High School Biology
Gene Expression
Quiz

What is the free Gene Expression Biology Quiz?

The Gene Expression Biology Quiz is a free, unofficial web app for high school biology review.

It uses original 4-choice questions and original diagrams to help students practice DNA replication, transcription, translation, codons, protein synthesis, and gene regulation.

Original course structure

The questions are newly written for this app. The course order is designed for review from basic genetic information to applied data-reading questions.

• 10-question basic mix
• 20-question DNA and gene basics
• 20-question DNA replication
• 20-question transcription and RNA
• 20-question translation and protein synthesis
• 20-question codons and genetic code
• 20-question prokaryotic gene regulation
• 30-question eukaryotic gene regulation
• 50-question original data and diagram questions
• 100-question high school biology review mix

Dynamic hints with original diagrams

Hints change according to the current question. They include original SVG diagrams such as DNA base pairing, replication direction, transcription flow, mRNA codons, ribosome movement, and gene regulation switches.

Challenge history, best records, rankings, and often missed questions are also available for repeated review.

How to use this quiz for review

Start with the basic mix if you want to check the whole unit quickly. If a specific topic feels difficult, choose a focused course such as DNA replication, transcription and RNA, translation and protein synthesis, codons, or gene regulation.

Each question is short enough for a quick study session, but the ranking and My Page records also make it easy to repeat the same unit and notice which topics you often miss.

What the visual hints help with

The hints are designed to show the idea behind the question, not just the answer. For example, sequence questions show strand direction and base pairing, translation questions show codon and anticodon pairing, and regulation questions show how transcription can become easier or harder.

This makes the app useful for students reviewing alone, as well as teachers or guardians who want a simple way to check whether key terms are connected correctly.

Unofficial site notice and rights policy

This site is not an official site of the Ministry of Education, the National Center for University Entrance Examinations, any school, publisher, or cram school.

This site has not been authorized, certified, supervised, or endorsed by any organization or company.

The questions published here are not reproduced from textbooks, reference books, workbooks, the Common Test, university entrance examinations, mock examinations, or school handouts.

Questions, answer choices, explanations, and diagrams are created independently for this site.

Please check official websites for formal curriculum information, entrance examination information, and textbook information.

If there is any rights-related issue, please contact us. Contact form

Official reference link: High School Curriculum Guidelines Commentary, MEXT