Latest Edition · NEET 2026
Master NEET Biology
through active recall.
7,000+ MCQs covering every NCERT line, figure and data point. AI Doubt Solver, smart tests and 10 years of PYQs — in one focused app.
Chapter 8
Cell — The Unit of Life
Active Recall · Diagram
Which organelle is the site of aerobic respiration in eukaryotic cells?
Justification
Mitochondria house the Krebs cycle and ETS, making them the powerhouse of aerobic respiration. (NCERT XI, Ch 8, pg 134)
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The Codex method
Every NCERT line, transformed into a question.
Reading NCERT five times doesn't work. Active recall does. Watch a textbook paragraph become a NEET-style MCQ.
Mitochondrion
Mitochondria appear filamentous or granular structures, often varying in shape and size. They are the sites of aerobic respiration. The mitochondrion is the powerhouse of the cell — producing cellular energy in the form of ATP through the Krebs cycle and the electron transport system.
Which of the following correctly describes the mitochondrion?
The problem
Re-reading NCERT five times doesn't make it stick.
Every NEET aspirant knows NCERT Biology is the foundation. Yet passive highlighting and endless rereads leave you wondering: did I actually retain anything?
Complete NCERT Coverage
Every line, diagram, table and scientist biography in NCERT XI & XII — turned into a question. Nothing is missed.
Active Recall, Not Re-reading
Train your brain to retrieve facts instead of recognising them. The proven cognitive science behind every top NEET rank.
NEET Mastery (HOTS)
9 advanced question formats — Assertion–Reason, Case-based, Data Anomaly, Diagnostic Pathway — modelled on recent NEET papers.
Inside the app
Six tools, one focused workflow.
Every NCERT line is a question.
Active recall sections walk you line-by-line through each chapter. Diagram & data MCQs train you on every figure. Intra-chapter HOTS connect the dots.
- Text-based · Diagram & Data · Integrative
- Topic-level filters and progress
- Tap-to-bookmark for revision
Chapter 8
Cell — The Unit of Life
Custom, Codex and Mock tests.
Build a test on any chapters, categories or sources. Save it, share it via a 6-character code, pause and resume on the same day. Codex curates the toughest sets.
- Pause & resume — your timer is preserved
- Share with friends via codes like NC4X2R
- NEET-style +4 / −1 scoring
Custom Test
Cells + Biomolecules
Questions
30
Timer
45m
Category
Recall + PYQ
Source
Unattempted
In progress
12 / 30
28:14 left
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- 20 daily / 100 weekly questions
Why is the mitochondrion called a semi-autonomous organelle?
Because it has its own circular DNA and ribosomes, allowing it to synthesise some of its own proteins — though most are still imported from the cytoplasm.
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Breathing & Exchange of Gases
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Bookmarked
In which phase of meiosis does crossing over occur?
Cell Cycle · pg 444
Which plant family shows polyadelphous stamens?
Morphology · pg 251
Identify the deficiency causing Pellagra.
Biomolecules · pg 412
Dr. Shiv Patel
Founder & author
About the founder
Built by someone who's been in your seat.
NEET Codex is the work of Dr. Shiv Patel — MBBS graduate from Government Medical College, Surat. He scored AIR 267 with 690/720 in NEET 2020 and cleared both stages of KVPY twice during school. Every question, every justification and every workflow in the app reflects what worked in his own preparation.
MBBS
GMC Surat
AIR 267
NEET 2020 · 690/720
KVPY 2×
Both stages cleared
Voices from the beta
Built with aspirants, for aspirants.
Placeholder quotes — real testimonials will replace these post-launch.
“Finally an app that turns NCERT into actual practice. The justifications behind every answer save me a re-read every time.”
Riya · NEET 2026 aspirant
Surat
“The Doubt Solver feels like a senior pointing me to the exact page in NCERT. I trust it more than any random YouTube channel.”
Aarav · NEET 2026 aspirant
Pune
“Saved tests with share codes are genius. My study group runs a different test every Sunday using a single code.”
Sneha · NEET 2027 aspirant
Ahmedabad
“Chapter health flags showed me Biomolecules was my weakest spot — I would have ignored it otherwise.”
Kabir · NEET 2026 aspirant
Jaipur
- Is NEET Codex free?
- Yes — Chapters 1 and 2 are completely free, forever. Premium unlocks the remaining chapters and AI tools, managed inside the app.
- Is it affiliated with NTA or NCERT?
- No. NEET Codex is an independent educational initiative. Content is created based on concepts derived from NCERT textbooks.
- How does the AI Doubt Solver work?
- It searches NCERT itself using retrieval-augmented generation and answers with citations to the exact chapter, topic and page.
- Will Physics and Chemistry be added?
- Yes — NEET Codex began with Biology and is expanding to Physics and Chemistry next.
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