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Questions tagged [biology]

Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy.

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Do cats and dogs only see in grayscale?

Ask most anybody about dogs or cats, and they will repeat the claim that these animals are colorblind. To most, it means greyscale. Is it true that cats (ref 2) and dogs (ref 2, ref 3) only see in ...
9
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1answer
3k views

Does KFC serve chicken?

There are rumors that the meat KFC serves is not permitted to be labelled as chicken. Kentucky Fried Chicken has become KFC. Does anybody know why? We thought the real reason was because of the "...
5
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1answer
1k views

Are green potatoes unhealthy to eat?

I have been told that green (unripe) potatoes are poisonous and that this is "common knowledge". I doubt there are any chemical properties in these potatoes that could cause any harm. AFAIK, potatoes ...
2
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0answers
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Does chlorine in water harm soil bacteria?

This article claims that both chlorine, and chloramine, which are added to many municipal water supplies to kill harmful bacteria, can also harm the good bacteria in soil, necessary for a healthy ...
38
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2answers
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Can an air-bubble in a syringe kill the patient?

I have heard of stories where, while giving injection to patient, a doctor forgot to remove all the air from the syringe. The patient died when the air reached to brain. Can injecting air into a vein ...
1
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1answer
377 views

Oxygen buildup in the atmosphere

It is commonly believed (or based on few evidences) that atmospheric oxygen built up because of extensive photosynthesis. I am skeptical about this theory that biotic factors are solely responsible ...
23
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2answers
11k views

Is cows' milk bad for cats?

My mother used to tell me that I shouldn't give our kitten cow milk, even if she seemed to enjoy it. Since I loved my kitten, and was quite disobedient at that time, I did it fairly often, and never ...
35
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1answer
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Can you cause mosquitos to explode from drinking too much blood by flexing your muscles?

I have heard several times as I've grown up that you can flex your muscles to make mosquitos get stuck and explode. Looking around the web, I find several sources claiming the same. Q: If you flex ...
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2answers
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Does wifi stunt cress growth?

A couple of weeks ago there were reports of an experiment by schoolchildren that appears to demonstrate that wifi router radiation adversely affects cress. There's been time now for the leading ...
7
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1answer
448 views

Do muscle systems operate exactly the same during a hangover?

In Training With a Hangover, Bill Starr says: The first thing I taught them when they stumbled into the weight room with giant hangovers was that the alcohol was nothing more than expensive ...
9
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2answers
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Does beef meat have twice the amount of oestrogen as soy?

I have been watching to some videos on Youtube to see if I should be a vegan. One of the thing that popped out during a discussion was the fact that soy contains a lot of oestrogen which could cause ...
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0answers
137 views

Is the intelligence of people going down? [duplicate]

Somewhat popular idea in media (say movie "Idiocracy") and general perception of older generation is that people and society are getting dumber. It seems that even real studies show that "stupid" ...
6
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2answers
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Can some species of jellyfish live forever?

I came accross one of those top 10 video today on youtube (while I remember trying to learn more about particle filter...) and it was about the longest living creatures. I already knew lobster and ...
10
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3answers
2k views

Could life begin by chance?

Evolutionists generally believe that although the spontaneous generation of life from non-living matter was a highly improbable event, the amount of time available is long enough to overcome this ...
9
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1answer
1k views

Did oil come from Dinosaurs?

Oil (and other carbon based fuels like Coal, but for this question, I'm more interested in Oil) is widely regarded as a "Fossil Fuel" because its origin was ancient flora and fauna, buried deep below ...
8
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1answer
817 views

Is there a disparity between the number of US schools teaching creationism and the population's desire?

Concerning Evolution and Creation being taught in public schools, is there a disparity between the majority opinion and the extent that each is taught? This web site says: Fifty studies were ...
15
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4answers
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Are humans the only animals that kill for pleasure or no purpose?

“Wild animals never kill for sport. Man is the only one to whom the torture and death of his fellow creatures is amusing in itself.” James Anthony Froude (British historian, 1818-1894) Is this ...
1
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1answer
3k views

Does excessive menthol cause sleepiness?

