biology

Oceanihabitans

Oceanihabitans 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 Oceanihabitans rather than just read about it. In short: Oceanihabitans is a genus of marine bacterium in the family Flavobacteriaceae. It contains a single species, O. sediminis.

Key takeaways

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

Reference excerpt

Oceanihabitans is a genus of marine bacterium in the family Flavobacteriaceae. It contains a single species, O. sediminis. It is aerobic, Gram-negative, rod-shaped, and motile by gliding. O. sediminis produces flexirubin pigments. It is positive for cytochrome c oxidase and catalase. O. sediminis can use glucose, mannose, maltose and adipic acid as sole carbon sources for chemoheterotrophic growth. It is a chemoorganotroph and is chemotaxonomically characterized by the presence of menaquinone 6 (MK-6). The type strain is S9-10T.

Physiology O. sediminis is an aerobic microbe and is unable to grow under anaerobic or microaerophilic conditions. The major respiratory quinone is MK-6. It is cytochrome c oxidase and catalase positive. Oceanihabitans sediminis is capable of synthesizing a variety of hydrolytic enzymes including alkaline phosphatase, acid phosphatase, esterase lipase (C8), cysteine arylamidase, leucine arylamidase, valine arylamidase, naphthol-AS-Bi-phosphohydrolase, and chymotrypsin. A positive leucine arylamidase result indicates O. sediminis can hydrolyze proteins into oligopeptides or individual amino acids. The products of this reaction can serve as substrates for cell metabolism. A positive esterase lipase result indicates O. sediminis can break down emulsified mono-, di and triglycerides into glycerol and fatty acid residues.

Ecology Members of the family Flavobacteriaceae are distributed globally. However, the abundance and diversity increases south of the polar front. O. sediminis strain S9-10T was isolated from a sediment sample in the northern Yellow Sea in China. The phosphatase activity of marine microorganisms plays a pivotal role in phosphorus and carbon biogeochemical cycles. Phosphatase-producing bacteria are capable of hydrolyzing specific dissolved organic phosphorus compounds. This supplies pools of phosphorus and carbon to heterotrophic and autotrophic microbes.

Physiology O. sediminis is closely related to the genera Bizionia, Olleya, Lacinutrix, Algibacter, Winogradskyella,and Gaetbulibacter. Its DNA G+C content was 34.2 mol% which is consistent with other genera in the family Flavobacteriaceae. The predominant cellular fatty acids are iso-C15:0 (21.1 %), iso- C15:1G (16.3 %) and iso-C17:0 3-OH (12.0 %). The polar lipids are phosphatidylethanolamine, aminophospholipid, aminoglycolipid, two unidentified amino-lipids, and five unidentified polar lipids.

References

Worked examples

Example 1 — a first encounter with Oceanihabitans

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

In research: Oceanihabitans 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 Oceanihabitans 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: Oceanihabitans is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bacteria described in 2016, Bacteria genera, Flavobacteria, so understanding it makes those chapters shorter.
In everyday life: Look for Oceanihabitans 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 Oceanihabitans in 20 minutes

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

Frequently asked questions

What is Oceanihabitans in simple terms?

Oceanihabitans is a genus of marine bacterium in the family Flavobacteriaceae. It contains a single species, O. sediminis.

Why does Oceanihabitans 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 Oceanihabitans?

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 Oceanihabitans.