biology

Temefos

Temefos 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 Temefos rather than just read about it. In short: Temefos or temephos (trade name Abate) is an organophosphate larvicide used to treat water infested with disease-carrying insects (including mosquitoes, midges, and black fly larvae) and crustaceans (copepods). As with other organophosphates, temephos affects the central nervous system through inhibition of cholinesterase.

Key takeaways

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

Reference excerpt

Temefos or temephos (trade name Abate) is an organophosphate larvicide used to treat water infested with disease-carrying insects (including mosquitoes, midges, and black fly larvae) and crustaceans (copepods). As with other organophosphates, temephos affects the central nervous system through inhibition of cholinesterase. In larvae, this results in death before reaching the adult stage. In the developing world where the vector-borne disease dengue fever is endemic, temephos is widely used and applied by both private and public pest control in areas of standing water where the Aedes aegypti mosquito breeds, in order to reduce the population of this disease-carrying insect. Temephos is also used in the Guinea Worm Eradication Program to kill the copepods that carry guinea worm larvae. Resistance to temephos by A. aegypti has been seen in Brazil. The Brazilian Aedes aegypti resistance monitoring program detected temephos resistance in A. aegypti populations from several localities in the country in 1999 (Funasa 2000, Lima et al. 2003). In 1999, mosquitoes from the city of Rio de Janeiro were observed to be resistant to temephos.

References

External links NIOSH Pocket Guide to Chemical Hazards International Chemical Safety Cards Abate product website by BASF Temefos in the Pesticide Properties DataBase (PPDB)

Bibliography Dejous C & Elouard J.M (1977) Action de l'abate sur les invertébérs aquatiques ; cinétique de décrochement à court et moyen terme (in French).

Illustrations

Worked examples

Example 1 — a first encounter with Temefos

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

In research: Temefos 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 Temefos 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: Temefos is common in secondary-school and first-year university syllabi. It links to neighbouring topics Acetylcholinesterase inhibitors, Neurotoxins, Organophosphate insecticides, so understanding it makes those chapters shorter.
In everyday life: Look for Temefos 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 Temefos in 20 minutes

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

Frequently asked questions

What is Temefos in simple terms?

Why does Temefos 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 Temefos?

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 Temefos.