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Thermosphaera

Thermosphaera 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 Thermosphaera rather than just read about it. In short: Thermosphaera is a genus of the Desulfurococcaceae. They are a group of prokaryotic organisms which have been discovered in extremely hot environments such as sulfur springs, volcanoes, and magma pools.

Key takeaways

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

Reference excerpt

Thermosphaera is a genus of the Desulfurococcaceae. They are a group of prokaryotic organisms which have been discovered in extremely hot environments such as sulfur springs, volcanoes, and magma pools. Isolates of Thermosphaera were first identified in 1998 from the Obsidian Pool in Yellowstone National Park.

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).

Cell structure and metabolism Cells of Thermosphaera are cocci (spherical) and form grape-like aggregates during the exponential growth phase. In the late exponential and stationary growth phases, smaller groups, including some single cells, were visible. Aggregates were shown to have several flagella; single cells could have as many as eight. The cell envelope is an amorphous layer covering a cytoplasmic membrane. Temperatures exceeding 92 °C inhibits growth, as does sulfur and hydrogen. Thermosphaera cells are heterotrophic, processing energy from yeast.

Ecology Thermosphaera are found mainly in sulfuric pools, where they thrive on the extreme temperatures. In terms of research and economic significance, learning more about these organisms and their properties may help advancements in biotechnology.

Genome structure Sequencing the 16S rRNA of Thermosphaera showed that this isolate was a member of the group Crenarchaeota and closely related to Staphylothermus and Desulfurococcus.

See also List of Archaea genera

References

Further reading Huber R; Dyba D; Huber H; Burggraf S; Rachel R (1998). "Sulfur-inhibited Thermosphaera aggregans sp. nov., a new genus of hyperthermophilic archaea isolated after its prediction from environmentally derived 16S rRNA sequences". Int. J. Syst. Bacteriol. 48: 31–38. doi:10.1099/00207713-48-1-31. PMID 9542073. Burggraf S; Huber H; Stetter KO (1997). "Reclassification of the crenarchael orders and families in accordance with 16S rRNA sequence data". Int. J. Syst. Bacteriol. 47 (3): 657–660. doi:10.1099/00207713-47-3-657. PMID 9226896. Huber R; Burggraf S; Mayer T; Barns SM; Rossnagel P; Stetter KO (1995). "Isolation of a hyperthermophilic archaeum predicted by in situ RNA analysis". Nature. 376 (6535): 57–58. Bibcode:1995Natur.376...57H. doi:10.1038/376057a0. PMID 7541115. S2CID 4335718. Zillig W; Stetter KO; Prangishvilli D; Schafer W; Wunderl S; Janekovic D; et al. (1982). "Desulfurococcaceae, the second family of the extremely thermophilic, anaerobic, sulfur-respiring Thermoproteales". Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. C3: 304–317.

Worked examples

Example 1 — a first encounter with Thermosphaera

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

In research
Thermosphaera 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 Thermosphaera 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
Thermosphaera is common in secondary-school and first-year university syllabi. It links to neighbouring topics Archaea stubs, Monotypic archaea genera, Thermoproteota, so understanding it makes those chapters shorter.
In everyday life
Look for Thermosphaera 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 Thermosphaera in 20 minutes

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

Frequently asked questions

What is Thermosphaera in simple terms?

Thermosphaera is a genus of the Desulfurococcaceae. They are a group of prokaryotic organisms which have been discovered in extremely hot environments such as sulfur springs, volcanoes, and magma pools.

Why does Thermosphaera 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 Thermosphaera?

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 Thermosphaera.

Tags

  • Archaea stubs
  • Monotypic archaea genera
  • Thermoproteota

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