Hemle.

How Hemle compares

What each tool’s own pages say about turning PowerPoint slides into flashcards and a quiz, checked on 28 October 2026.

Sources, each company’s own pages, checked on 28 October 2026: Quizgecko (flashcard generator, PowerPoint to quiz); SlideSpeak (flashcards from PowerPoint, quiz from PowerPoint). “Not stated” means those pages don’t say; the tool may still do it.