Biology Weekly Newsletter
Biology Weekly Newsletter

Top new questions this week:

Why are potassium channels slower than sodium channels?

I am relatively new in the subject of biology. I have a strong mathematical background and in order to get into the field of computational neuroscience, I am trying to get some biological background. ...

neuroscience biophysics neurophysiology  
asked by user135172 10 votes
answered by AliceD 10 votes

Does the cell internal temperature changes in response to a change in external temperature?

Background Some species are homeotherm (internal temperature is not affected by a change in external temperature) and some are poikilotherm (internal temperature changes in response to external ...

biochemistry cell-biology ecology temperature  
asked by Remi.b 10 votes
answered by Eli Korvigo 6 votes

Do birds emit infrared?

I'm an electronics engineering student and I am going to use a sensor that detects infrared emitted by birds that invade rice paddies. My question is: Do birds emit infrared radiation? I know that ...

metabolism ornithology temperature reptile  
asked by reeglysonforubuntu 9 votes
answered by AliceD 12 votes

Why we do not get hurt from HCl secreted in the stomach?

I read in my book that during digestion our stomach secretes hydrochloric acid ($HCl$). Why we do not get hurt from it? It was also said that mucous provides protection, but from where is it coming?

human-biology gastroenterology  
asked by Pi5 8 votes
answered by AMR 9 votes

Do biological phenomena follow Gaussian statistics?

I have recently entered the life sciences (from physics). I am concerned about the use of p values in the life sciences literature. For example, in this article, they test 9 - 12 rats in a control ...

theoretical-biology statistics experimental-design data  
asked by irritable_phd_syndrom 7 votes
answered by WYSIWYG 6 votes

Why can humans feel electricity?

What evolutionary process has provided humans with the ability of feeling electric current? Besides lightning and electric eel, what natural hazards include electricity that poses a threat to humans? ...

human-biology neuroscience sensation electrical-stimulation  
asked by Gstestso 5 votes
answered by AliceD 6 votes

Is it possible there were multiple origins of life? And, if so, why did the one which became the common ancestor between all organisms prevail?

I have learned that all currently-living organisms come from a common ancestor, which I theoretically understand. However, my professor in a class mentioned that there is a chance that there were ...

evolution natural-selection species  
asked by Julia 5 votes
answered by user17496 0 votes

Greatest hits from previous weeks:

Why are (some) cats attracted by bleach?

(Sorry if this question is only partly biological) I have noticed that several cats (including the one that keeps sleeping in my house), are fond of the odor of bleach (eau de Javel) and chlorine. ...

zoology physiology perception  
asked by ogerard 4 votes
answered by Richard Smith-Unna 8 votes

Pedigree Probability of Autosomal Recessive Trait

Here is a pedigree: The trait is autosomal recessive. The question is: What is the probability that the bottom 2 people (4 and 5) have a child with the trait? I tried doing 2/3 * 2/3 * 2/3 *1/4 ...

genetics homework genetic-diagrams  
asked by Kirby 4 votes
answered by Rory M 6 votes

Can you answer these?

How did the double circulatory system evolve from the single circulatory system

I already learned how the mammal circulatory system (double circulatory system) evolved from the reptilian circulatory system. How did natural selection evolve the reptilian circulatory system and the ...

evolution natural-selection evolutionary-game-theory circulatory-system macroevolution  
asked by Timothy 1 vote

Source of journals collecting titles of scientific publications regarding clinical trials with dogs fed medicinal herbs

After some time researching on the web, you can find a lot of websites telling you that some herbs may have or have specific properties(unfortunately most seem to be "advertised" as if they were ...

pharmacology medicine reference-request clinical-trial  
asked by shooting-squirrel 1 vote

Why do we turn darker in the sun?

I tried the all powerful google to answer this question - but I am not getting the answer I seek. I know we turn darker because the skin produces melanin. The question remains - why darker? I am a ...

human-biology evolution  
asked by Andrew 1 vote
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