2
votes
1answer
67 views

Aside from cockroaches and other insects, which species (of all kinds) are 'immune' to ionizing radiation?

I have just been reading this excellent question and answer about cockroaches ability to withstand ionizing radiation. My question is an extension of that question: aside from insects, which other ...
3
votes
1answer
832 views

What is the exact principle of capillary isotachophoresis?

I know it's a type of capillary electrophoresis, but I don't get how does the separation happen exactly.
0
votes
1answer
140 views

How do you remove DNA/RNA from plastics?

I want to know how to make plastic containers free of DNA & RNA? this is just for knowledge
3
votes
2answers
76 views

Why not use Cu(OH)2 as a dye for protein electrophoresis?

As I know, $Cu(OH)_2$ $+$ Protein $\rightarrow$ Purple. So why not use $Cu(OH)_2$ as dye in protein electrophoresis?
3
votes
1answer
140 views

Why Is The Toughness Of Skin Different On Different Parts Of The Body?

My cat was licking my arm with his sandpaper like tongue. It hurt and the area he was licking was slightly smarting afterwards. However, when he licks the palm of my hand the feeling is rather ...
5
votes
2answers
1k views

What is dental health like in animals?

Do animals suffer from tooth decay, such as cavities? Is it to the same extent as in humans, or do animal teeth decay more or less? If teeth decay in animals as well, are there natural strategies ...
11
votes
4answers
164 views

Is there any other function of DNA?

We all know that DNA acts as a genetic molecule. Does DNA have any other function in the cell other than being a genetic material and carrier of information?
14
votes
2answers
309 views

Can parts of a human brain be asleep independently of each other, or vary in the times required for them to fall asleep?

I know that some birds and marine animals can continue complicated activity (swimming, flying?) while one hemisphere of their brain is asleep. I'm interested if human brain has some parts of it that ...
2
votes
1answer
1k views

fibroblast cells and fibers

I am interested in fibroblast cells in human arteries. Here are the things that I am not clear at the moment and I could not find any answer from the literature: What are the dimensions of these ...
1
vote
1answer
2k views

What is a pA(2) value?

I saw this article http://www.ncbi.nlm.nih.gov/pubmed/16710314 and it mentioned pA(2) values and I had no idea what they were. What are they? What do they mean? If possible it'd be just dandy if you ...
4
votes
1answer
66 views

Why don't individuals with sickle cell trait suffer from sickle cell anemia?

Ostensibly, in people with sickle cell trait, half of the hemoglobin in their body would be defective. Is it actually the case that sickle cell hemoglobin is produced in equal amounts? If not, how ...
3
votes
1answer
94 views

Chromatin shearing: what is it and what are the effects of high-sensitivity?

I am reading a paper which discusses a complex (MSL-DCC) involved in dosage compensation of the drosophila X-chromosome. Descriptions of the complex's structure and function are given in the papers ...
6
votes
1answer
3k views

What causes the colors we see in eyes?

Genetics aside, what are the biochemical reasons the different colours of human irises? Also, related, how does eye colour change, particularly in childhood? (example: my eyes used to be blue, ...
8
votes
2answers
159 views

Can life subsist on anything else but water?

Inspired by an answer to a previous question. It's hypothesized that extraterrestrial life could be based on silicon rather than carbon as its main structural element. Are there similar theories ...
1
vote
0answers
55 views

When a Lysosome's bonding sites all get bonded to, what is the most resource and energy efficient way to handle the used Lysosome?

Let's say a Lysosome that bonds to a hazardous material to neutralize it has all bonding sites used up. would it be more safe / efficient to excrete the entire Lysosome / hazardous material molecule ...
7
votes
1answer
146 views

Why must a planet be in a star's “habitable zone” to have life?

I have seen many articles that talk about a star's "habitable zone" as the ring around it which is just the right temperature for planets to have liquid water, which is necessary for life. My question ...
8
votes
1answer
494 views

Could humans and chimpanzees hybridize?

In some cases two species can hybridize. For example, Tigers and lions can hybridize to produce "Ligers". Would it also be possible for humans and chimpanzees (or any other species) to hybridize ? ...
5
votes
2answers
534 views

Possibility and feasibility of producing designed antibodies with bacteria

As stated here it is possible to produce fragments of antibodies in bacteria and harvest them (from the medium, I guess, but I don't have access to the full article). As it is possible to design ...
4
votes
1answer
49 views

How different are tissue-specific fibroblasts from each other?

I am planning to utilize a new system in our lab, in which I will co-culture cancer cells from different tissues with fibroblasts. I have the option to receive skin-derived primary fibroblasts. I ...
3
votes
0answers
168 views

Can someone explain the color-changing unit (CCU) to me?

I've been physically carrying out serial tenfold dilutions on samples of Ureaplasma to work out the color-changing units (CCU). As a definition, the CCU is the highest dilution at which there is a ...
7
votes
1answer
292 views

What is the name of the appendage that mantis shrimp use to rub their eyes?

