A molecular biologist figures out how cells work by studying DNA, RNA, and proteins. You will learn it the way the job is done: first the core ideas (the central dogma, gene regulation), then the bench skills (pipetting, PCR, cloning, gels, qPCR, Western blots), then the data and design skills (stats, R or Python, experimental controls) that make you hireable. A bachelor's degree gets you into technician and research associate jobs. A PhD, usually followed by a postdoc, is the usual route to leading your own projects. Every stage below has free resources and a project you can show to an employ
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 3 · about 12 weeks
Understand how genes and cells work and perform basic lab calculations and techniques with confidence.
Cell and molecular biology core concepts
Every experiment you design asks a question about DNA, RNA, or protein. If you know the central dogma (DNA to RNA to protein), replication, transcription, translation, and gene regulation, you can predict what an experiment should show and spot when it goes wrong.
Lab math, solutions and buffers
Most bench errors come from arithmetic. You must prepare a 10X buffer, dilute a stock, or work out a master mix correctly every time, or the experiment fails and you will not know why.
Core bench techniques and lab safety
Pipetting, sterile technique, and safe handling are the base of every protocol. Poor pipetting gives noisy data, and poor safety habits hurt people and ruin samples.
Keeping a lab notebook and basic data handling
Accurate records are a core task of the job. If another scientist cannot repeat what you did from your notes, the result is not trustworthy.
Reading scientific papers
You will read papers every week for your whole career to find methods and judge claims.
Then 2 more stages (about 68 weeks in all) with lessons, drills, projects, 6 interview questions with strong answers and free resources.