An AI biology tutor for cells, genetics and the human body

The tutor starts with the big picture, then checks you've got it before adding detail:

$6\text{CO}_2 + 6\text{H}_2\text{O} \xrightarrow{\text{light, chlorophyll}} \text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2$

Tutor: Plants use light energy to turn carbon dioxide and water into glucose, releasing oxygen. Where in the cell does this happen?

Student: The mitochondria?

Tutor: Close, but mitochondria are where respiration happens. Photosynthesis happens in the chloroplasts, which contain the green pigment chlorophyll. Why do you think leaves are thin and flat?

Mixing up photosynthesis and respiration is one of the most common biology mistakes, so the tutor targets it directly.

Two parents are both heterozygous ($Aa$) for a gene where $A$ (dominant) gives brown eyes and $a$ (recessive) gives blue eyes. What are the chances for their children?

• Genotypes: $\frac{1}{4}\ AA$, $\frac{1}{2}\ Aa$, $\frac{1}{4}\ aa$.
• Phenotypes: 3 brown : 1 blue, so a 25% chance of blue eyes for each child.

The tutor asks you to fill in the square yourself, then to explain why $Aa$ gives brown eyes.

• Cells: animal and plant cells, specialised cells, microscopy, transport across membranes.
• Cell division and genetics: mitosis and meiosis, DNA and genes, inheritance, variation, evolution.
• Organisms: the digestive, circulatory and respiratory systems, enzymes, the nervous and hormonal systems.
• Plants: photosynthesis, transpiration, plant structure.
• Health: disease and the immune system, vaccines, drugs.
• Ecology: food chains and webs, cycles of matter, biodiversity, human impact on ecosystems.

Biology tests reward precise recall. The most effective way to remember is to test yourself, then come back to it over several days (see our guide on how to study for a test). Ask the tutor to quiz you on a topic: it asks one question at a time, marks your answer, and comes back later to anything you got wrong. It also remembers which topics you found tricky.

Long-answer questions often lose marks for vague wording. Paste your answer and the tutor points out where to be more precise, for example "the enzyme's active site changes shape" rather than "the enzyme dies". It explains why the precise version earns the mark, so you can do it yourself next time.

AI tutors can make mistakes, so compare important facts with your textbook or teacher, especially details that differ between courses. The tutor can't watch practical work; follow your teacher's instructions for anything in the lab. We don't claim to cover any exam board's full specification: tell the tutor your course and it will use its terms.