biology

Indivirus

Indivirus 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 Indivirus rather than just read about it. In short: Indivirus (IndV) is a genus of giant double-stranded DNA-containing viruses (NCLDV). This genus was detected during the analysis of metagenome samples of bottom sediments of reservoirs at the wastewater treatment plant in Klosterneuburg, Austria.

Key takeaways

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

Reference excerpt

Indivirus (IndV) is a genus of giant double-stranded DNA-containing viruses (NCLDV). This genus was detected during the analysis of metagenome samples of bottom sediments of reservoirs at the wastewater treatment plant in Klosterneuburg, Austria. New Klosneuvirus (KNV), Hokovirus and Catovirus genera (all found in these sewage waters) were also described together with Indivirus, building up a putative virus subfamily Klosneuvirinae (Klosneuviruses) with KNV as type genus. Indivirus has a genome of 0.86 million base pairs (660 gene families). This is the smallest genome among Klosneuviruses as mentioned above. GC content is 26.6 % Classification of metagenome, made by analyzing 18S rRNA indicate that their hosts are relate to the simple Cercozoa. Phylogenetic tree topology of Mimiviridae is still under discussion. Some authors (CNS 2018) like to put Klosneuviruses together with Cafeteria roenbergensis virus (CroV) and Bodo saltans virus (BsV) into a tentative subfamily called Aquavirinae. Another proposal is to put them all together with Mimiviruses into a subfamily Megavirinae.

See also Nucleocytoplasmic large DNA viruses Girus Mimiviridae

References

Further reading Mitch Leslie: Giant viruses found in Austrian sewage fuel debate over potential fourth domain of life. In: Science. 5. April 2017, doi:10.1126/science.aal1005.

Worked examples

Example 1 — a first encounter with Indivirus

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

In research: Indivirus 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 Indivirus 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: Indivirus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Mimiviridae, Unaccepted virus taxa, Virus genera, so understanding it makes those chapters shorter.
In everyday life: Look for Indivirus 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 Indivirus in 20 minutes

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

Frequently asked questions

What is Indivirus in simple terms?

Why does Indivirus 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 Indivirus?

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 Indivirus.