L.Diago
  • Member for 3 years, 11 months
  • Last seen more than a month ago
  • Praha, Česko
For how long would a flu-contaminated parcel be an effective disease vector?
19 votes

From the UK National Health Service: Flu viruses capable of being transferred to hands and causing an infection can survive on hard surfaces for 24 hours. Infectious flu viruses can survive on ...

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Where does the proton come in the reduction of NAD?
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10 votes

In a very simple way the equation describes the reaction. NAD is reduced using 2 hydrogen atoms. The two hydrogen atoms can come from one reactant (lactic acid fermentation) or from two (in a reaction ...

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What species is the smallest bird?
8 votes

The smallest bird in the world is the bee hummingbird. I think the minimum size is only limited by the size of organs. I mean that certain organs need to have a minimum size to maintain their ...

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What kind of owl does this moth look like?
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7 votes

First of all what a nice foto! I think this is Antheraea polyphemus. According to Wikipedia, the moth has an average of 15 cm (6 in). The purplish eyespots on hind wings give its name - from the ...

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Are turkish hazelnuts edible?
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5 votes

First off all let me say something about this tree. Turkish hazelnut (Corylus colurna) is a slow growing pyramidal tree approximately around 25 m (82ft) tall, with a stout trunk up to 1.5 m (4 ft 11 ...

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Are bananas C3, C4, or CAM plants?
5 votes

First of all, we have to think about the ecosystem in which banana exist. Obviously, the banana is in a rain forest. Rain forests are a very interesting ecosystem with lots of species. The climate is ...

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What tree has three balls
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5 votes

As you noticed this is definitely tree from Platanus order. The London plane which is Platanus acerifolia, which is more casual is actually a hybrid of two platanus. Those two names are Platanus ...

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What species of spider is this?
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5 votes

I think this is just Tegenaria domestica. I am from Czech republic and this is really big and kinde everywhere. Specialy in garages.

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Do all retroviruses evolve into dna viruses?
4 votes

First of all we need to be clear with the differences between DNA and RNA. This is the typical picture that comes to our mind after high school biology classes when anybody mentions RNA and DNA. But ...

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Why are Chloride Anions necessary for gastric acid functioning?
3 votes

Mebrane divide basicly enviroment to two disimular sections. This sections differ in lots of chemical/ phycical properties. One of those is electrochemical potential which it can be in the very simple ...

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What is the function of Xylem parenchyma?
3 votes

I would like to aswer your question. First definition, function is from this web: The xylem parenchyma is comprised of parenchyma cells. Parenchyma cells are the only living cells in the xylem. ...

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What kind of a fly is this?
3 votes

I found out that this is on of the most common specious from this family in whole Euroupe called Bombylius major. From wikipedia article (same with picture): The adult is 14 to 18 millimetres (0.55 ...

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ATP production via aerobic respiration
3 votes

I dont know how much do you know this metabolic paths but i am going to try to get that 32 ATP out of 38 ATP step by step. First off all in glycolysis you have to activate sugars with phosphate (...

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During what phase is the cell polyploid?
3 votes

I assume that you mean phase of cell division. First off all i will write down a definition of word polyploid. Polyploid is cell which has two or more pairs of homologus chromozoms. There are two ...

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What kind of insect is it?
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3 votes

This is the heart and dart moth (Agrotis exclamationis). Its name refers to the special black spots, which have shape of dart and heart. This moth is one of the most common in the Paleoarctic ecozone....

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Distinction between primary and secondary tumor
3 votes

The difference is pretty easy to understand. The secondary tumors is metastiesed tumor sped to enother parts of body. On the other hand the primary tumor is the source of the metastiesed. I give you ...

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Why is it beneficial for bacteria to conjugate? (Horisontal gene transfer)
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3 votes

I am going to try answer it. Bacteria in general has different survival tactics. In general for bacteria the best way how to surviva is as much copies as it cans. So imagine situation, when bacteria ...

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What insect is this? (England)
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2 votes

I think i have an answer it is this nice guy. Latin name is Leptoglossus occidentalis. Short description of Leptoglossus occidentalis: Western Conifer Seed Bug The Western Conifer Seed Bug ...

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Is rabies virus infectious outside host?
2 votes

First off all we need to be 100% sure what does be infectious mean. According cambridge dictionary meaning of the word infectious is be able to past from one host organism (multicellular/cellular) ...

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How to solve these kinds of problems?
1 votes

I definitely recommend looking at your calculations. The "unable to roll tongue" trait is recessive, not dominant. Look at the Hardy-Weinberg equation $p^2 + 2pq + q^2 = 1$. Try to extract ...

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What does 'virus prototype strain' mean?
1 votes

virus strain: Different lines or isolates of the same virus (e.g., from different geographical location or patients) prototype: the first example of something, such as a machine or other ...

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Significance of Nissl bodies
1 votes

I am going to try answer this question. The origine of this name came from article writen by Franz Niessl (18660-1919) and published in 1894. HE found this substance after he visualized it by nissl ...

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What snake is this one?
1 votes

I think it could be Vipera aspis, but that leght what did you descripe is really rare. Anyway it can be Smooth Snake(https://en.wikipedia.org/wiki/Smooth_snake) too. But you know personaly i cant do ...

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Identify plant stem parts
1 votes

I reckon that picture as cauloma. Because it has a trichoms on epidermis. A_ corical parenchyma B_Phloem C_ xylem D_pitch. I hope it will help you.

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