4
votes
0answers
128 views

Why do ants dig surface paths?

A few days ago I observed a corridor built and used by ants that went over a path in fields: Why do they build it? It seems it doesn't bring any considerable protection from the surrounding ...
4
votes
0answers
133 views

What is the mechanism by which Melatonin increases dream vividness and intensity in humans?

I'm looking at the wikipedia article on Melatonin and noticed that it mentions vivid dreaming caused by melatonin. I have the "Melatonin and the Biological clock" pamphlet referenced in the article, ...
4
votes
1answer
76 views

Can the kidneys utilize ketone bodies for energy?

Ketone bodies are water-soluble and should pose no problem to the kidneys because of solubility. If the kidneys are able to utilize ketone bodies for energy, then they must express the enzyme 3-...
4
votes
0answers
123 views

What are the mechanisms that cause bananas to ripen? How is or isn't it related to the banana peel ripening? [closed]

So recently our commercial kitchen got some bunches of bananas with a curious feature. On the inside they were firm and delicious (no jokes, please), on the outside they looked incredibly sickly. ...
4
votes
0answers
50 views

Are all Autoreceptors Downregulated by their Respective Endogenous Ligands?

I know that the 5-HT1A and $\alpha$2 adrenoreceptors receptors serve as autoreceptors for serotonin (5-HT) and norepinephrine respectively and are down-regulated by repeat exposure to their respective ...
4
votes
2answers
222 views

Biological key file format

I am in the process of creating biological key software tool for use on android devices. I would like to know if there are any established file formats for storing biological key data. Thanks
4
votes
0answers
34 views

Does Doxylamine have any Influence on the Monoaminergic System?

Does doxylamine have any affects on the monoaminergic system? Specifically I am interested in adrenergic or serotonergic activity but additional information on its dopaminergic activity won't hurt ...
4
votes
0answers
169 views

Organize sequence database [closed]

I recently took up the task of organizing the sequencing database for a research project. I am still quite unsure of which database type I should use for this. Some advices/recommendations would be ...
4
votes
0answers
83 views

What is the frequency of double-hets between parent and child?

Say both parent and child are genotyped for all SNPs. In this setup we are only looking at variant positions between one parent and child - so neither parent nor child are homozygous reference (no AA/...
4
votes
0answers
50 views

Is it possible to repopulate lactase in the stomach? [duplicate]

Possible Duplicate: Can an adult without genetic lactase persistence still develop a tolerance for dairy foods? In my younger years, I don't seem to have a problem drinking milk. Nowadays, ...
4
votes
0answers
356 views

What is the timing of information assimilation within a human brain? [closed]

A little background: I'm an avid dreamer and have great dream recall, sometimes up to 5-7 per night. In my experience, I can sometimes trace some elements of the dream to an event that occured ...
4
votes
0answers
319 views

How do I save a coffee damaged wasp? [closed]

I found a wasp in one of my coffee cups about 1 hour ago. There was barely any coffee left but it had managed to get itself pretty much drenched in coffee. I took it out. Put it on a piece of paper ...
4
votes
0answers
39 views

What metabolically happens when an egg fuses with the nucleus of a somatic cell

In stem cell biology, it is recognized that embryonic stem cells are transcriptionally inactive for the first 3 days of development. However, during somatic cell nuclear transfer, the nucleus is ...
4
votes
0answers
46 views

Determine which gene is in the middle complementation [duplicate]

Possible Duplicate: Crossing mutant strains on minimal media problem I'm studying this problem for my genetics final: My Attempt: The answer for part B is met2 and the answer for part C is ...
4
votes
1answer
589 views

Does Amphibian embryo's blastocoel become a primitive yolk sac without yolk?

The mammalian blastocoel becomes yolk sac without yolk according to my professor. I have not found any evidence that such a thing happens in amphibians like frog. I need to be able to compare and ...
4
votes
0answers
127 views

If D1 receptors stimulate adenylate cyclase (through GPCRs) and D2 receptors inhibit it, then why do mutations in both have similar effects?

