-3
votes
0answers
8 views

What is this caterpillar?

Found in Colorado but may be from out of the U.S. Can we save it? What kind is it? I can send a picture of it if you email me back.
4
votes
3answers
75 views

Are mitochondria dead?

In the video "What is Life? Is Death Real?", the subject of mitochondria is raised at 2:58. At 3:12, the narrator says "[mitochondria] are not alive any more: they are dead." What currents of thought ...
1
vote
1answer
40 views

Will a 0.2g/mL sugar concentration cause vomiting in humans?

This infographic claims that the sugar content in a can of Coca Cola would cause vomiting if not for the phosphoric acid. In The First 10 minutes: 10 teaspoons of sugar hit your system. ...
1
vote
1answer
17 views

What is the name of this flower?

A flower has grown on a leaf in our garden. What is the name of this flower? Give some description.
3
votes
1answer
156 views

Have webs woven by LSD-intoxicated spiders ever been studied for their efficiency in fly catching?

I ask, because I have a different interpretation of the experiments performed on web-weaving spiders. The famous Robert Pirsig maintains that LSD is somehow helpful to web-weaving spiders, because it ...
1
vote
1answer
19 views

Possible calculations with temperature, humidity, images and VIS spectrum of a plant in an Integrating sphere

I am currently working on a project which involves growing some plants in a integrating sphere made of foam. I have added temperature, humidity and soil moisture sensors as well as a Spectrometer (350 ...
6
votes
1answer
51 views

Flower identification: Moscow, Russia

I found this plant near the MSU, Moscow, Russia. Could someone help me to identify it?
0
votes
0answers
6 views

translation rate regulated by transcription factors?

I'd like to know if there is in the litterature some examples of transcription factors capable to impact not just transcription but also translation rate so that both can be adjusted. I would be very ...
6
votes
1answer
61 views

Butterfly identification: Dorset England, July.

Can you please identify this butterfly. It was seen in Dorset England 9th July. I think it is a female Silver Studded Blue.
1
vote
1answer
16 views

Calculation of final magnification when using a CCD camera

I'm trying to empirically calculate the approx final magnification (mag) of digital images rendered through our confocal microscope. Using a micrometer and the microscopy equipment I have, the ...
0
votes
0answers
15 views

Dominant epistasis problem [on hold]

An inhibitor of pigment production in onion bulb I exhibits dominant epistasis over another locus, the genotype iiRR producing red bulbs and iirr producing yellow bulbs. A pure white strain is crossed ...
5
votes
1answer
175 views

Approximately how long do bacteria live for? [on hold]

I would like to know how many days or years do the bacteria live approximately.
0
votes
2answers
23 views

Merge several .ab1 sequence files into a single FASTA file?

I have several .ab1 files generated from Chromas. I want to merge all of them into a single FASTA sequence file. How can I do this in an automated way? Note that I don't have Chromas installed (the ...
1
vote
1answer
35 views

Can my eyes adjust instantly to my friend's glasses? [on hold]

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
17 views

What happens when a genome is shorter than the other?

Say there were 2 creatures of the same species. Creature 1 has a longer genome than creature 2, it may be just a few base pairs, but what would happen when the genes were crossed to create creature 3 ...
7
votes
3answers
53 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 ...
2
votes
0answers
18 views

What is this butterfly?

The following guys (about an inch long) were seen in the Willamette Valley of Oregon in summer. When one would fly by a resting one, they'd get into a high-speed little "dogfight". What genus might ...
3
votes
0answers
64 views

Why do people die? [duplicate]

what is the reason people die naturally even though they have no known disease? I see people become physically weak at times they get old and die eventually in case they are not attacked by any known ...
7
votes
3answers
88 views

Are low-intensity radio-waves carcinogenic?

A recent review article, Oxidative mechanisms of biological activity of low-intensity radiofrequency radiation reached a surprising conclusion our analysis demonstrates that low-intensity RFR ...
2
votes
2answers
61 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 ...
1
vote
0answers
16 views

Will bark-beetles infest the Methow Valley?

