Turn your PDF into a practice quiz
Generate questions from your PDFs, lecture slides and notes. Test your understanding, check your answers and read the explanations.
PDF to quiz: try an example
Open the source PDFCell membranes and transport
0 of 4 answered
These 4 questions were generated by ChatEDU from our original two-page biology handout. This demo uses saved output; your answers reset when you reload.
View the answer key and explanations
A cell membrane has no transport proteins for a particular molecule. The molecule is small and nonpolar, and its concentration is higher outside the cell than inside. Which outcome is best supported by the notes?
Answer: The molecule will move into the cell by simple diffusion.
Small nonpolar molecules can cross the phospholipid bilayer relatively easily. Because the molecule is more concentrated outside, diffusion produces net movement into the cell, down its concentration gradient. The absence of a transport protein does not prevent this kind of simple diffusion.
A channel allows an ion to move down its electrochemical gradient. ATP-dependent pumps have stopped, but the gradient has not yet dissipated. Which prediction follows from the notes?
Answer: The ion may continue moving through the channel while its gradient lasts.
Movement through a channel down an electrochemical gradient is facilitated diffusion, which is passive even though a protein is involved. Existing gradients do not disappear instantly when ATP production stops, so this movement may continue while the gradient lasts. ATP-dependent pumping, in contrast, cannot be sustained.
A sodium-glucose cotransporter moves sodium down its gradient while driving glucose against its gradient. The transporter does not directly hydrolyze ATP. Which explanation best accounts for how glucose can move uphill?
Answer: Energy stored in the sodium gradient drives glucose movement against its gradient.
This is secondary active transport: sodium moving down its gradient supplies the energy that drives glucose against its gradient. The cotransporter itself does not directly use ATP, but energy-consuming processes are needed to maintain the sodium gradient.
A selectively permeable membrane separates two sugar solutions. Sugar cannot cross, but water can. The solution on side A is more concentrated in sugar than the solution on side B. What is the expected net movement of water?
Answer: From side B toward side A.
Because sugar is nonpenetrating in this setup, the higher sugar concentration on side A draws net water movement toward that side by osmosis. The prediction depends on the stated permeability: water can cross, while sugar cannot.
How to make a quiz from a PDF
- 01
Upload your material
Create a free account, then upload your PDF to a course. You can also upload lecture slides or paste your notes.
- 02
Generate your quiz
Open the source and choose Quiz. Select your question types, then generate questions from that material.
- 03
Practice and review
Answer the questions and read the explanations. Return to your original material to review the concepts you missed.
A practice test generator for your class materials
PDF readings and handouts
Turn the topics in a PDF into practice questions. Keep the original file available to check answers and revisit explanations.
Notes to quiz
Use pasted lecture notes or a text, Markdown or Word file to practice the definitions and concepts you covered in class.
Lecture slides
Upload PowerPoint slides or a PDF slide deck. Choose question types that help you practice the ideas in your material.
PDF to quiz questions
See plans and limitsCan I turn a PDF into a quiz for free?
Yes. A free ChatEDU account includes 30 practice questions per month and 3 uploads. The allowance counts questions, not whole quizzes. The upload allowance resets 30 days after you reach its limit. An account is required to generate your own quizzes; this public example is available without one.
Can I turn my notes into a quiz?
Yes. Paste your lecture notes or upload a text, Markdown or Word file. You can also use PDFs, PowerPoint slides and supported images. Wait for your source to be ready, then open it and choose Quiz. Each generation uses one source.
What question types can I generate?
ChatEDU supports multiple-choice, true/false, fill-in-the-blank, matching, short-answer, long-form and coding questions. Choose the types that fit your material. The public biology example uses multiple-choice questions.
Will the practice test match my real exam?
The questions are generated from the material you provide. They cannot predict what your instructor will ask or guarantee complete coverage. Use them to check understanding, then compare your preparation with your syllabus and instructor guidance.
Can I check the answers and explanations?
Yes. Review the answer explanations and compare important details with your original material. AI can make mistakes or miss context. The sample quiz includes its original PDF and an expandable answer key so you can inspect both.