0
votes
0answers
4 views

What are the features of a specific neurological signal?

My question is about the neurogical signals. In our body when a signal for example a hearing signal from haircells is built , it goes through a lot of neurons and it pasees a lot of crosses ( I mean ...
0
votes
0answers
5 views

What fraction of sites are expected to be polymorphic?

Consider a very long unlinked DNA sequence of neutral sites. Consider $N$ as being the size of the population of interest. What is the fraction of sites that we'd expect to be polymorphic in the ...
0
votes
0answers
10 views

About the small intestine's Vitamin K absorption and large intestine's Vitamin K absorption

Why in the small intestine does Vitamin K absorb to the lymph, while in the large intestine it absorbs to the blood?
0
votes
1answer
10 views

Is 100% accuracy in DNA sequencing possible?

I would like to obtain a complete genome of a canine (with mitochondrial DNA too) at 100% accuracy. Is it even possible with the current technology? The source I have is potential degraded, i.e. dried ...
0
votes
0answers
7 views

Which taxonomic classification schemes are most accepted?

The taxonomic classification schemes followed by universities around the world are different. I wish to know what are the most accepted classification schemes till date concerning the following - ...
2
votes
1answer
12 views

Physiology of tricuspid and bicuspid(mitral) valves

The tricuspid and bicuspid valves are atrioventricular valves. Both are valves that prevent backflow of blood pumped from the atria to the ventricles. However, the former has 3 "flaps" while the ...
0
votes
0answers
8 views

MIN 6 cell culture

I am trying to culture MIN 6 cell line. After one passage and about 5 to 8 days later the cells show round morphology,however I did not found any linkage between them they look all apart from one ...
4
votes
2answers
81 views

How does decreasing surface tension of lipids help to emulsify them?

According to my chemistry book, water has higher surface tension than lipids. But in my biology book it is written that "the gall forms an emulsion of water and lipids by lowering the lipid's surface ...
0
votes
0answers
13 views

Book recommendation on the human muscle system

I would like to learn more about the exact mechanism behind our movements, especially about what happens during intense training when anaerobic state arises.
1
vote
0answers
10 views

Negative association between habitat quality and reproductive success in birds

I'm looking for bird studies that have found either a negative correlation or no correlation between habitat quality and reproductive success. Or in other words, bird studies that have found that ...
3
votes
1answer
14 views

Need some good resources to learn about Protein function and structure

I'm taking a course on biochemistry at edx. Since I'm a computer science student, I'm having some trouble in understanding many biochemical concepts. While the first module was just fine, I found the ...
0
votes
1answer
11 views

seqtk trimfq using Parallel fastx_trimmer [on hold]

I'm new at this, and I'm trying to do RNASeq. I've done the quality analysis already with fastqc. Now, I'm on the quality control part. I need to use seqtk trimfq or fastx_trimmer to trim the first 5 ...
-1
votes
0answers
26 views

How do formic acid from ants causes acids? [on hold]

Ants release acids but how do they work? Ants release them for protection but how does it affect others?
-1
votes
0answers
22 views

Inducing Totipotency and Pleuripotency [on hold]

Totipotent cells can divide and differentiate into any type of cell. Pluripotent cells can divide into many types of cells. Is there any way to induce any of these? If yes, how?
-2
votes
0answers
23 views

How does carrying sea anemone help Hermit Crab? [on hold]

Sea anemone is carried by hermit crab. what is the advantage?
0
votes
0answers
39 views

Why does somebody have to take a live-long medication when diganosed hypothyroidism? [on hold]

My wife was diagnosed hypothyroidism 2 years ago by her general practitioner and she has to take L-thyroxine to compensate that. It started with 50mg and as she went to further examinations to check ...
2
votes
0answers
33 views

Skin extra sensitive to heat after burn

I just got my finger burnt (first degree burn $\Rightarrow$ I didn't even bother to bear the wound). It didn't hurt much, even when I pressed the wound. However, when exposed to heat (hot water, but ...
1
vote
1answer
32 views
4
votes
0answers
49 views

What is basis of centralization of “master glands” in the endocrine system?

