1
vote
0answers
3 views

Tissue grafting in marine invertebrates

I'm trying to source a procedure for a transplanting tissue in regenerating polyps. Would anyone happen to know where I can find a method of adhering to donor to host tissue? Thanks
1
vote
0answers
11 views

Diversity within and between allelic classes?

I am reading this paper. They talk about diversity within and between allelic classes. Nucleotide diversities ($π$) at each neutral site were estimated from the mean of $2 \sum z_t (1-z_t)$, over ...
0
votes
1answer
34 views

Why does the number of mutations per individuals follow a Poisson distribution?

I was reading this review. On page 11, left column, first paragraph, one can read: [..] there is a Poisson distribution of the equilibrium number of mutations per individual, if fitness effects ...
4
votes
1answer
13 views

Do any amphibians start their lives on land?

Most amphibians - at least, all the ones I know of - start their lives in the water (at least, after they hatch). They then spend time maturing before venturing onto land, where they can breed. The ...
-1
votes
0answers
13 views

What causes the skin to become red and swollen at the site of bite of a ant or mosquito?

When an ant, bee or a mosquito bites or stings, toxins are injected into the site that lead to irritation, itching or pain. However, do inflammatory reactions also play a role in the occurrence of ...
1
vote
2answers
25 views

How does a smoker's finger or mustache get yellowish by nicotine?

Tobacco use is the leading cause of preventable death around the world.$\ce{^1}$ The stain is considered as a "tell-tale" sign for identifying smokers. Multiple materials stated that it's due to ...
0
votes
0answers
14 views

Microwave and Health [on hold]

Is it unhealthy to eat food heated in the microwave? What dangers does the microwave pose to health? Does the microwave adversely affect the chemical structure of food?
-2
votes
0answers
11 views

Reversible biological module in KEGG

Considering the kegg module M00570 The pathway looks like this: ...
2
votes
1answer
15 views

Map gene IDs to Ensembl gene ID

Forgive me if this question is too trivial. I have the gene IDs of the following type EOG6STSR2 EOG60ZRJB EOG6SBFJ2 EOG6P5KX3 EOG6B5PRW from the first ...
0
votes
0answers
7 views

What is the permeability of proteins across the hyaloid membrane of vitreous to retina?

Does anyone know of any experimental work to test the permeability of the hyaloid membrane between the vitreous humour of the eye to the retina to proteins? Currently the largest molecule I can find ...
-1
votes
2answers
56 views

Driving force for SPECIATION for million of species today

I would like to know if speciation really occurs (trans-speciation). Have we had enough time for millions of species? A creationist argument is that the slow changes in traits in organisms, taking ...
0
votes
0answers
17 views

Can my eyes adjust instantly to my friend's glasses?

My eyesight is pretty much perfect, but I noticed that whenever I try any of my friends glasses, from really thin to extremely thick, my eyes seem to adjust to them within seconds and let me see ...
1
vote
0answers
5 views

What are the limiting factors of pathogen population size in human populations?

I understand that one limiting factor in non-human animal populations is that increased pathogen populations decrease animal populations from killing them, which decreases the density of the animals, ...
5
votes
3answers
157 views

Is NADPH salt still usable after an hour at room temperature?

I accidentally left a delivery of NADPH Tetrasodium Salt (Santa Cruz Biotechnology) at room temperature for a little over half an hour. In addition, when I opened up the package, I briefly held the ...
0
votes
0answers
27 views

How to color a white peacock feathers with pigments?

How to color a white peacock feathers? Question that I have, is based on this article about mechanism behind peacock feather colors. http://www.webexhibits.org/causesofcolor/15C.html The main idea ...
1
vote
0answers
11 views

Obtain detailed acyclic graph from nipype [on hold]

The nipype documentation tells me that with workflow.write_graph(), I can obtain acyclic graphs like this: However, my workflows, (all containing ...
0
votes
0answers
17 views

How does the apotase function? [on hold]

We all know that apoptase is the most contributing factor for apotosis. But how does it work? Is it similar to perforation of the mitochondria?
4
votes
2answers
39 views

Why are the sex chromosomes called X and Y?

