4
votes
1answer
54 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
224 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
384 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
127 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
133 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
118 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
65 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 ...
8
votes
3answers
418 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
55 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 ...
4
votes
1answer
103 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 ...
13
votes
1answer
263 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
723 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
69 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
38 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
251 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
452 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
425 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
7k 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
97 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
81 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
151 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?
7
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
213 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
120 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
105 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
50 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
135 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
376 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
106 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
93 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
74 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
75 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
627 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
771 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
382 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 ...

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