Biotechnology: JAMB Biology Questions, Answers & Notes

What Biotechnology covers in the JAMB Biology syllabus

Biotechnology uses living organisms (or their products) to make useful things. Traditional biotechnology relies on fermentation by microorganisms — yeast for bread, brewing and alcohol; bacteria for yoghurt, cheese, vinegar and local foods like ogi, garri and ogiri. Modern biotechnology includes genetic engineering (transferring genes to make genetically modified organisms — e.g. bacteria that produce human insulin, and pest-resistant, high-yield crops), cloning (genetically identical copies), and tissue culture (many identical plants from a few cells). It also gives us antibiotics (penicillin from Penicillium), vaccines, biogas (methane) and sewage treatment. Concerns about GMOs include possible long-term effects and loss of biodiversity.

For Biotechnology, JAMB expects you to be able to:

• Define biotechnology and describe traditional uses (fermentation)
• Explain genetic engineering, GMOs, cloning and tissue culture
• State applications in medicine, agriculture, industry and the environment

Key facts & revision notes: Biotechnology

These are the recurring points our Biotechnology questions test — revise them until each feels automatic, then practise the questions above to lock them in.

• Biotechnology uses living organisms (or their products) to make useful products or processes.
• Yeast (a fungus) ferments sugars, making bread rise and producing alcohol in brewing.
• Fermentation is the anaerobic conversion of sugar by yeast into ethanol and carbon dioxide.
• Bacteria ferment milk to make yoghurt and cheese.
• Genetic engineering (recombinant DNA technology) transfers genes between organisms.
• Genetically modified organisms (GMOs) have had their genetic material deliberately altered.
• Human insulin is produced by bacteria that have been genetically engineered to make it.
• Penicillin, the first antibiotic, is produced by the mould Penicillium.
• Biotechnology creates crops that resist pests/disease and give higher yields.
• Alcohol (ethanol) is made by the fermentation of sugars.
• Vinegar is produced when bacteria oxidise alcohol into ethanoic (acetic) acid.
• Microorganisms are used to decompose and treat sewage — biotechnology in waste treatment.
• Biotechnology produces vaccines, hormones (like insulin) and other drugs.
• Traditional foods such as ogi, garri and ogiri are produced by microbial fermentation.
• GM foods raise concerns about possible long-term health/ecological effects and loss of biodiversity.
• Tissue culture grows many identical plants (clones) rapidly from small pieces of tissue.
• Bacteria, fungi (yeast) and algae are the microorganisms most used in biotechnology.
• Biogas from decomposing organic waste is mostly methane, used as fuel.
• Cloning produces genetically identical copies of the parent organism.
• Biotechnology provides solutions across medicine, agriculture, industry and the environment.
• Biotechnology applies technology to living things.
• Yeast releases CO₂, which makes the dough rise.
• Fermentation gives ethanol and CO₂.
• Lactic acid bacteria ferment milk into yoghurt.

Worked examples

Three Biotechnology questions with the answer and a short explanation, so you can see how the topic is set before you practise the full set.

How Biotechnology is tested in JAMB Biology

Our Biotechnology bank holds 40 questions (2 easy, 21 medium, 17 hard). JAMB Biology typically returns to Biotechnology year after year, so steady practice on this topic is high-value revision. Questions are multiple-choice with four options, and at UTME pace you get roughly 40 seconds each — which is why timed practice matters.

How to answer Biotechnology questions

Work the stem first and predict the answer before you look at the options; then eliminate the ones that contradict the key facts above. Watch for “which is not…”, “all of the above” and “except” style stems, which are where rushed candidates lose easy marks on Biotechnology. If a calculation or a precise definition is involved, work it from first principles rather than guessing from a half-remembered rule. When two options look right, re-read the stem for the qualifier that separates them — JAMB rarely repeats an option by accident. If you are still unsure, eliminate the two weakest choices to lift your odds, flag the question, and move on; never burn a full minute on one Biology item when the exam gives you about forty seconds each. Then come back to flagged questions with whatever time remains. The single most reliable way to get faster at Biotechnology is repeated timed practice, so use the button above until the recurring patterns feel automatic.

Common mistakes to avoid in Biotechnology

The errors that cost marks on Biotechnology are usually careless rather than conceptual: misreading a negative stem, confusing two similar terms, or rushing a definition you actually know. Candidates also over-rely on “expo” and last-minute cramming instead of understanding the topic — which fails the moment JAMB rephrases a familiar idea. Treat every option as a claim to be checked against the facts above, keep your working tidy for any calculation, and don’t change a considered answer on a hunch. Above all, revise Biotechnology actively by answering questions, not just by re-reading notes — recall under time is what the exam rewards.

Frequently asked questions

Is Biotechnology part of the JAMB Biology syllabus?

Yes. Biotechnology is a recognised topic in the JAMB Biology syllabus, covering define biotechnology and describe traditional uses (fermentation). You should be able to recall its key facts and apply them to multiple-choice questions.

How many Biotechnology questions can I practise on Belmadeng?

There are 40 original, JAMB-standard Biotechnology questions in our free bank, each with the correct answer and a worked explanation. You can practise them untimed or as a timed test.

What are the most important points to know about Biotechnology?

Biotechnology uses living organisms (or their products) to make useful things. Traditional biotechnology relies on fermentation by microorganisms — yeast for bread, brewing and alcohol; bacteria for yoghurt, cheese, vinegar and local foods like ogi, garri and ogiri. Modern biotechnology includes gen…

How do I answer Biotechnology questions quickly in JAMB?

Read the stem carefully, eliminate clearly wrong options, and match the remaining choices to the key facts for Biotechnology. Practising timed Biotechnology questions builds the speed you need for UTME's pace of about 40 seconds per question.

Are these JAMB Biology Biotechnology questions past questions or original?

They are original questions written to JAMB (UTME) standard and mapped to the official syllabus — not reproduced past papers. This keeps them legal to use freely while closely mirroring how the real exam tests the topic.

Where can I practise Biotechnology questions free without signing up?

Right here — tap “Start Biotechnology practice” on this page to begin instantly. Belmadeng's CBT practice is completely free and needs no sign-up, download or subscription.

About these questions: original, JAMB-standard items written from the official UTME Biology syllabus (last reviewed 2026-09-18). Belmadeng is an independent study platform and is not affiliated with JAMB. Spotted an error? Use the report link.