Is there a specific reason that the letter Y is used as the symbol for the male chromosome and X is used for the female chromosome?
0
votes
0answers
39 views

Endogenous PAF inhibitor in metastatic process (?)

When neoplastic cells cause a metastasis, they can create a protective coat of platelets that counterbalances immunitary response. My question is if the coat formed due to PAF can be undone by an ...
-1
votes
0answers
16 views

Is it possible for me to grow another inch? [on hold]

I'm 14 and a half, 5'6, and got my first period at 11 and a half. My mother is 5'5 and my dad's 5'10. Can I still grow another inch? If it helps I was 5'4.5 for 2 years but i grew the inch and a half ...
1
vote
0answers
11 views

What is the general mechanism behind perfusion PET imaging

I understand how tracer kinetics can be used to determine binding potential but how it can be used to detect perfusion eludes me.
2
votes
1answer
34 views

Can geckos climb a wet surface?

We know geckos can climb vertically or even upside down a surface like glass. But can they do that on wet glass?
0
votes
1answer
42 views

What is the definition of the life biologically ? [duplicate]

I want to know what is the definition of the life biologically , on the other hand , what is the definition of the death biologically ?? However, I think it is a very difficult question to answer . ...
0
votes
0answers
9 views

Colormetric assay for a phenol product?

I am working on an assay for phenol products created by a colony of bacteria. I have searched up a paper that involves gibbs reageant but the protocol is kind of unclear. Does any of you know where I ...
0
votes
0answers
23 views

How much would a Gigantopithecus be able to lift?

How much weight would a Gigantopithecus blacki be able to lift? Size comparison of G. blacki vs human: https://en.wikipedia.org/wiki/Gigantopithecus#/media/File:Gigantopithecus_v_human_v1.svg Its ...
0
votes
0answers
25 views

What's it like to be a synthetic biologist? [on hold]

I find the field of synthetic biology very interesting and I would like to know what people in the field work on. Where do you work and what do you do there? What did you study to become a synthetic ...
2
votes
0answers
31 views

What is this flower?

I was in Germany recently, and I saw again a flower that I'd only ever encountered before at Meijer Gardens. It's interesting to me because I'd never seen a flower with color variation in only the ...
4
votes
1answer
50 views

Why is the pituitary gland located in the brain?

Why is the pituitary gland located in the brain in humans, instead of elsewhere in the body? Why would this be an evolutionary beneficial adaptation?
1
vote
0answers
7 views

Two different Leucochloridium infected snails - different species?

In the last three days, I have found two snails infected by some species of Leucochloridium. I found them in my garden in the south-west of Sweden. Now I'm wondering if they are the same species or ...
3
votes
1answer
46 views

Can axons act as receptors?

In all histology books, it is stated that all sensory nerve endings (receptors) are made of dendrites which conduct sensation from environment to body but it doesn't seem to be true. For example, the ...
1
vote
1answer
19 views

How to validate the use of an anti-virus monoclonal antibody in IHC by spiking a fresh organ with infected cultured cells?

I have assessed the specificity of a particular monoclonal antibody against a virus by immunofluorescence. I'd like to further validate it by testing it by IHC. Therefore I'd like to infect cells in ...
0
votes
0answers
14 views

What is the effect of the RNA 2' OH group on its structure and stability? [duplicate]

I've read that the 2'-hydroxyl group plays "fundamental roles" in both the structure and the function of RNA, and that it is a major difference between RNA and DNA. I would like to know more ...
3
votes
2answers
36 views

Bernoulli’s Principle in the Cardiovascular System

Below are graphs which illustrate the cross-sectional area, velocity, and fluid pressure through each vascular segment of the cardiovascular system. It makes sense that velocity and cross-sectional ...
0
votes
1answer
29 views

What is the surface area of the vitreous humour in contact with aqueous humour?