I have just started reading about the endocrine system and I am having some difficulty understanding the basis of distribution of glands and associated hormones. I am using centralized to describe ...
6
votes
1answer
35 views

Do butterflies pass over migration patterns to their offspring?

So, earlier, I read online (http://io9.com/butterflies-remember-a-mountain-that-hasnt-existed-for-509321799) that Monarch butterflies veer east during their southward migration to avoid a mountain ...
6
votes
0answers
21 views

How does chromosome fusion get fixed in the population?

It's well known that one of human chromosomes is the result of fusion between two chromosomes in a primate ancestor. If we put anthropocentrism aside, it becomes clear that fusion events happened a ...
2
votes
0answers
36 views

Efficient algorithm to calculate various population divergence statistics

Intro and description of the data I am simulating the evolution of very long DNA sequences. The model works well, is performant and will output data in the following kind of fasta format ...
4
votes
0answers
19 views

Spatial learning in microorganisms

Has there ever been an experiment performed that demonstrated a form of 'spatial memory' in a unicellular organism? I'm imagining something analogous to the classic 'rat in maze' experiments, but ...
0
votes
0answers
22 views

How to measure the biomass of hydroponic plants in netpot/rockwool DWC system?

I'm doing an experiment with 4 kale plants, each in their own small deep water culture (DWC) system. Each plant was transplanted in rockwool with netpots and clay pebbles. But I need to periodically ...
4
votes
1answer
44 views

Did any dinosaur molt?

Like snakes or lizards, did any dinosaur molt ? if yes, have we any proof of it ?
6
votes
1answer
49 views

What is the biochemical explanation for tingling and burning sensation in brain due to certain food?

Consumption of mustard (spicy English Mustard), wasabi and horseradish based food dressings usually result in a burning, tingling or freezing sensation in the brain/scalp and nostrils as the vapour ...
-3
votes
2answers
45 views

Transfer by Ingestion [on hold]

Does our body absorb GM dna or Natural dna or dna of someone else's human blood(not relatives) taken with food so big that it has genes?
0
votes
1answer
54 views

At what saltiness will water simply pass through us?

If water has a low salt content, it hydrates us. When water has too high salt concentration, like sea water, it drains water out of us instead when we drink it. At what salt concentration would water ...
2
votes
0answers
12 views

Which hydrophobicity scales are best for detecting transmembrane regions, and why?

There are many hydrophobicity scales for protein analysis. Broadly, I gather the differences between them are from the experimental method to acquire the data and the normalisation (or lack thereof) ...
-1
votes
0answers
42 views

What biology should be known by a newly married couple? [on hold]

What is the minimum useful biology that a couple entering married life must know? I guess the knowledge must pertain to a basic understanding of the nature of reproductive system and use of ...
2
votes
1answer
102 views

Why do some people burn and others tan?

Connected to What is happening when we get a tan? - Why do some people burn while other people tan? Very pale people tend to just burn while other people tan very nicely, what causes this difference? ...
0
votes
0answers
19 views

Cut-off values for LD, LOD and D-prime as algorithmic input

I created an algorithm to generate SNPs for random people of different descents - based on HapMap data. While this works good, there is something else I want to take into consideration. So if a SNP ...
11
votes
3answers
2k views

What is happening when we get a tan?

