3
votes
1answer
146 views

Differences between right and left handed people

Are there any articles reporting any significant differences in behavior, attitudes, intelligence, appearance, etc., between right and left handed people?
6
votes
1answer
2k views

Why does ostrich meat look and taste more like beef than chicken?

Some time ago I tasted ostrich meat, and what was amazing to me was that the meat very much resembled beef, much more than it resembled chicken, turkey or duck meat. And even more than lamb and pork ...
6
votes
1answer
2k views

Can breathing in helium (from balloons for example) cause damage to the throat in the long term?

Often an activity to do at a party, breath in helium and speak like one of the chipmunks. But, I am wondering, would infrequent inhalation of helium cause long term harm to the throat? in particular, ...
2
votes
1answer
207 views

What is the difference between vegetable and fruit?

Is there any exact definition of vegetable and fruit? How can new plant be classified?
0
votes
1answer
64 views

Can I control my dreams?

Is it possible to completely realize that I am only dreaming and to completely manage my dream? Thank you.
1
vote
1answer
118 views

What determines whether I will have any dream or not?

Sometimes I have many consecutive "dreamfull" nights but sometimes there is no dream during week. Why? What determines whether I will have any dream or not?
3
votes
3answers
166 views

Do animals also dream?

By "dream", I mean: Dreaming while sleeping. Dreaming about their future life while being awake. Thank you in advance.
-5
votes
2answers
104 views

Can a person be infected with HIV viruses without contacting them by person-related stuffs? [duplicate]

We know that a person can be infected with HIV viruses when he/she has sexual relationship with those having HIV viruses (and very, very, very rarely, urine/defecation-related transmission) - but I ...
7
votes
2answers
205 views

Could cancer be in itself a evolutionary process?

Could cancer be in itself a evolutionary process? Maybe in some way could it be a process of variation? Or would this idea be completely without support, if so, why? I don't mean that each case ...
5
votes
1answer
49 views

Why is clownfish attracted to actinia?

I heard that Actinia Equina normally eats what it can catch, but this clownfish here doesn't care much about that: https://www.youtube.com/watch?v=Ughm4mnZ1ls Since the actinia obviously can't hold ...
4
votes
1answer
48 views

Is there a type of amnesia that seperately affects long-term memory?

Is there a medical condition that affects the long term memory, but leaving the short-term and working memories totally or fairly intact?
3
votes
1answer
132 views

Accurate Human Skull Model for Educational Purpose

I want to buy a model of Human skull for education purpose. However, I really want a very accurate model and at a decent price. I got the info that many of the available skulls in the market are not ...
2
votes
1answer
54 views

What are the longterm effects of pancreatitis?

As the title asks, what are the longterm effects of pancreatitis? Having one event, is the person more susceptible to have a recurrence, or are they at higher risk of other conditions such as ...
9
votes
1answer
365 views

How do pineapples and lemongrass grow?

You can't plant the leaves, you can't plant the fruit, but, if you plant the part where leaves and fruit meet you will grow a whole pineapple plant. The part of the pineapple where the leaves meet ...
1
vote
1answer
80 views

Eye Brain Mapping

If our eyes are separated by some kind of full proof barrier/isolation, is it possible that our brain can picture/visualize two different pictures at a time? How the brain will function in this ...
8
votes
1answer
2k views

Is it true that oral sex exists in non-human animals?

For example, outside of humans, do other species of animals engage in oral sex, or any oral stimulation of others' genitals purely for pleasure, not any cleansing habits, etc.? Basically, what I am ...
1
vote
1answer
105 views

Statistical Analysis of Protein Folding Problem [closed]

I’m new to the field of protein folding. I’ve been searching and came across some books for predicting structures (Introduction to Protein Structure Prediction: Methods and Algorithms). Does anyone ...
1
vote
1answer
92 views

Modeling yeast biochemical pathway using enzyme kinetics

I need enzyme concentration and metabolites concentration values to en-corporate these values in my model and do some simulation. I searched through some database yeast metabolome database ...
7
votes
1answer
1k views

How do people who have lost both of their legs produce red blood cells?

As far as I know, just leg bones produce red blood cells. So, how people who lost their both legs produce red blood cells?
4
votes
1answer
73 views

Transcriptionally-mediated DNA damage

I'm researching the genetics of brain cancer, and finding a huge number of mutations in voltage-gated channels. It stands to reason that some of this DNA damage is due to the DNA being transcribed ...
5
votes
1answer
74 views

How does the human liver regrow?

I understand that there would have to be a portion of liver present to regrow from, so how much liver would the minimum to be able to regrow? By what mechanism does regrowth occur?
2
votes
1answer
603 views

What do rs id, allele coded 0 and allele coded 1 mean?

So, for a project I've been working on (different story), I've been looking at the HapMap Project, and their free online files. In their README file, they talk about how for each legend file for each ...
3
votes
0answers
53 views

Can ingestion of B6 cause gastrointestinal disturbance? [closed]

Can the ingestion of vitamin B6 upset the stomach, and if so by what mechanism?
2
votes
1answer
1k views

Why is allolactose the LacI inducer?

For what reason(s) is allolactose, instead of lactose, the "natural" inducer of lac operon repressor?
0
votes
2answers
77 views

What nutritious insects exist to farm that require the least attention?

What nutritious insects exist to farm that require the least attention? I'm looking to automate simply, in a self regulating way. Edit: To add detail, I imagine the insects would live densely in a ...
3
votes
1answer
113 views

Keyword based literature search [closed]

I understand this is not a biological question but this is often a problem whenever I look for literature. How to look for a reference for some fact based on keywords. For instance you know about a ...
4
votes
1answer
742 views

Why is funnel web spider venom so lethal to humans and not so much for other mammals?

