science

Parachlamydiaceae

Parachlamydiaceae is a science 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 Parachlamydiaceae rather than just read about it. In short: Parachlamydiaceae is a family of bacteria in the order Chlamydiales. Species in this family have a Chlamydia–like cycle of replication and their ribosomal RNA genes are 80–90% identical to ribosomal genes in the Chlamydiaceae.

Key takeaways

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

Reference excerpt

Parachlamydiaceae is a family of bacteria in the order Chlamydiales. Species in this family have a Chlamydia–like cycle of replication and their ribosomal RNA genes are 80–90% identical to ribosomal genes in the Chlamydiaceae. The Parachlamydiaceae naturally infect amoebae and can be grown in cultured Vero cells. The Parachlamydiaceae are not recognized by monoclonal antibodies that detect Chlamydiaceae lipopolysaccharide.

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).

Unassigned species:

"Ca. Mesochlamydia elodeae" Corsaro et al. 2012 "Ca. Metachlamydia lacustris" Corsaro et al. 2010 Isolated Endosymbionts include:

Hall's coccus P9 UV-7 endosymbiont of Acanthamoeba sp. TUME1 endosymbiont of Acanthamoeba sp. UWC22 endosymbiont of Acanthamoeba sp. UWE1 Uncultured lineages include:

Neochlamydia turtle type 1 environmental Neochlamydia corvenA4 cvC15 cvC7 cvE5 Parachlamydia acanthamoebae has variable Gram staining characteristics and is mesophilic. Trophozoites of Acanthamoeba hosting these strains were isolated from asymptomatic women in Germany and also in an outbreak of humidifier fever (‘Hall’s coccus’) in Vermont USA. Four patients from Nova Scotia whose sera recognized Hall's coccus did not show serological cross-reaction with antigens from the Chlamydiaceae.

See also List of bacterial orders List of bacteria genera

Notes Metachlamydia lacustris and Protochlamydia species were found at the National Center for Biotechnology Information (NCBI) but have no standing with the Bacteriological Code (1990 and subsequent Revision) as detailed by List of Prokaryotic names with Standing in Nomenclature (LPSN) as a result of the following reasons: • No pure culture isolated or available for prokaryotes. • Not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection. • Not approved and published by the International Journal of Systematic Bacteriology or the International Journal of Systematic and Evolutionary Microbiology (IJSB/IJSEM).

References

Worked examples

Example 1 — a first encounter with Parachlamydiaceae

Start with the simplest possible case. Write down what Parachlamydiaceae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Parachlamydiaceae 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 Parachlamydiaceae 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 Parachlamydiaceae

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

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

Frequently asked questions

What is Parachlamydiaceae in simple terms?

Why does Parachlamydiaceae matter?

Because it connects several science 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 Parachlamydiaceae?

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 Parachlamydiaceae.