1
vote
1answer
13 views

What does the term 'modified residue position' in phosphorylation mean?

Does it mean the position of the amino acid in the protein sequence, or something else? For example, I came across the phrase "S 368 phosphoryation" where S is the modified residue and 368 is the ...
2
votes
1answer
51 views

Master Catalog of all Fossils / Literal Fossil Record?

Is there a website or other resource that catalogs all fossils ever found? Basically, is there a literal "Fossil Record"? Where do scientists gather their results from excavations? Are they just ...
0
votes
1answer
17 views

If two definitive ovums are fused will they form an organism?

Pretend that somehow in a laboratory two definitive ovums (finished 2nd miotic divisions) are are fused together. Will they form a new species?
1
vote
0answers
26 views

Assembling DNA fragments with ~10kb overlap in vitro

Let's say I have two fragments of bacterial DNA (~50kb in length each) that overlap on the ends by roughly ~10kb; the overlap sequences are unknown. I would like to assemble these into longer ...
0
votes
0answers
9 views

What is the general name of the chip to simulate organ systems by iPS?

I listened the last few Nature Medicine podcasts. They are talking about some chips that are used with iPS cells to simulate the action of antigens in organ systems. Is there any review articles ...
1
vote
1answer
31 views

regarding genetic disorders related to protein production

I am not completely familiar with biology, but i had a genetics course in college along with practicals. Forgive me if there is something wrong with my question. Is there a genetic disease which ...
1
vote
1answer
49 views

Do skull bones have pain nerves (nociceptors)?

I recently attended an awake brain surgery for deep brain stimulation and it seemed to me that only the skin surrounding the drilled hole got local anaesthesia. I know that the brain itself does not ...
2
votes
0answers
39 views

Odds of Fusion of Chromosome #2

There is strong evidence that chromosome 2 in humans is a fusion of two chimp chromosomes (i.e. common ancestor of chimps and humans) as explained at wikipedia here The question is what are the odds ...
0
votes
0answers
11 views

border zone of the infarcted heart

I did myocardial infarction experiments on mice and I am a newbie in this area. I need to isolate RNA and protein from the remote and the border zone. Where should I cut the heart so i can separate ...
3
votes
0answers
48 views

Accuracy of genome size estimation by flow cytometry

I'm working on a genome project and using an in silico k-mer analysis to estimate the size of our genome based on the available Illumina reads. The k-mer based estimate is consistent across a wide ...
2
votes
1answer
52 views

Biology Analogy

In my book are given several paired analogies with me being asked to give reason for them. I could solve all of them except this: liver = thrifty house-keeper I mean, I do not understand why the ...
3
votes
2answers
95 views

Effect of testosterone hormone on cell signalling and behaviour?

A steroid, testosterone was injected in female body which led to development of secondary sexual characters but these characters were not developed over night (Response was very slow). What could be ...
3
votes
2answers
47 views

How does a stonefish get oxygen out of water?

It is said that the stonefish (Synanceia) is able to stay out of the water for up to 24 hours. I wonder how they get oxygen from the air. Could someone explain this?
3
votes
1answer
49 views

How does boiling water revive cut flowers?

A classic tip to revive wilted cut flowers is to plunge the stem into boiling water for some period of time, and then back into cold water. What process is occurring that causes the flower to be ...
1
vote
0answers
12 views

Effect of lower back on Lymphatic drainage in Posterior Lumbalis

I am studying how the muscle spasm of lower back can affect the anterior lymphatic drainage in a male obese situation (supine position) and quality of sleep. There seems to be very little lymphatic ...
7
votes
2answers
219 views

Why does Hunger lead to the aggressive behavior?

I have observed that frequently when people are hungry; they tend to get angry more easily on pointless issues. Does this mean that our fight or flight response is more active when a person is hungry? ...
0
votes
0answers
50 views

Why the scent of mouth gets dirty after not eating for a long time?

After a long time of hard workout,not eating and nervousness makes your taste and scent of mouth very uncomfortable and bad why this happens and is there any way to prevent it?
0
votes
0answers
16 views

How to get the fish feed from carbohydrate rich plant?

Currently, I am working on Acanthopagrus latus fish feed formulation but unable to find any good resource online. Do you have any recommendations?
2
votes
1answer
46 views

Will ants arriving with travel luggage form a new colony?

I have found a few dozens of ants in my luggage after arriving back from holiday. Am I at the risk that they will form a colony in my home? Are those ants able to form colonies that are normally ...
1
vote
0answers
38 views

What “emotions” can a snake feel?

Short: Thinking in particular of a Royal Python (US: Ball Python) such as some people keep as exotic companion animals, what sorts of "emotions" or "feelings" are they capable of? Long: ...
3
votes
1answer
43 views

Does tea have its effect if you have a sleep after drinking it?

If I drink tea, then go to sleep for a while, when I wake up, will the effect of tea still be on me (the refreshing effect)? Does it depend on the duration of sleep?
0
votes
0answers
11 views

How Calcium regulated in myocardic AP and plateau phase?

The plateau phase is maintained by influx of calcium and outflux of potassium in the second stage: My conjuncture is that calcium transforms between two phases ionated phase (free calcium from ...
9
votes
2answers
1k views

How does a woodpecker not give itself concussions?

How does a woodpecker go about smacking it's head into a tree without killing itself?
2
votes
0answers
27 views

What bird makes this sound?

It sounds like some kind of crow but not really. Here is my recording: https://www.youtube.com/watch?v=4TsKFUugot8&feature=youtu.be#t=06s This bird always wakes me up at 04:00 and this started in ...
2
votes
1answer
28 views

What is the scientific name of this butterfly?

