biology

Ignisphaera

Ignisphaera 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 Ignisphaera rather than just read about it. In short: Ignisphaera is a genus of the Desulfurococcales. Ignisphaera aggregans is a coccoid- shaped, fourth type strain that is strictly anaerobes with anaerobic respiration.

Key takeaways

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

Reference excerpt

Ignisphaera is a genus of the Desulfurococcales. Ignisphaera aggregans is a coccoid- shaped, fourth type strain that is strictly anaerobes with anaerobic respiration. This archaea species are hyperthermophiles that were found in New Zealand's hot springs in Kuirau Park, Rotorua.

Further reading

Scientific journals Goeker, Markus; Held, Brittany; Lapidas, Alla (2010). "Complete genome sequence of Ignisphaera aggregans type strain (AQ1.S1T)". Standards in Genomic Sciences. 3 (1): 66–75. doi:10.4056/sigs.1072907. PMC 3035270. PMID 21304693. Niederberger TD, Gotz DK, McDonald IR, Ronimus RS, Morgan HW (2006). "Ignisphaera aggregans gen. nov., sp. nov., a novel hyperthermophilic crenarchaeote isolated from hot springs in Rotorua and Tokaanu, New Zealand". Int. J. Syst. Evol. Microbiol. 56 (Pt 5): 965–971. doi:10.1099/ijs.0.63899-0. PMID 16627639. 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. Knappy, Chris S.; Nunn, Charlotte E. M.; Morgan, Hugh W.; Keely, Brendan J. (July 2011). "The major lipid cores of the archaeon Ignisphaera aggregans: implications for the phylogeny and biosynthesis of glycerol monoalkyl glycerol tetraether isoprenoid lipids". Extremophiles. 15 (4): 517–528. doi:10.1007/s00792-011-0382-3. PMID 21630026. S2CID 22854327.

Scientific books Huber H, Stetter KO (2001). "Order II. Desulfurococcales ord. nov.". In DR Boone, RW Castenholz (eds.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (2nd ed.). New York: Springer Verlag. ISBN 978-0-387-98771-2.

Illustrations

Worked examples

Example 1 — a first encounter with Ignisphaera

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

In research: Ignisphaera 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 Ignisphaera 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: Ignisphaera 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 Ignisphaera 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Ignisphaera” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Ignisphaera in 20 minutes

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

Frequently asked questions

What is Ignisphaera in simple terms?

Ignisphaera is a genus of the Desulfurococcales. Ignisphaera aggregans is a coccoid- shaped, fourth type strain that is strictly anaerobes with anaerobic respiration.

Why does Ignisphaera 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 Ignisphaera?

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 Ignisphaera.