Almost everyone nowadays wants that nice summer tan, but what exactly is going on beneath the skin? I've heard a few different theories about tanning - such as a tan is nothing but the pigmentation in ...
0
votes
2answers
57 views

Evolution of insects, spiders and jellyfish

Well we all learned at school the classic evolutionarily theory ...
0
votes
0answers
10 views

What is the concentration of leptin in white adipose tissue in mice? [on hold]

I am trying to perform an ELISA experiment and for this I need to know the physiological concentration of the hormone leptin in white adipose tissue in mice.
3
votes
1answer
159 views

Beetle with long, slender iridescent green body and orange legs

I recently saw this beetle while on a trip in central Texas, USA (in a rural area just before sundown). The body was about 2-3 inches long (compare to nearby chair leg and floorboards) and had a long ...
3
votes
0answers
38 views

How many animal species are larger than humans? [on hold]

I sometimes think about just how huge humans are in comparison to most animals. Even compared to a squirrel, which is really a pretty large organism in the grand scheme of things, humans are hulking ...
1
vote
1answer
39 views

Choosing the best assay for my experiment?

Which of the following assays can be used to determine whether cell death specifically due to apoptosis has occurred in a given cell sample? Choose all that apply. WST-1 Assay Caspase Colorimetric ...
3
votes
0answers
74 views

What is the name of this bird?

Does anyone know the name of the bird in the pictures? It was found in the south of Spain in the month of June. (it is certainly neither a house sparrow nor a swallow nor a robin). Thanks for the ...
2
votes
0answers
25 views

Is perceived time compressed or expanded while dreaming? (or does it match reality) [on hold]

I often dream long extended dreams. Sometimes I wonder if the timeline of the story of my dream occurs compressed, in a moment, or other times extended slowly over a long duration. Is there any way ...
1
vote
1answer
31 views

Design arbitrary degenerate primers (with non-binding criteria)

I would like to design a number of arbitrary degenerate primers (primers with variable bases, e.g. NGATWGCTSATNGC) for a TAIL-PCR. I would like to be able to ...
1
vote
1answer
50 views

Why does my anti-ubiquitin antibody visualization not work on my PAGE gel?

I am using 2D gel electrophoresis to visualize polyubiquitinated proteins. However, while I can see actin and heat shock protein using when appropriate antibodies, I cannot visualize them using ...
9
votes
2answers
752 views

Linear and Circular DNA

So school has taught us that eukaryotes have DNA that is linear and inside of a membrane - called the nucleus. And that prokaryotes have circular DNA that is free floating inside of the cell. We ...
-2
votes
0answers
28 views

Plankton growth as a function of temperature [on hold]

i have data set of tempaerature and phytoplankton species abundance for different months of different years. I want to plot growth rates as functions of temperature for all species. How I can do ...
6
votes
1answer
255 views

How bad is ethidium bromide in your plasmid for downstream applications?

I want to transfect Adipose Derived stem cells using a clone of my own. My problem is that I get a lot of contamination (not only genomic, but due to the nature of the technique, I get undesired ...
1
vote
1answer
52 views

What concentration of table salt is needed to kill bacteria in sweaty gym clothes?

My gym clothes retain an unpleasant musk even after washing them with warm water and detergent. I've experimented with soaking my gym clothes in salty water before washing them. My hypothesis is that ...
7
votes
2answers
1k views

Is this a crayfish hole? or wasp nest?

I'm suspicious that it might be crayfish, which I'd think was insane (I still kind of do), if I hadn't found a dead one around my house earlier this summer. Is that definitely what it is, or do I ...
1
vote
2answers
119 views

What is a substance that is safe to eat, not absorbed and not metabolized?

I would like to know whether there are substances that are safe for humans to consume, are not absorbed and do not interact with any digestive process. So, food is disqualified because although it ...
2
votes
1answer
41 views

(How) Does the human digestive system process petroleum jelly, aka petrolatum?

Does the human digestive system processes petroleum jelly? In other words, does it pass through the digestive system without any interaction, or is it absorbed and/or metabolized?
1
vote
2answers
44 views

Which ORF will be translated

I've a question about ORF and translation into protein. Say I have an RNA transcript that contains two ORFs, one in phase 1 ; one in phase2 ; as: ORF number 1 in reading frame 1 on the direct ...

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