Does over consumption of menthol cause sleepiness? I found no substantial sources either to suport or refute this argument. I have heard it from a few sources not perfectly reliable. I do know that ...
16
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1answer
28k views

Can a plant survive bottled in its own ecosystem for 50 years?

I came across a story on Facebook about David Latimer, who put spiderwort plants into a bottle garden ("terrarium") in 1960, watered it in 1972, and then sealed the bung. The plants have been living, ...
9
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1answer
4k views

Can the rhinoceros beetle carry 100x its own weight?

Intel have posted a twitter pic depicting a rhinoceros beetle carrying 8 ultrabooks (of an unrecognizable brand) with the tagline: #FACT The Rhinoceros Beetle can lift up to 100x its own weight. ...
16
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1answer
35k views

Does the number of lobes on a green pepper indicate any specific culinary traits about the individual pepper?

I've seen claimed that whether a pepper has 3 lobes or bumps at the bottom or 4 can indicate whether that bell pepper is "sweeter, and better for eating, or firmer, and better for cooking". I've seen ...
1
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1answer
338 views

Is de-extinction possible in the near future? [duplicate]

I just read a news about an organization for de-extinction of extincted animals, see also here and here. I searched internet to see if it is really a possible project, but i haven't found any estimate ...
10
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1answer
2k views

Are pigs man-eaters?

This BBC news article reports that a farmer was eaten by his pig: Authorities are investigating how a farmer in the US state of Oregon was devoured by his pigs. Terry Vance Garner, 69, went to ...
10
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1answer
650 views

Is a short-term fast beneficial for maintaining good health and extending life expectancy?

This is claimed in Sweden's second-biggest newspaper. My translation: "I have started to short-term fast.[...] The reason is that lots of world leading scientists that study aging and the brain ...
41
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1answer
17k views

Was superglue invented to seal bullet injuries in Vietnam?

I cut myself recently and used superglue to seal the wound. I thought it was normal but when I tell people that act like I'm crazy. Then I tell them this story: Superglue was invented during the ...
6
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1answer
1k views

Is hand gel effective against Norovirus?

I saw the following claim in an article in The Guardian - How not to catch the norovirus Incidentally – and you can consider this a public service announcement – forget most hand gels, the majority ...
19
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1answer
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Is drinking a cold drink and drinking hot soup unhealthy in any way?

At least around here, in Costa Rica, it is common practice to avoid drinking cold drinks while drinking hot soup. I never questioned this (but didn't really care about it). Apparently it is, well, bad ...
14
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1answer
2k views

Is testosterone responsible for typically “male” behaviour?

On the English Language and Usage stack exchange, two people asked what was meant by "testosterone-charged", as in the following quote, from the story "2 States: The Story of My Marriage" by Chetan ...
16
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1answer
21k views

Can egg shells be digested?

I tried Googling but got no significant trustworthy result in the top few searches. The only reference I found is here: where the answered has guaranteed it without any reference! Yes Egg shell is ...
6
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1answer
911 views

Is Frontline (fipronil) an effective treatment for cat fleas?

Frontline Spot On (active ingredient fipronil) is advertised as a treatment for cat fleas: Kills fleas within 24 hours Kills fleas for up to 5 weeks in cats My mum recently went to her vet to ...
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2answers
1k views

Are there currently any tests available to diagnose fluoride or fluorine toxicity?

That's what I read here: http://www.merckmanuals.com/professional/nutritional_disorders/mineral_deficiency_and_toxicity/fluorine.html No tests to diagnose toxicity are available.
17
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1answer
2k views

Did the EPA fire a toxicologist, Dr. William Marcus, for refusing to remain silent on the cancer risk of fluoride?

I read that here in this article: http://www.nteu280.org/Issues/Fluoride/NTEU280-Fluoride.htm EPA fired the Office of Drinking Water's chief toxicologist, Dr. William Marcus, who also was our ...
15
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1answer
4k views

Can headbanging cause brain damage?

I'm not personally a fan of headbanging, but a friend of mine recently suggested they had brain damage from too many heavy metal concerts, and the suggestion got me thinking. A quick survey of my ...
29
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2answers
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Are humans incapable of digesting gluten?

