biology

Holdemania

Holdemania 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 Holdemania rather than just read about it. In short: Holdemania is a Gram-positive, strictly anaerobic and non-spore-forming genus from the family Erysipelotrichaceae, with two known species: Holdemania filiformis and Holdemania massiliensis. This genus was named after Lilian V.

Key takeaways

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

Reference excerpt

Holdemania is a Gram-positive, strictly anaerobic and non-spore-forming genus from the family Erysipelotrichaceae, with two known species: Holdemania filiformis and Holdemania massiliensis. This genus was named after Lilian V. Holdeman an American microbiologist from the Anaerobe Lab at Virginia Tech.

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 Mishra, Ajay Kumar; Lagier, Jean-Christophe; Pfleiderer, Anne; Nguyen, Thi Thien; Caputo, Aurelia; Raoult, Didier; Fournier, Pierre-Edouard (15 December 2013). "Non-contiguous finished genome sequence and description of Holdemania massiliensis sp. nov". Standards in Genomic Sciences. 9 (2): 395–409. Bibcode:2013SGenS...9..395M. doi:10.4056/sigs.4628316. PMC 4062643. PMID 24976895. Paul, De Vos (2009). Bergey's manual of systematic bacteriology (2nd ed.). Dordrecht: Springer. ISBN 978-0-387-68489-5.

Worked examples

Example 1 — a first encounter with Holdemania

Start with the simplest possible case. Write down what Holdemania 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 Holdemania 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 Holdemania 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 Holdemania

In research: Holdemania 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 Holdemania 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: Holdemania is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anaerobes, Bacillota stubs, Bacteria described in 1997, so understanding it makes those chapters shorter.
In everyday life: Look for Holdemania 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 Holdemania in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Holdemania 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 Holdemania out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Holdemania in simple terms?

Why does Holdemania 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 Holdemania?

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 Holdemania.