Laboratory Research Assistant (Molecular Biology) practice interview
Sample preparation, contamination control, basic molecular techniques, laboratory safety and traceable experimental records. Practise the 5 questions interviewers ask for this role with follow-ups. Paid plans add scored feedback on every answer.
Free with an Intaviu account: 320 credits a month, at 10 credits a minute of practice. Private: interview creators never see them.
- Junior
- 15 minutes
- 5 questions
- Scored feedback on paid plans
About the role
This interview covers the careful bench work expected of an entry-level molecular biology research assistant. The panel is looking for sound protocol habits, contamination control, safe working, honest treatment of uncertain results and records that allow another researcher to trace every sample.
How to prepare
- Revise accurate pipetting, dilution calculations, sample labelling and the purpose of positive and negative controls.
- Review how clean work areas and careful workflow reduce contamination in molecular experiments.
- Prepare to explain a practical experiment, including the controls, observations and limitations.
- Revise the response to spills, exposure risks and damaged or unlabelled samples.
- Practise describing how you record reagent details, protocol deviations and unexpected results.
Common mistakes
- Listing techniques without explaining the controls or precautions involved.
- Treating a questionable result as valid because it matches the expected outcome.
- Continuing with a sample whose identity or integrity cannot be confirmed.
- Hiding a spill, contamination event or deviation from the protocol.
What to expect
A real first-round interview
5 questions the way interviewers ask for this role, with follow-ups when an answer needs more.
Spoken, like the real thing
Speak your answers in your browser or the free desktop app, with live captions. You can ask the interviewer to repeat anything.
Scored on 5 areas
The things this interview weighs most. With a paid plan, your report shows how you did on each one.
A private report
On Plus, Pro and Premium: every answer scored, your strongest lines quoted and what to say differently next time. Interview creators never see it.
More education practice
Environmental Research Assistant
Environmental sampling, field records, data checks and safe investigation of pollution and ecosystem conditions.
EducationPro
ProLaboratory Manager (Analytical Chemistry)
Analytical method control, instrument reliability, laboratory safety, result investigations and team capacity planning.
EducationProSenior Research Scientist (Molecular Biology)
Experimental design, molecular assays, reproducibility, troubleshooting and scientific leadership in a research laboratory.