According to the information from this article, People and other primates are exquisitely sensitive to funnel web venom but, intriguingly, other mammals such as mice, rabbits, guineapigs, dogs ...
1
vote
1answer
68 views

Information Gene HBA2

Gene : HBA2? hemoglobin alpha 2 (Homo sapiens) I don't find any tissues (or organs) in which the expression of this gene is strongest? What is the size of the gene (promoter off) encoding this ...
4
votes
1answer
2k views

What part of the brain controls depth perception?

Specifically the part of the brain that does depth perception based on binocular vision. I have searched all over the web and have turned up nothing. Is it the same part of the brain that processes ...
3
votes
1answer
378 views

Is a “Fact” any theory for which there is overwhelming evidence in any field other than biology?

Evolution is often described as a fact, and a theory. Evolution is a heavily overloaded term, with one definition being the fact that, "changes in the frequency of alleles in populations of organisms ...
2
votes
2answers
859 views

Are human males and females more genetically different than members of other species?

I'm looking at this Ted talk about a Saudi Arabia woman who dared to drive a car in the last few years. This reminds me that until the last century or so, women (all over the world?) enjoyed less ...
3
votes
2answers
253 views

By what mechanism does coeliac disease cause excess fat in the feces?

Wikipedia states that “Severe coeliac disease leads to the characteristic symptoms of pale, loose and greasy stool (steatorrhoea)”. However thumbing through the causes and the pathophysiology it did ...
3
votes
1answer
185 views

Precursor miRNA and a mature miRNA

What is the main difference between a precursor miRNA and a mature miRNA? It is often the case that we have more than one precursor miRNA but only one mature miRNA. The miRNA-seq data contains only ...
6
votes
1answer
2k views

Why do neurons have a negative resting potential?

Neurons expend the majority of their energy powering ion pumps to maintain the chemical gradients that power their electrical activity. To have a negative resting potential, neurons leak potassium ...
1
vote
0answers
95 views

What is neutral genetic differentiation?

What is neutral genetic differentiation? Presumably it's a measure of the distance between organisms in terms of their genetics, but what does 'neutral' refer to?
1
vote
2answers
793 views

Why do antibiotics have a special importance when taking lactulose?

“Before taking lactulose, tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially antacids, antibiotics including neomycin (Mycifradin), and other ...
1
vote
1answer
479 views

Why do antacids have a special importance when taking lactulose?

“Before taking lactulose, tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially antacids, antibiotics including neomycin (Mycifradin), and other ...
2
votes
0answers
85 views

How is ammonia removed from the colon?

“Lactulose is also used to reduce the amount of ammonia in the blood of patients with liver disease. It works by drawing ammonia from the blood into the colon where it is removed from the body.” ...
8
votes
2answers
260 views

How do ants sense imminent rainfall?

I have always been told to watch to see if ant-hole mounds are built up as a sign of imminent rainfall. My questions are, if what I have always been told is true, then by what mechanism do ants ...
3
votes
0answers
90 views

Eye color genetics

I am trying to find a model to link the phenotype eye color to its genotypes. I know that there exists a simple model from Davenport, which explains {brown,blue} eyes. Further, there is an extended ...
0
votes
1answer
54 views

Is every cell competent?

I would like to know if every cell is competent or if there are any cells that are not competent.
2
votes
1answer
76 views

Animal UV vision

It is reasonably well known that many species, such as bees and some types of birds as examples can see into the ultraviolet (UV). How is the structure of their eye different to humans to allow this? ...
2
votes
1answer
109 views

Electron transport in granal stacks

See paper for distribution of PS-I and PS-II within grana As explained in the above paper, the PS-I complex is primarily located within non-appressed thylakoid region and stroma lamella, while PS-II ...
5
votes
1answer
92 views

Photosynthesis regulation

I read about the regulation of Calvin cycle by thioredoxin which activates key enzymes essentially by converting disulphide linkages on inactive enzymes into sulfhydryls. Another regulatory mechanism ...
2
votes
1answer
570 views

What is the relationship between UV wavelength and penetration depth into human skin?

Some background - Some recent research has strongly suggested that UVA penetration into the skin is far more dangerous than UVB, a very good example is this paper by Agar et al. (2004). My query is, ...
2
votes
2answers
98 views

E. coli, risk of infection?

There has been a warning about E. coli contaminated water in South Florida. Now I'm wondering are there empirical data or historic cases which show a correlation between E.coli levels in tap water and ...
2
votes
1answer
54 views

Deep diving in mammals

Mammals like seals often dive and can remain under water for more than 70 minutes. How do seals know when is it the time to come up?
2
votes
2answers
6k views

Can the excessive consumption of mineral water lead to kidney stones or other health issues?

I heard that drinking too much mineral (bottled) water could lead to problems such as kidney stones because of the high amount of minerals in it. Is it true? If so, what is considered to be excessive? ...
1
vote
2answers
134 views

Which texts are good for beginners to understand evolution on the genetic scope?

Are there good texts to study the evolution, how it works, and how mutations and changes lead to evolution of the organism ? And how does the information increase through the long time using ...
4
votes
1answer
189 views

How is consciousness linked to the brain?

Could the brain be working without consciousness? Does the brain interact with consciousness? Alternately, is it that consciousness can't really control the brain, and you only have the impression ...

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