All Questions
0
votes
2answers
29 views
What nutritious insects exist to farm that require the most minimal attention?
What nutritious insects exist to farm that require the most minimal attention? I'm looking to automate simply, in a self regulating way.
Edit: To add detail, I imagine the insects would live densely ...
0
votes
1answer
63 views
Writing methods section on PCR amplication in a paper
Considering that I am writing a paper for a journal, could the following phrase be understood? or should I put the 'step-by-step' way by giving numbers?
PCR Amplification and sequencing
PCR ...
-1
votes
0answers
13 views
Warning using DWD matlab package and results matrix not fully non negative
I am getting a strange warning using the DWD method (Distance Weighted Discrimination) to reduce batch effects on microarray data.
I am using matlab package provided here.
When I call BatchAdjustCC ...
-1
votes
0answers
9 views
Multiple Systems Atrophy - clinical trials [closed]
My dad is currently suffering from MSA (multiple systems atrophy), a degenerative neurological disorder. He's lost a scary amount of weight, down to 118 lbs right now, and is starting to lose his ...
1
vote
1answer
17 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
28 views
Can ingestion of B6 cause gastrointestinal disturbance?
Can the ingestion of vitamin B6 upset the stomach, and if so by what mechanism?
0
votes
1answer
40 views
How does hair grow and is it similar to how grass grows?
If I recall correctly, nails (finger nails or toe nails) grow by adding matter at its base. So for instance, if you would draw a dot at the very bottom of your nail, it would end at the top in a ...
3
votes
2answers
58 views
Is there any kind of immortality in plants?
I asked a question about immortality of hydra and leaned good things about senescence. Now I like to know about immortality signs in plants. If there is some kind of immortality in plants its process ...
2
votes
1answer
99 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 ...
5
votes
1answer
112 views
What is the life-span of the various organs in the human body?
It is possible for a person to donate the harvestable organs (kidneys, eyes, and such) posthumously. Let's assume for a moment that the technology exists to kill rejection, and maintain the organ in ...
4
votes
1answer
42 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 ...
4
votes
1answer
304 views
Is it possible for any animals today to have more than one brain?
Is it possible for any organisms in the animal kingdom to have more than one brain?
0
votes
1answer
20 views
Like modern microprocessors, do human brains execute a similar form of “microprograms” as well?
A microprogram is the operation of microcode. That is, hardware and circuit specific operations implemented underneath machine code to tie the operations to the circuit and electronics themself ...
2
votes
1answer
19 views
Why is allolactose the LacI inducer?
For what reason(s) is allolactose, instead of lactose, the "natural" inducer of lac operon repressor?
2
votes
2answers
94 views
Do both TSG and Proto-oncogenes have to suffer mutations to cause cancer?
I'm having a conceptual nightmare trying to understand when a group of cells may become cancerous and the more resources I consult the more confused I seem to get.
In order for a cell to become ...
2
votes
3answers
73 views
Primer design for Gibson assembly
I'm trying to design a primer for Gibson assembly. My gene of interest is on a plasmid, and I want to copy that gene, and put it into a different plasmid.
I am unsure how to design my primers for ...
3
votes
1answer
107 views
Why re-label the strand ends in 3' DNA labelling?
I have a problem with a molecular biology question; I don’t understand how DNA 3’ labelling works.
I took a diagram from my lesson and tried to understand with it; this is what I understood.
If I’m ...
0
votes
1answer
83 views
TCGA data, and bioinformatics design questions for SNP/ mirna analysis
It's my first time posting to this forum but was looking for some help on the data aspects of this project.
My tools of choice would be in python/R .
Goal: I'm looking to create a disease specific ...
0
votes
0answers
20 views
Why do antacids have a special importance when taking lactulose?
“Before taking lactulose, tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially antacids, antibiotics including neomycin (Mycifradin), and other ...
3
votes
0answers
35 views
Keyword based literature search
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 ...
-1
votes
0answers
27 views
Does Regocin-F cream harmful to human body, if applied daily? [closed]
I have a wound that requires to apply Regocin-F cream daily . I found that if I stop using the medicine, the wound will deteriorate.
My question is, is the Regocin-F cream harmful to human body ?
...
2
votes
2answers
58 views
Are human males and females more genetically different than members of other species?
I'm looking at this Ted talk about a Saudi Arabia woman who dared to drive a car in the last few years. This reminds me that until the last century or so, women (all over the world?) enjoyed less ...
7
votes
1answer
326 views
How Does Green Tea Increase Metabolism?
According to the article "Green Tea Supplementation Affects Body Weight, Lipids, and Lipid Peroxidation in Obese Subjects with Metabolic Syndrome", Green tea increases metabolism and fat loss:
...
5
votes
1answer
213 views
How does plant grafting work?
Plant grafting is a process whereby a piece of one plant is inserted into another and results in a change of the original plant. For example, grafting a piece of a lemon tree into a bitter orange tree ...
0
votes
2answers
36 views
Why do antibiotics have a special importance when taking lactulose?
“Before taking lactulose, tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially antacids, antibiotics including neomycin (Mycifradin), and other ...
