Processes explained in order
Photosynthesis and respiration, mitosis and meiosis, the cardiac cycle, immunity, the nitrogen cycle — step by step, with the reason behind each stage.
Every subjectone subscriptionFrom $9.99per month
An AI biology tutor for the diagram-heavy half of the course
Cells, genetics, human systems, ecology — biology rewards understanding processes, not memorising sentences. Astra explains the sequence, draws the connections and drills the details until they stay put.
- Lecture notes & PDFs
- Photos of your notes
- Your exam date
- Your target grade
- Slides & textbooks
- Links & articles
What Astra AI does for you
One subscription turns your own material into the lessons, practice and mock exams this page describes.
Genetics without the guesswork
Punnett squares, DNA structure and replication, protein synthesis, mutations and inheritance patterns, worked through with you rather than shown to you.
Diagrams, labels and connections
Describe a diagram or scan one, and Astra walks the labels and pathways — what goes in, what comes out, and where students usually mix things up.
Structure-to-function links · Compare-and-contrast tables · Marking-scheme vocabulary
Flashcards from your own notes
Drop in notes, drawings, slides or past papers and Astra turns them into decks with spaced repetition, so the vocabulary and sequences come back right before you would forget them.
Marked questions, real exam practice
Short-answer and multiple-choice questions built from your material, marked every time — including the command words examiners look for.
Exam-ready by your date
Set the exam date and get a topic-by-topic plan with graded mock papers across the whole syllabus, from cells to ecosystems.
How to get started
Bring the topic or the question
Type a question, scan a worksheet page or name the topic you are covering in class this week.
Understand the process
Astra explains the sequence, checks you can retell it and connects it to the topics it builds on.
Remember it with practice
Flashcards, marked questions and mock papers make sure it is still there a week later.
Frequently asked questions
Cell biology, genetics, human physiology, plant biology, ecology, evolution and microbiology across school and university syllabuses — including the diagram- and process-heavy topics most students find hardest.
Yes. Astra turns your notes into flashcards with spaced repetition, so definitions, sequences and labelling come back for review right before you would forget them.
It does. Astra builds short-answer and multiple-choice questions from your own material and marks them, including the command words and structure examiners look for.
Yes. Scan the diagram or describe it in words — Astra walks through the labels, the pathway and where students typically mix things up.
One subscription covers biology and every other subject: from $9.99 per month, with annual billing about 17% cheaper than paying monthly.
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One subscription covers biology, every other subject and the full study toolkit.
- Every subject in one plan
- Built from your own notes and past papers
- 2 grades higher, or your money back