biology

Olsenella

Olsenella is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Olsenella rather than just read about it. In short: Olsenella is a Gram-positive, non-spore-forming, obligate anaerobic and non-motile bacterial genus from the family Atopobiaceae. Olsenella is named after the microbiologist Ingar Olsen.

Key takeaways

Olsenella belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Olsenella to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Olsenella from memory before moving on to harder problems.

Reference excerpt

Olsenella is a Gram-positive, non-spore-forming, obligate anaerobic and non-motile bacterial genus from the family Atopobiaceae. Olsenella is named after the microbiologist Ingar Olsen. Olsenella bacteria are involved in endodontic infections in humans.

Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).

References

Further reading Göker, Markus; Held, Brittany; Lucas, Susan; Nolan, Matt; Yasawong, Montri; Glavina Del Rio, Tijana; Tice, Hope; Cheng, Jan-Fang; Bruce, David; Detter, John C.; Tapia, Roxanne; Han, Cliff; Goodwin, Lynne; Pitluck, Sam; Liolios, Konstantinos; Ivanova, Natalia; Mavromatis, Konstantinos; Mikhailova, Natalia; Pati, Amrita; Chen, Amy; Palaniappan, Krishna; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Rohde, Manfred; Sikorski, Johannes; Pukall, Rüdiger; Woyke, Tanja; Bristow, James; Eisen, Jonathan A.; Markowitz, Victor; Hugenholtz, Philip; Kyrpides, Nikos C.; Klenk, Hans-Peter; Lapidus, Alla (20 August 2010). "Complete genome sequence of Olsenella uli type strain (VPI D76D-27CT)". Standards in Genomic Sciences. 3 (1): 76–84. doi:10.4056/sigs.1082860. PMC 3035265. PMID 21304694. Kraatz, M; Wallace, RJ; Svensson, L (April 2011). "Olsenella umbonata sp. nov., a microaerotolerant anaerobic lactic acid bacterium from the sheep rumen and pig jejunum, and emended descriptions of Olsenella, Olsenella uli and Olsenella profusa". International Journal of Systematic and Evolutionary Microbiology. 61 (Pt 4): 795–803. doi:10.1099/ijs.0.022954-0. PMID 20435744.

Worked examples

Example 1 — a first encounter with Olsenella

Start with the simplest possible case. Write down what Olsenella claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Olsenella before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Olsenella ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Olsenella

In research: Olsenella appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Olsenella in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Olsenella is common in secondary-school and first-year university syllabi. It links to neighbouring topics Actinomycetota stubs, Bacteria genera, Coriobacteriia, so understanding it makes those chapters shorter.
In everyday life: Look for Olsenella outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Olsenella in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Olsenella means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Olsenella out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Olsenella in simple terms?

Olsenella is a Gram-positive, non-spore-forming, obligate anaerobic and non-motile bacterial genus from the family Atopobiaceae. Olsenella is named after the microbiologist Ingar Olsen.

Why does Olsenella matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Olsenella?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Olsenella.