What is the Methow Valley (esp. Winthrop, WA) area's susceptibility to bark beetles? Did the 2014 Carlton Complex wildfires increase the vulnerability due to the large numbers of dead, dying, and ...
1
vote
0answers
19 views

Big cat in heat for months?

In this documentary about a lioness and a leopard the leopard is in heat for months. https://www.youtube.com/watch?v=MGqmylkOuKw Usually a big cat would be in heat for 5 days and then not in heat ...
1
vote
0answers
10 views

Why does a limb sting when it “falls asleep”? [duplicate]

Closely related to this question, but unanswered other than @Matthew-piziak providing a description and link that says: What is Paresthesia? Paresthesia refers to a burning or prickling sensation ...
2
votes
2answers
60 views

Is numbness the absence of one or all touch sensations?

I am studying the effects of tetrodotoxin and its symptoms when consumed. Numbness is one of the first sensations reported. But I googled numbness and I couldn't find information about whether this ...
-4
votes
2answers
87 views

Driving force for speciation for millions 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 ...
2
votes
1answer
87 views

Why are Merkel cells innervated by an axon, and not a dendrite?

Here are two images from Google. Afferent neurons receive input and send it to the central nervous system. Input is received by the neuron's dendritic end and send away centrally via axon terminals ...
4
votes
2answers
57 views

Can axons act as receptors?

In all histology books, it is stated that all sensory nerve endings (receptors) consist of dendrites that translate physical stimuli from the environment into neural signals. However, several sensory ...
10
votes
1answer
530 views

Why do antidepressants have a delayed onset of action?

Why do antidepressants take so long to reach efficacy? I've read of theories about it perhaps being due to the strength of negative feedback via serotonergic and adrenergic autoreceptors during the ...
2
votes
0answers
13 views

What induces parturition in humans?

I know that the release of oxytocin induces labor. But what induces the release of oxytocin? What is the trigger? And is it something that happens in the mother's body signalling that it's time to ...
0
votes
0answers
9 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 ...
5
votes
3answers
178 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
18 views

Does anyone use bootstrapping to report mass gain during experiment?

When performing an experiment to report gain of body mass in an experiment, do any of you know of a paper whose authors have used a bootstrap to improve their confidence intervals? I have a n = 10 ...
0
votes
0answers
20 views

Material with very small young's modulus [on hold]

I'm looking for a material with a Young's modulus of less than 100 Pa. I've looked at elastomers, but I haven't had any luck. Thanks for your help, I appreciate it.
35
votes
4answers
3k views

Why do smaller mammals move intermittently?

I was watching a nice little video on youtube but couldn't help but notice how snappy smaller animals such as rats and chipmunks move. By snappy I mean how the animal moves in almost discrete states ...
1
vote
1answer
50 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 ...
1
vote
0answers
9 views

Ancestral Allele and Hapmap

I notice on dbSNP rs6352 has an ancestral allele of G - http://www.ncbi.nlm.nih.gov/SNP/snp_ref.cgi?rs=rs6352 The hapmap in humans for this allele is very rare, the homozygous version practically not ...
1
vote
0answers
19 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
14 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 ...
3
votes
1answer
64 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 ...
3
votes
2answers
39 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
0answers
18 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?
-1
votes
0answers
13 views

Reversible biological module in KEGG

Considering the kegg module M00570 The pathway looks like this: ...
2
votes
1answer
21 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 ...
3
votes
1answer
67 views

Feeling of spicy

I have done a survey on my friend When everytime they eat something spicy, They will eat ice or drink icy water. First, Mostly they feel nothing but a cool sensation. However when they finished, they ...
6
votes
1answer
1k views

Do flies actually take off backwards?

I've been told that flies take off backwards, but I haven't really been able to prove it to myself. The closest I've gotten was noticing that they fly into window glass back-first, with their heads ...
4
votes
2answers
41 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?
1
vote
2answers
256 views

What percentage of human body's cells are contained in blood?

What percentage of human body's cells are contained in blood vs. the rest of the body?
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, ...
2
votes
1answer
35 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
0answers
29 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 ...

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