science

Halorhabdus utahensis

Halorhabdus utahensis 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 Halorhabdus utahensis rather than just read about it. In short: Halorhabdus utahensis is a halophilic archaeon isolated from the Great Salt Lake in Utah. Cell structure and metabolism Halorhabdus utahensis (salt-loving rod) is a motile, Gram-negative, extremely halophilic archaeon that forms red, circular colonies.

Key takeaways

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

Reference excerpt

Halorhabdus utahensis is a halophilic archaeon isolated from the Great Salt Lake in Utah.

Cell structure and metabolism Halorhabdus utahensis (salt-loving rod) is a motile, Gram-negative, extremely halophilic archaeon that forms red, circular colonies. It grows at the temperatures between 17 and 55 °C, with optimal growth occurring at 50 °C. It can also grow over a pH range of 5.5–8.5 with the optimal pH value between 6.7 and 7.1. Further, with its extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism. The cells of H. utahensis are extremely pleomorphic, exhibiting any shape from irregular coccoid or ellipsoid to triangular, club-shaped or rod-shaped forms. The rod-shaped and ellipsoid cells are 2-10 by 0.5-1 μm and 1-2 by 1 μm in size, respectively, and the spherical cells have a diameter of approximately 1 μm. The archaeon uses only a limited range of substrates, such as glucose, xylose, and fructose, for growth, and is unique in its inability to utilize yeast extract or peptone. Other substances that did not stimulate the organism's growth include organic acids, amino acids, alcohols, glycogen, and starch.

References

Further reading Waino M, Tindall BJ, Ingvorsen K (2000). "Halorhabdus utahensis gen. nov., sp. nov., an aerobic, extremely halophilic member of the Archaea from Great Salt Lake, Utah". Int. J. Syst. Evol. Microbiol. 50: 183–190. doi:10.1099/00207713-50-1-183. PMID 10826803.

Worked examples

Example 1 — a first encounter with Halorhabdus utahensis

Start with the simplest possible case. Write down what Halorhabdus utahensis 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 Halorhabdus utahensis 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 Halorhabdus utahensis 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 Halorhabdus utahensis

In research: Halorhabdus utahensis 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 Halorhabdus utahensis 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: Halorhabdus utahensis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Archaea described in 2000, Archaea stubs, Methanobacteriati, so understanding it makes those chapters shorter.
In everyday life: Look for Halorhabdus utahensis 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 Halorhabdus utahensis in 20 minutes

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

Frequently asked questions

What is Halorhabdus utahensis in simple terms?

Halorhabdus utahensis is a halophilic archaeon isolated from the Great Salt Lake in Utah. Cell structure and metabolism Halorhabdus utahensis (salt-loving rod) is a motile, Gram-negative, extremely halophilic archaeon that forms red, circular colonies.

Why does Halorhabdus utahensis 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 Halorhabdus utahensis?

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 Halorhabdus utahensis.