D1 and D2 both refer to specific types of dopamine receptors. I'm sure it has something to do with the fact that the D1 receptors are in regions different from D2 receptors. I know that adenylate ...
4
votes
0answers
121 views

Could an organism theoretically produce a metamaterial-like structure? [closed]

I'm curious to know if this is physically feasible because during my reading up on synthetic biology and just general research i realise that life is capable of producing some exquisitely complex ...
4
votes
1answer
34 views

Species Identification: large shiny black beetle, Detroit USA

What sort of beetle is this? I live in a suburb of Detroit and found a whole bunch of these living under my lawn when I was replacing a section of it. I'm assuming these are also the source of the ...
4
votes
2answers
67 views

Do animals get Post Traumatic Stress Disorder after escaping from a life threatening situation out in the wild?

Can animals come down with PTSD in the wild by themselves? For example, would a gazelle that nearly pulls away from a cheetah at the last second and heard the cheetah's jaws clamping down at air right ...
4
votes
1answer
161 views

Identify the pink mold infecting refrigerated lemons [closed]

I made lemon juice 6 month ago. I just washed the lemon using brush and then cut them into pieces. Then I put one layer of lemon in the bottle followed by one layer of sugar Again one layer of lemon ...
4
votes
2answers
259 views

Why and how does complexity usually tends to increase through time?

The question of complexity is classic in the very first lectures of evolutionary biology where the teacher usually tries to tell the students that complexity does not necessary increases and that ...
4
votes
4answers
17k views

Why are mosquitoes repelled by smoke?

A well known way to have a rest of mosquitoes during camping is to stand in the fire's smoke. Moreover, I learned recently that shepherds in certain regions of Africa use the same tactic for cattle. ...
4
votes
2answers
85 views

Is it possible for two people to repopulate earth? [closed]

Today I was wondering this question whether it is possible for two people to repopulate Earth. What if everyone else disappeared, except for two people (man & woman)? Can they repopulate? In ...
3
votes
4answers
1k views

Refutation of Darwin's Random Evolution Theory [closed]

I saw this refutation online of Darwin's Random Evolution Theory and cannot see any holes with the logic. Can anyone crack this simple refutation? Refutation of the Theory of Random Evolution ...
3
votes
5answers
6k views

Can the third sex be categorized as Male or Female?

Hijra are people who have a penis (not sure if sexually active) but look much like a female (perhaps for some feminine biological property). Wikipedia says they are "physiological males who have ...
3
votes
3answers
562 views

Why are there no trees in Texas?

In Texas, there is lot of grassland and many cotton fields, which need a great deal of water. However, I have not seen any forests or areas with many trees. Why are there no forests or heavily-treed ...
3
votes
4answers
950 views

Which came first: The Chicken or the Egg? [closed]

Has there been any serious scientific inquiries into answering this age old question?
3
votes
2answers
132 views

Why are bacteria immune to snake poisons?

In a test I was asked why bacteria are insensitive to snake toxins. Is it their membrane that provides a barrier to the toxins? Or do snake poisons have specific targets and thus cannot bind to ...
3
votes
2answers
355 views

19th century Latin species description

While reading a 19th century text of new species description, I'm confused by some Latin phrases. The case here is: Corp. long. 8 poll., caud. 9 poll. I guess 'corp.' and 'long.' are ...
3
votes
1answer
2k views

Does a woman contain all the genes needed to make a man?

I know the answer of inverse is at here, but how about this question? I also read this question, can I imply to human that a woman can also contain all the genes needed to make a man? Edit: I ...
3
votes
3answers
872 views

If ants have an antibiotic gland, how can they spread hospital infections?

Wikipedia describes how antibiotics are produced in ants: "Metapleural glands ... are responsible for the production of an antibiotic fluid that then collects in a reservoir ... also referred ...
3
votes
3answers
237 views

Can/Have cancer cells be/been used in stem cell culture lines?

Since Cancer cells have unlimited growth potential, can they be induced towards totipotency and pluripotency? If so, can cancer cells be used in stem cell culture because of similar properties of ...
3
votes
3answers
12k views

DNA is charged negative. Where is all the positive charge in my body?

