biology

Sulfurisphaera

Sulfurisphaera 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 Sulfurisphaera rather than just read about it. In short: Sulfurisphaera is a genus of the Sulfolobaceae. Description and significance Sulfurisphaera is a facultatively anaerobic, thermophilic, Gram-negative archaeon that occurs in acidic solfataric fields.

Key takeaways

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

Reference excerpt

Sulfurisphaera is a genus of the Sulfolobaceae.

Description and significance Sulfurisphaera is a facultatively anaerobic, thermophilic, Gram-negative archaeon that occurs in acidic solfataric fields. The organism grows under the temperature range of 63–92 °C with the optimum temperature at 84 °C, and under the pH range of 1.0–5.0, with an optimum of pH 2.0. It forms colonies that are smooth, roundly convex, and slightly yellow.

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

Genome structure The genome of Sulfurisphaera is yet to be sequenced. The G + C content is estimated to be 30–33%.

Cell structure and metabolism The spherical cells of Sulfurisphaera ohwakuensis are 1.2–1.5 μm in diameter. Thin sections of the organism reveal an envelope (approx. 24 nm) surrounding the cell membrane. It grows organotrophically on proteinaceous, complex substrates such as yeast extract, peptone, and tryptone. Growth was not observed on single sugars or amino acids such as D-glucose, D-galactose, D-fructose, D-xylose, lactose, maltose, sucrose, alanine, glutamate, glycine, and histidine.

Ecology The strains of Sulfurisphaera ohwakuensis were isolated from multiple locations in the acidic hot springs in Ohwaku Valley, Hakone, Japan.

Worked examples

Example 1 — a first encounter with Sulfurisphaera

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

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

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

Frequently asked questions

What is Sulfurisphaera in simple terms?

Sulfurisphaera is a genus of the Sulfolobaceae. Description and significance Sulfurisphaera is a facultatively anaerobic, thermophilic, Gram-negative archaeon that occurs in acidic solfataric fields.

Why does Sulfurisphaera 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 Sulfurisphaera?

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 Sulfurisphaera.