About this book

This is a free and open microbiology book. It runs 15 chapters, and it covers a full course. The first five chapters build the microbes themselves: who they are, how the lab sees them, how their cells are put together, and the groups worth knowing by name. Chapters 6 to 11 cover growth, genetics, the control of microbes, the drugs, and the way infection moves through a population. Chapters 12 to 14 are the immune system. Chapter 15 then walks the body system by system and names the usual causes of infection in each one.

What makes it different

Most of this microbiology is explained twice. Once in words, and once as something you can move. Every chapter carries six interactive lessons built right into the page. You run the Gram stain, time the decolorizer, dose a dish of bacteria and watch the resistant few take over, or drag a fever through one full cycle. The numbers and the drawing change together as you work.

The writing keeps the sentences short and the words everyday. The microbiology itself is not softened to match. Every organism, drug, test, and number stays exactly as it is, and each hard term gets a plain explanation the first time it shows up. Microbiology is mostly names, so the names are never skipped.

Each chapter also carries figures with their credit lines, comparison tables, short lists of key points, a glossary and a quiz with the reasoning shown.

How to work through a chapter

1. Read a section, then open its interactive. Do not skip past it. Move one control at a time and watch what follows.
2. Predict before you click. Say out loud what will happen when you raise the dose or cut a link in the chain. Then check. Being wrong here is cheap, and it teaches fast.
3. Say the tables out loud. Gram reaction, shape, and the test that tells two look-alikes apart. These are the facts that get asked.
4. Finish the chapter with its quiz, then run that chapter's fifty cards until the reason comes as easily as the answer.
5. Before an exam, work its study guide, then run the question bank and read every reason. A round of a game the night before is worth it.

One honest hour beats four distracted ones. If a chapter will not go in, leave it and come back the next day. This subject builds on itself, so a chapter that felt impossible often loosens once the next one makes sense.

How it runs

Every page here is a single file. Open it in any browser and it works. Nothing is fetched while you read, nothing is saved about you, and no account is needed. So it also runs offline, on a slow connection, or straight from a folder on a flash drive.

Chapters print cleanly too. A chapter or a study guide can go to paper or to a PDF from the browser.

Using and sharing it

Where to start

If you are new to it, open the contents and read chapter 1. If you would rather play first, the interactive lab lists all 90 lessons by chapter. The hub keeps everything in one place.