DNA is charged negative because of its phosphate backbone. Since charges need to be balanced (so that there are no charges building up somewhere), what is the positive charge which neutralizes this ...
3
votes
2answers
343 views

Changing the definition of life?

Viruses at this period of time do not fit the current definition of life. Much of the reasoning behind this is that we currently believe that all life must be made up of cells. Also, many biologist/...
3
votes
4answers
1k views

Are there any papers arguing against vaccination in French? [closed]

Disclaimer: This question is NOT about challenging the safety or efficacy of vaccines. It is only asking for tips on providing credible references that may show harmful effects of vaccination, if any. ...
3
votes
4answers
260 views

Why do some people find vegetables so repellent when evolutionarily they should find them an attractive and thus tasty food?

Why do certain people (especially kids) find vegetables so "repellent" when evolutionarily they should find them an attractive and thus tasty food? I ask this question because if Darwin's theory of ...
3
votes
3answers
141 views

How is the size of a gene defined?

Is there an agreed definition as to how many nucleic acid bases constitute a gene? If not, why not? I'm not sure I understand how the exact sizes of genes are defined.
3
votes
2answers
508 views

Key points of Wagner's theory of innovation

What are the key points of Andreas Wagner's "theory of innovation" from his book The Origins of Evolutionary Innovations? Specifically: What is new in his theory? What problems in evolutionary ...
3
votes
2answers
2k views

Why are viruses considered microbes?

My question is simple. Why is a virus considered a microbe? Considering a microbe is considered to be a "living" unit of life, which viruses are not.
3
votes
4answers
540 views

Is our genome decaying (see “Genetic Entropy”), and, if so, is this evidence for our genome being “young”?

In the book Genetic Entropy & the Mystery of the Genome the author says that the genome cannot be old because the genome is "decaying". Decay is a very subjective term, but in this case he means ...
3
votes
2answers
338 views

Why is there such an argument about evolution?

DISCLAIMER: I am a Christian, although I happen to believe that some form of guided evolution via natural selection is God's mechanism for creation. Now to my question, which is related to my ...
3
votes
3answers
101 views

Are there organisms that have incorporated plastic into their lives?

Are there organisms that have incorporated (manmade) plastic into their lives in any way? Either in their diet, or as a part of their body?
3
votes
3answers
358 views

Stardust or the elements in our bodies

How do we know we are made of stardust? As our cells divide, are our atoms repurposed from existing materials or spontaneously generated? Do we consume materials after we are born that contain ...
3
votes
4answers
558 views

Why is too much glucose harmful?

I learned the citric acid cycle in biotechnology school and how cells work; about ADP and ATP and how the Cellular respiration (C6H12O6 + 6O2 -> 6CO2+6H2O) works. I am interested in understanding why ...
3
votes
5answers
1k views

Does any animal species have two sexes and more genders?

Does it exist any animal species that have two sexes and a kind of different internal diversification in two genders or more? I mean no something like different-task-based diversity but something ...
3
votes
4answers
90 views

Can systemic intravascular thrombosis cause brain infarction?

I wonder if the thrombus can pass through the brain-blood barrier because I think small molecules like O2, CO2 and ethanol can pass it. Probably, in some diseases where the permeability of the barrier ...
3
votes
2answers
559 views

Do recessive alleles really exist?

This question may seem illogical to some, but I seriously have this doubt. I searched google for some proofs but they were extremely complex and I couldn't understand anything. I was just wondering ...
3
votes
2answers
840 views

How can fruit flies and mice share the same gene that says to build an eye if they evolved separately?

I saw a documentary where they inserted the gene of a mouse that basically is the starting "build an eye" command into a fruit fly, and a fruit fly eye grew. My question is, if eyes of different types ...
3
votes
4answers
7k views

Why do cell membranes have a lipid bilayer instead of a monolayer?

Many cells have a cell membrane composed of two layers of lipids. Why is it that they have two layers and not just one? What purpose do this arrangement serve?
3
votes
2answers
1k views

What are gram negative and positive bacteria?

I've just finished a course of double antibiotics for Helicobacter pylori in my stomach. I looked up H. pylori and found that it was a gram-negative bacterium. I looked up gram-negative and didn't ...

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