earth science

Halomonas elongata

Halomonas elongata is a earth 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 Halomonas elongata rather than just read about it. In short: Halomonas elongata is considered the type species of the genus Halomonas. It is a chemoorganotrophic, halophilic bacterium first isolated from a solar salt facility located in Bonaire, Netherlands Antilles.

Key takeaways

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

Reference excerpt

Halomonas elongata is considered the type species of the genus Halomonas. It is a chemoorganotrophic, halophilic bacterium first isolated from a solar salt facility located in Bonaire, Netherlands Antilles.

Biology and biochemistry

Morphology Halomonas elongata cells are gram-negative rods which are motile by either polar or peritrichous flagella. On a solid medium, H. elongata produce glistening, opaque white colonies that are about 2 mm in diameter.

Physiology Halomonas elongata are able to reduce NO3 to NO2 and are able to grow anaerobically in the presence of NO3. Cells of H. elongata are capable of utilizing malonate, fermenting glucose, and oxidizing glycerol, sucrose, mannose and cellobiose. Most strains of H. elongata can also oxidize lactose and gluconate. All strains are susceptible to HgCl2 and chloromycetin but have only a slight susceptibility to other antibiotics like penicillin, streptomycin, tetracycline, ampicillin, vibriostat O/129, novobiocin, neomycin, bacitracin and nalidixic acid. Halomonas elongata grows in a pH range of 5 to 9 and a temperature range of 4-45 °C. The optimum temperature being 30 °C. These organisms are also able to grow over a wide range of salt concentrations. All nine isolates first found at the Bonaire, Netherlands Antilles solar salt facility were capable of surviving in salt concentrations from 3.5 to 20%.

Genomics Halomonas elongata strains 1H9 and 1H11 have G+C contents of 60.5 %. H. elongata has a total genome size of 4.06 Mb.

References

External links "Halomonas elongata 1H9". The Bacterial Diversity Metadatabase. Mesophilic bacterium that was isolated from solar salt facility

Worked examples

Example 1 — a first encounter with Halomonas elongata

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

In research: Halomonas elongata appears in earth 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 Halomonas elongata 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: Halomonas elongata is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacteria described in 1980, Gram-negative bacteria, Halophiles, so understanding it makes those chapters shorter.
In everyday life: Look for Halomonas elongata 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 Halomonas elongata in 20 minutes

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

Frequently asked questions

What is Halomonas elongata in simple terms?

Why does Halomonas elongata matter?

Because it connects several earth 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 Halomonas elongata?

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 Halomonas elongata.