This is a question regarding the anatomy of the human eye, however for my purposes medium sized mammals should do. I am interested in estimating the surface area of the hyaloid membrane of the ...
-3
votes
0answers
30 views

What would be a Latin (Linnean) alternative for “The Talking Ape” instead of Homo Sapien (The Wise Man)? [on hold]

I would like to start a change.org petition to downgrade the name of our species from homo sapien, the wise man, to something that is more appropriate, like the talking ape. Reason: Not only is ...
1
vote
0answers
12 views

About binary fission in amoeba [on hold]

We know that amoeba reproduces by binary fission. Then does it mean that it never dies but keeps regenerating? In other words and more generally, does reproduction by fission by unicellular organisms ...
12
votes
1answer
112 views

Identify ~6-7mm long green creature

Here is the creature I found on the glass lid of my light bulb. I guess they are attracted to light as they all concentrate on the light source. I live in Hong Kong. The brown things aren't moving ...
0
votes
2answers
81 views

What is the DNA Sequence for an apple?

The title says it all. I'm just curious. I read that scientists mapped the genome for Malus Domestica, but I can't find a sequence anywhere.If this is a stupid question, I would appreciate if you tell ...
1
vote
0answers
17 views

Through which mechanisms did the Drosophila Histone Cluster evolve?

The Drosophila Histone Cluster is a gene cluster that contains more than a hundred copies of a sequence that encodes several histone proteins. These copies are very similar. My question is what ...
2
votes
1answer
45 views

Why does a wound itch while it's healing?

During healing of wound (almost in final stage) it begins to itch a lot around wound. I wondering what the reason for this is?
-1
votes
0answers
24 views

Eye Accomodation [on hold]

I tried to make a quick search in Google without too much luck, so i stumbled upon here. I am able to accommodate my eyes at will, even though with some constraints: -Accomodation works better for ...
0
votes
0answers
19 views

Nagalase testing any good?

Is Nagalase testing good to detect if something is wrong in the body (ex: cancer)? The next problem I assume would be to know what/where the problem is. To put it an other way: If I understand ...
0
votes
0answers
8 views

Why are porphyrins colored when porphyrinogens are colorless? [migrated]

In Haem synthesis porphyrinogens are colorless but on their oxidation (removing 6 hydrogen atoms) they become colored porphyrins ,also, is red the only color the turn into or it depends ?
5
votes
1answer
95 views

Can someone tell me the species of this lizard?

It's a green lizard with a silver tail, and it has pretty, bluish eyes. I saw it today, July 26th, trying to get some shade on a hot, sunny day (32 degrees) at around 18:00 in Austin, TX USA. It's ...
1
vote
1answer
72 views

Why are nitrogenous bases of DNA hydrophobic if they can hydrogen bond?

Why are nitrogenous bases of DNA hydrophobic if they can hydrogen bond? Is it that they are only relatively hydrophobic? This forum explains it but does not give an example of the structure.
1
vote
0answers
22 views

Biological implementation of convolutional neural networks

In computer science, 'convolutional neural networks' are used, that are meant to be inspired by biological network structures like found in the human brain visual cortex. In the computer ...
3
votes
1answer
61 views

Is there a schema for how human behavior is genetically determined?

It seem one can distinguish three different kinds of genetic determinism of common patterns of human behavior: behavior that is directly wired into our nervous system, e.g. face-related mirror ...
7
votes
1answer
64 views

What bacteria do unborn babies contain?

This Scientific American article states that "[human] infestation [by bacteria] begins at birth". This would suggest that unborn babies are free from any bacteria. However, if the mother catches a ...
1
vote
1answer
13 views

What is the spacing between stop codon and transcription terminator?

When one tries to express a protein from a synthetic plasmid in E. coli, how many base pairs should there be between stop codon and the transcription terminator site?
2
votes
1answer
54 views

Is nuclear DNA immuno-privileged?

It is well known that if DNA occurs in the cytoplasm of eukaryotic cells, an immune response may be triggered through a myriad of DNA receptors and pathways as part of the immuno response. Yet, ...

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