biology

Ivan Honl

Ivan Honl 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 Ivan Honl rather than just read about it. In short: Ivan Honl (23 April 1866 in Zbýšov, Moravia – 7 June 1936 in Lázně Běloves, Náchod, Czechoslovakia) was a Czech bacteriologist, serologist and activist in the struggle against tuberculosis. Honl became one of founders of Czech microbiology.

Key takeaways

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

Reference excerpt

Ivan Honl (23 April 1866 in Zbýšov, Moravia – 7 June 1936 in Lázně Běloves, Náchod, Czechoslovakia) was a Czech bacteriologist, serologist and activist in the struggle against tuberculosis. Honl became one of founders of Czech microbiology. Under the guidance of Jaroslav Hlava Honl gained his habilitation in bacteriology at Charles University in Prague in 1898. In 1919 he was named head to the new Czech Bacteriological Institute (Ústav pro bakteriologii a sérologii Lékařské fakulty Univerzity Karlovy). . Honl was one of the early researchers of antibiotics. At the end of the 1890s he isolated a product of Bacterium pyocyaneum (today called Pseudomonas aeruginosa), which was used as medicine (Anginol) from the start of WWI until it was replaced by penicillin after WWII. In 1899 he co-founded an institute to treat tuberculosis in Czechoslovakia and was active in this struggle for decades.

External links Short biography (in Czech)

Illustrations

Worked examples

Example 1 — a first encounter with Ivan Honl

Start with the simplest possible case. Write down what Ivan Honl 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 Ivan Honl 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 Ivan Honl 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 Ivan Honl

In research: Ivan Honl 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 Ivan Honl 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: Ivan Honl is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1866 births, 1936 deaths, Charles University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Ivan Honl 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 Ivan Honl in 20 minutes

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

Frequently asked questions

What is Ivan Honl in simple terms?

Why does Ivan Honl 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 Ivan Honl?

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 Ivan Honl.