Recently this I09 article about wheat made the rounds and there was a part in it that stood out to me: According to Alessio Fasano, the Medical Director for The University of Maryland's Center ...
36
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2answers
13k views

Does your stomach shrink if you eat less?

I've heard people say this before; that eating less shrinks your stomach, making you desire less food in the future. When I looked it up online just now, the first few results conflict: Eating less ...
7
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2answers
525 views

Can BCAAs be beneficial for recovery and performance for weight lifters?

There are a lot of Branched-chain amino acids (BCAAs) available in every shape and size. They are added to a lot of sports drinks and protein supplements. These can cost a lot of money and things are ...
14
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1answer
2k views

Is intelligence declining due to the lack of selection pressure?

I have read lately that human intelligence has already peaked and that it will slowly decline over time because humans are no longer naturally selected for intelligence (Darwin award winners aside). ...
11
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1answer
9k views

Will holding in your sneeze kill brain cells?

I heard from a friend that holding in your sneeze can actually kill a few of your brain cells. I did a google search, but most of the results had no evidence (e.g. Yahoo Answers). Moreover, I checked ...
56
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1answer
253k views

Do human eyes grow after birth?

My friend just assured me that when a person is born, their eyes are at the size they will be for the rest of their life, or, that they do not grow. A Google for this question shows that it has been ...
5
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2answers
2k views

Do the trees follow Fibonacci series? How?

Does the number of leaves on a branch follow Fibonacci numbers from top to bottom? Or is there more to nature than I really see it. This question came up after reading this article: Aidan Dwyer ...
14
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1answer
661 views

In the case of memory loss due to a blunt force impact, can memory later be restored by means of another blunt force impact?

In the case of memory loss due to a blunt force impact, can memory later be restored by means of another blunt force impact? Seems fairly common on TV. I did find some anecdotal evidence of this: ...
6
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1answer
3k views

Are baby snakes as venomous as adult ones?

I'm in a locality where I can find snakes walking around with ease. Its probable that I will also find the snake's baby (sized 4-5 inches). Whenever we encounter any such child some people at ...
17
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2answers
36k views

Are there male and female watermelon fruits?

This article, as well as folk wisdom, suggests buying "female" watermelons since they are sweeter and have less seeds. "Female" species are said to have a larger black spot on the side opposite to ...
40
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2answers
72k views

Does the DNA of one sperm contain 37.5 MB of information?

[Source] In an episode of the BBC show QI - Quite Interesting (Series J, Episode 1) Stephen Fry said: How much information do you think is in the DNA of one little sperm...? It's 37.5 MB... ...
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3answers
8k views

Does one drop of nicotine kill a horse?

There is a popular aphorism in Russia, translated as "one drop of nicotine kills a horse": , which is widely used on the anti-tobacco posters etc. Can 0.05 ml of nicotine really kill a healthy 400-...
17
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1answer
4k views

Has HIV ever been isolated?

In particular I am interested with one specific claim made by Jody Wells Memorial Prize. Is his claim true and reasonable? I'll explain what I mean by reasonable latter. The organisers of the Jody ...
5
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1answer
832 views

Can pumpkin/sunflower/flax/sesame/other seeds regulate hormones?

My wife has started using a technique using various seeds through various times to regulate hormone balance. Does this have any merit? Here's an example of using seeds as a supplement to regulate ...
10
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1answer
1k views

Do living lizards exist inside stones?

I have seen footage and articles that show living lizards walking out of a stone, when the stone is cracked open. Is this a reliable fact? Is it possible that a lizard (or in some cases, a beetle) ...
8
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1answer
1k views

Have scientists demonstrated an absent protein can cause chicks to be born with scales rather than feathers (as well as reptile scales to feathers)?

While researching and educating myself about evolution, I've come across an interesting claim that I'd like to learn more about, but so far, I've only been able to find the claim and no sources or ...
147
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2answers
23k views

Do victims of rape have biological defenses that prevent pregnancy?

Pro life Rep. Todd Akin, who is running for Senate in Missouri, recently said: “If it’s a legitimate rape, the female body has ways to try to shut that whole thing down.” Needless to say, this ...