9
votes
1answer
131 views
In which order did the cells of the immune system evolve?
Thinking about how complex the interactions between different types of immune system cells (T-helpers, T-Killers, Phagocytes, B-Cells etc.) are, it's fascinating how they all combine to get the ...
0
votes
1answer
50 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 ...
6
votes
1answer
69 views
DNA modifications other than 5-mC/5-hmC/5-fC/5-caC in vertebrate genomes?
Other than 5-Methylcytosine and the more recently discovered 5-Hydroxymethyl, 5-formil and 5-carboxylcytosine DNA modifications found in DNA sequences, what are other DNA modifications present in ...
3
votes
1answer
51 views
Precursor miRNA and a mature miRNA
What is the main difference between a precursor miRNA and a mature miRNA?
It is often the case that we have more than one precursor miRNA but only one mature miRNA. The miRNA-seq data contains only ...
3
votes
1answer
52 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 ...
2
votes
1answer
36 views
Animal UV vision
It is reasonably well known that many species, such as bees and some types of birds as examples can see into the ultraviolet (UV). How is the structure of their eye different to humans to allow this?
...
2
votes
0answers
22 views
How is ammonia removed from the colon?
“Lactulose is also used to reduce the amount of ammonia in the blood of patients with liver disease. It works by drawing ammonia from the blood into the colon where it is removed from the body.” ...
2
votes
2answers
49 views
By what mechanism does coeliac disease cause excess fat in the feces?
Wikipedia states that “Severe coeliac disease leads to the characteristic symptoms of pale, loose and greasy stool (steatorrhoea)”. However thumbing through the causes and the pathophysiology it did ...
4
votes
0answers
38 views
Why do neurons have a negative resting potential?
Neurons expend the majority of their energy powering ion pumps to maintain the chemical gradients that power their electrical activity. To have a negative resting potential, neurons leak potassium ...
5
votes
1answer
112 views
Is local equilibrium a reasonable assumption for evolutionary processes?
Whenever I look at discussions of fitness landscapes (in particular, Kauffman's NK model) the questions tend to resemble:
The population is at a local equilibrium, but another equilibrium of ...
1
vote
3answers
160 views
How did this spider evolve to mimic exactly a human face and arms?
So I came across something terribly amazing today, that is, a video showing this species of peacock-spider, that literally, transforms into a human face waving his arms about.
What could have ...
3
votes
0answers
28 views
How do ants sense imminent rainfall?
I have always been told to watch to see if ant-hole mounds are built up as a sign of imminent rainfall. My questions are,
if what I have always been told is true, then by what mechanism do ants ...
1
vote
3answers
102 views
0
votes
2answers
54 views
What beetle is this?
I've found it in my kitchen. It seems to be that he flew through the window from the street.
The country is Russia.
0
votes
1answer
70 views
What insect is this?
I found it in Russia.
Where they usually live? What they eat?
Full length is approximately 2 cm.
0
votes
1answer
28 views
Is every cell competent?
I would like to know if every cell is competent or if there are any cells that are not competent.
1
vote
0answers
14 views
What is neutral genetic differentiation?
What is neutral genetic differentiation? Presumably it's a measure of the distance between organisms in terms of their genetics, but what does 'neutral' refer to?
3
votes
1answer
63 views
When does weak selection produce qualitatively different results from strong selection?
In evolutionary game theory, it is typical to model organisms as having a base fitness that is modified slightly by the game interaction. The ratio of the game effect versus the base fitness ...
2
votes
1answer
2k views
What is the functional difference between hemoglobin and ferritin?
I read that both hemoglobin and ferritin are for storing iron in the body. So, what is the difference between them in terms of storing/binding iron?
2
votes
2answers
71 views
E. coli, risk of infection?
There has been a warning about E. coli contaminated water in South Florida. Now I'm wondering are there empirical data or historic cases which show a correlation between E.coli levels in tap water and ...
3
votes
1answer
102 views
Why is saltatory conduction faster than continuous conduction?
How does spacing apart sodium and potassium channels allow the action potential to travel faster down the axon? This is the reason always cited for saltatory conduction and myelination, but my mental ...
3
votes
3answers
134 views
Why do neurones use chemical signalling at synaptic junctions?
Problem. When a neurone fires, it sends an electrical signal that jumps down the axon via the nodes of Ranvier very rapidly. At a synaptic junction, chemical brownian diffusion signalling with ...
3
votes
1answer
76 views
Are there natural selection experiments that quantitatively agree with theoretical modeling?
Has anyone ever conducted an evolution experiment and quantitatively compared it to theory? For example, has anyone ever put bacteria in a million petri dishes filled with antibiotics and calculated ...
2
votes
0answers
25 views
Eye color genetics
I am trying to find a model to link the phenotype eye color to its genotypes.
I know that there exists a simple model from Davenport, which explains {brown,blue} eyes. Further, there is an extended ...
1
vote
0answers
31 views
Electron transport in granal stacks
See paper for distribution of PS-I and PS-II within grana
As explained in the above paper, the PS-I complex is primarily located within non-appressed thylakoid region and stroma lamella, while PS-II ...