In this short clip, you can see the mantis shrimp using some sort of feathery arm/claw to rub its eyes. Looking at a diagram here, it appears possibly that it's using maxillipeds. Someone with ...
1
vote
1answer
120 views

Single Nucleotide Polymorphisms and diseases

I am writing a report on how Single Nucleotide Polymorphisms occurring in each of these regions: Transcription factor (TF) binding sites Epigentic signals Splicing variants MicroRNA binding sites ...
1
vote
1answer
102 views

Which kind of tick is this and what is that thing around its back?

I was recently bitten by a tick. After having removed it from my body, I put it in a glass. By now, it has stopped moving, so I put it under a microscope and looked at it. I was surprised about being ...
1
vote
1answer
101 views

Bacterial division and mutation rate

When a bacteria A divides it produces two cells A', A''. Each of them receives a copy of the chromosome/plasmids. Now, DNA replication occurs way before division in a semiconservative manner. That is, ...
1
vote
2answers
60 views

How can pasteurized milk last 7 days?

In Estonia, the product bought from the shop lasts about 2-3 days, in Finland 3-5 days and In Oslo Norway 7 days. The better infrastructure of transportation explains some for Finland and Norway. But ...
7
votes
2answers
314 views

Organism identification, what is this?

Im trying to find out what this is, see image below. Im thinking these are either some insect eggs or some sort of mosslike plant. The substance is stuck to a steel pillar, outside, about 5 feet ...
1
vote
1answer
51 views

What are the biological and nutritional benefits of having numerous smaller meals a day?

I have heard here and there that instead of consuming 3 largish meals (the traditional 3 meals a day), that consuming several smaller meals throughout the day is beneficial for health (and weight ...
1
vote
0answers
159 views

What naturally produced drug causes 'a tingleing euphoric rush' [closed]

What naturally produced drug causes a 'tingleing euphoric rush' through your body, as well as a 'wave of goosebumps'? I've always been interested in this sensation, two of the last times i can ...
4
votes
1answer
101 views

How animals maintain their body shape after development to maturity?

I've recently read a book on evolutionary-developmental biology for laymen, and it described how a fetus is progressively divided into more refined zones of genetic activity. These zones, kinda like ...
12
votes
1answer
232 views

Do fake wasp nests actually fool wasps?

I have seen fake wasp nests sold as a deterrent against wasps and similar insects. Do they really work? Is there some scientific evidence for it? A related link: ...
5
votes
1answer
560 views

How do individual plants adapt to changes in temperature?

If you grow a plant from seed in your nice warm house, then plant it out in your temperate garden, it will stop growing for a while, possibly die, and if not, subsequently resume growth. Standard ...
5
votes
1answer
65 views

How compatible are mammal wombs?

I had read about science working towards the creation of artificial wombs however I wonder how compatible are mammal wombs and connected systems to develop fetuses. What species are so compatible that ...
0
votes
1answer
36 views

Distribution of nutrients throuought a drink made of plants?

In an attempts to eat my veggies for the day in one shot, I blended together a bag of salad with some water. The mixture separated by density, a thick top layer containing the bits of leaves, and a ...
2
votes
1answer
200 views

How do PLINK files and HapMap Phased files differ?

I know that PLINK and HapMap files show the same information, but can you give a thorough explanation of how exactly they differ.
7
votes
2answers
360 views

Do teeth have the capacity to heal?

Could a cavity in a human tooth "heal over" or possibly fill back in?
4
votes
2answers
336 views

Is life expectancy linked to intelligence in animals?

For example, animals that live only a few days or a few years are often not very intelligent. In contrast, the most intelligent animals seem to live longer. Is this true? Are there any studies to ...
6
votes
1answer
5k views

Why can cats interpret things on a monitor/tv, but dogs cannot?

E.g. you can see a lot of videos where cats are smashing some mouse or spider on an ipad, but I have never seen it with a dog. I have a dog myself and I know that he sometimes responds to the sounds ...
2
votes
2answers
87 views

Can humans' ability to dive with only breathing modifications tell us anything about our evolution?

Can humans' ability to dive with only breathing modifications tell us anything about our evolution? For example, it is possible to imagine a human anatomy that would be destroyed by the pressure of a ...
2
votes
1answer
80 views

What type of distribution should binding affinities fit?

I've been averaging Ki values from the PDSP Ki Database, and I can't help but to wonder: how I can determine p values for the binding affinities, so I can exclude anomalies in the data if need be?
3
votes
1answer
129 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
979 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 ...
4
votes
1answer
1k 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, ...
3
votes
1answer
145 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
58 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
102 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?
2
votes
2answers
125 views

Do animals also dream?

By "dream", I mean: Dreaming while sleeping. Dreaming about their future life while being awake. Thank you in advance.
-4
votes
2answers
87 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 ...
5
votes
2answers
142 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
40 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
47 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?

15 30 50 per page