science

Haloarcula marismortui

Haloarcula marismortui 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 Haloarcula marismortui rather than just read about it. In short: Haloarcula marismortui is a halophilic archaeon isolated from the Dead Sea. Morphology Haloarcula marismortui is a Gram-negative archaeon with a cell size of 1.0–2.x 2.0–3.0 μm (diameter x length).

Key takeaways

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

Reference excerpt

Haloarcula marismortui is a halophilic archaeon isolated from the Dead Sea.

Morphology Haloarcula marismortui is a Gram-negative archaeon with a cell size of 1.0–2.x 2.0–3.0 μm (diameter x length). Cells are pleomorphic appearing as short rods to rectangles. H. marismortui is motile via archaellum and possesses a cell membrane that consists of triglycosyl, diether lipids, and glycoproteins.

Metabolism H. marismortui is an aerobic chemoorganotroph that utilizes glycolysis and a modified Entner-Doudaroff pathway for the breakdown of nutrients. H. marismortui utilizes energy sources such as glucose, sucrose, fructose, glycerol, malate, acetate & succinate while producing nitrogen, metabolic carbon, and acid as byproducts. Can also grow anaerobically by using nitrate as an electron acceptor.

Genomic properties The genome of H. marismortui is organized into nine circular replicons, in which individual G+C content varies from 54 to 62%. H. marismortui contains 4,366 genes and 4,274,642 base pairs (Strain ATCC 43049). H. marismortui has one of the only two prokaryotic large ribosomal subunits which have so far been crystallized. The other one is Deinococcus radiodurans.

Ecology

Habitat Haloarcula marismortui is considered an extreme halophile and has been isolated from the Dead Sea. H. marismortui has a temperature optima between 40 and 50 °C and a pH range of 5.5–8.0. Growth can occur at a wide range of NaCl concentrations spanning 5-35% with optimal growth between 15 and 25%. The unusually large number of environmental regulatory genes found within the H. marismortui genome suggests higher fitness in extreme environments compared to other species of Halobacterium.

Adaptability H. marismortui encodes a large family of multi-domain proteins (49) that act as sensors and regulators including Opsin proteins "Sop I & II, Hop, & Bop". These proteins help maintain physiological ion concentrations, facilitate phototaxis, and generate chemical energy via a proton gradient. H. marismortui is believed to possess over 100 ecoparalogs, genes that perform the same function under environmental stress, that helps maintain its system of environmental adaptability. Multiple genes were found to have a factor on temperature control (rrnA/B/C) and cell motility (FlaA2 & FlaB). H. marismortui encodes a large family of multidomain proteins (49) that act as environmental regulators and sensors. This allows H. marimortui to survive in highly variable environmental conditions. High environmental adaptability makes H. marismortui an ideal candidate for future bioremediation research with the potential of utilizing its environmental sensory genes in environmental clean up.

References

Worked examples

Example 1 — a first encounter with Haloarcula marismortui

Start with the simplest possible case. Write down what Haloarcula marismortui 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 Haloarcula marismortui 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 Haloarcula marismortui 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 Haloarcula marismortui

In research: Haloarcula marismortui 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 Haloarcula marismortui 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: Haloarcula marismortui is common in secondary-school and first-year university syllabi. It links to neighbouring topics Archaea described in 1940, Archaea stubs, Haloarchaea, so understanding it makes those chapters shorter.
In everyday life: Look for Haloarcula marismortui 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 Haloarcula marismortui in 20 minutes

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

Frequently asked questions

What is Haloarcula marismortui in simple terms?

Haloarcula marismortui is a halophilic archaeon isolated from the Dead Sea. Morphology Haloarcula marismortui is a Gram-negative archaeon with a cell size of 1.0–2.x 2.0–3.0 μm (diameter x length).

Why does Haloarcula marismortui 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 Haloarcula marismortui?

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 Haloarcula marismortui.