Cell membranes
Example lecture · slide 1
The phospholipid bilayer is the basic structure of the cell membrane.
The hydrophilic heads face the aqueous environments. Their hydrophobic tails face inward, away from water.
Cards for the lectures
your deck doesn’t cover.
Board decks cover the boards. Your exams come from your instructors’ slides. Upload this week’s PDF or PowerPoint and Passal drafts flashcards and a quiz, each answer quoted word for word from the slide, with reviews planned around your exam date.
This week’s lecture,
ready to review.
Passal reads the text of your lecture and drafts cards from it. You keep, edit or trash each one. Today tells you what to review next.
From slide to review.
How a membrane keeps its balance
Lecture notes · Membrane transport
Simple diffusion moves molecules down their concentration gradient without requiring cellular energy.
The phospholipid bilayer creates the boundary. Its hydrophilic heads face the aqueous environments; its hydrophobic tails face inward.
Simple diffusionQuoted in a card · slide 2
Every answer quotes its line, or there’s no card
Each drafted card and quiz answer is an exact quote from your file, one tap away. If Passal can’t quote it word for word, it doesn’t make the card. Edit a card and Passal marks it, because the quote no longer matches.
When it’s not in your lecture, Passal says so
Ask about a card and Passal shows the nearby passages from your lecture, or tells you plainly: “Not in this lecture.” It doesn’t fill the gap with something that sounds right.
Bring your own AI. Passal checks its work.
Connect the ChatGPT or Claude you already use, or paste from any chatbot, to draft more cards. Passal throws out any card whose quote isn’t word for word in your lecture.
Spaced repetition plans your reviews around your exam date. Import your Anki cards into a course to keep them alongside.
Between the layersA study in layers.
Keep the source
in sight.
A card you can’t check is a card you can’t trust. Every Passal card keeps the line it came from, so checking it takes one tap, not a search through the slides.
Read it.
Recall it.
Read a passage, recall the missing word, and check your answer.
The phospholipid bilayer is the basic structure of the cell membrane.
Read the sentence, then test your recall.
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