I have this butterfly but I don't know its scientific name. I think that it's a common butterfly which can be seen everywhere (btw, I'm in Taiwan.) Thanks for your help :D
1
vote
0answers
10 views

Review articles for best practices in modelling cellular signaling networks?

I wonder if you could suggest an accessible review article for best practices in computational systems modelling. Specifically, I would like to try to model a cellular signalling network that would ...
0
votes
0answers
11 views

Is there a definitive theory of how general anesthesia works?

Is it true that the method of action of general anesthesia is not exactly known? In other words, is there no conclusive theory of how it works?
2
votes
1answer
36 views

The pBR322 convention

What is the pBR322 convention? For example in the description of the pET28a vector we can find information that the sequence is numbered by the pBR322 convention, so the T7 expression region is ...
2
votes
1answer
49 views

A question about IPTG induction

I have found the information: `In the absence of lactose, the lac repressor binds to the operator sequence on DNA and bends the DNA by 40 degrees. This blocks access of T7 RNA polymerase to the ...
2
votes
0answers
18 views

Soft and Hard selection

Seems to me that these two sources (M. Whitlock, B. Wallace) use different definitions of soft and hard selection. M. Whitlock: Soft selection occurs when the relative fitness of an individual is ...
0
votes
1answer
52 views

what is the biggest known functional distance between an enhancer and its target gene (TSS) in cis?

since the title seems self explanatory; It would be nice if anybody could provide a reference. I'm looking for a paper that I belive stated around 1.5 Mb but anything above will be cordialy welcomed. ...
7
votes
2answers
1k views

How do we know the presence of light when our eyes are closed?

Last night I laid on my bed and tried to go to sleep with the light off. I closed my eyes (but hadn't gone to sleep). My younger brother touched the wireless mouse (which had laser) for the laptop. ...
1
vote
0answers
26 views

Effects on Bear Population [closed]

imagine in a given area or an ecosystem ,bear hunting is totally banned, but there is a scarcity of food for the bears. i want know what would be the future of the bear population?. and want to derive ...
0
votes
3answers
29 views

can recessive alleles produce codominance?

Maybe I'm confused by the term "codominance", but I wondering if codominance only occurs with two dominant alleles. Can two recessive alleles produce codominance in an individual? Likewise, can two ...
1
vote
0answers
17 views

Fast standing and the heart's insufficient accommodation of the increased venous return

Assume you are 45 minutes on the supine position. Furthermore: you stand all of a sudden and fast and without sympaticus activity. The venous return (smooth musculature of vessels) accommodates ...
1
vote
1answer
40 views

Does a top heavy population grow, decline or stabilize?

Imagine a population that has a larger proportion of older individuals than younger ones, what could possible happen to it in the future? I am guessing that if the older individuals reproduce, the ...
4
votes
2answers
51 views

Database of Multicellular and Unicellular organisms?

I'm trying to annotate a list of organisms taken from NCBI for cellularity (unicellular or multicellular). Does any of you ever found a database with association between an organisms' name or taxa and ...
1
vote
1answer
49 views

Convert gene name to uniprot ID

i have a list of gene name in a file CHRNB2 EGR2 GCK KRT14 LMNA FGF3 TK2 ABCC8 How can I map them to uniprot ID ? P.S I tried Uniprot "ID mapping" ...
2
votes
1answer
132 views

Why are men stronger than women?

What are the evolutionary explanations for why women are weaker than men (on average), and is this difference adaptive? I suppose that something puts pressure on men to be stronger than women, but I ...
1
vote
1answer
28 views

Can insects feel pain?

Insects do have a nervous system, even if it isn't nearly as complex as that of other animals. Can insects or other arthropods sense pain? Does their aversion to harmful stimuli suggest that they can ...
4
votes
1answer
50 views
1
vote
1answer
20 views

Why does temperature shock kill fish?

As is advised with most fish you should avoid sudden changes in water temperature (for example by introducing new water that hasn't been left to come to room temperature). I have, however, never ...
4
votes
2answers
845 views

If I squash an insect and it produces red “juice”, does it always mean it is a blood-sucking type?

If I squash an insect and it produces red "juice", does it always mean it is a blood-sucking type of insect? Or do some insects have red "juice" themselves, so the color is red on its own and not ...
2
votes
1answer
24 views

Heterochromatin production limitations

Currently playing with some ideas for a project and needed some guidance. I am wondering, both in Drosophila melanogaster and in general, is the amount of heterochromatin a cell/nucleus can produce ...
1
vote
2answers
89 views

Heterochromatin binding sites position information

I am working on a project and I'm trying to find data on the position of genes and heterochromatin binding sites such as HP1 in Drosophila melanogaster. Is this information available for the DGRP ...
1
vote
0answers
25 views

Kinesin-5 / cytoplasmic dynein spatial density distribution in neurons

is there some way to experimentally determine the density distribution of those two molecular motors in a Neuron? Fluorescence labeling would be impossible(?) as GFP markers would probably alter the ...
3
votes
3answers
138 views

Specificity of Protein Kinases in Signaling Pathways..?

In most of the signaling pathways the activated receptor when activates Protein Kinase through the action of secondary messenger, then these protein kinases almost always phosphorylate on the specific ...
0
votes
0answers
13 views

Are insects attracted to near infrared light?

Do insects see near infrared light? If yes, are they attracted to it at night, as they are to visible light sources? I am building something similar to a home-made trailcam with a Raspberry Pi ...
1
vote
4answers
67 views

Which point mutations in proteins are OK, and which cause significant change?

I heard that some point mutations in proteins are OK, like from alanine to glycine (I'm not sure, it's just an example), some will change the protein significantly. I want to understand deeper but ...
1
vote
3answers
42 views

FRET only works for interactions between 1nm to 20nm.

FRET only works for interactions between 1nm to 20nm. How can you be sure that the interaction that you want to study isn't less than 1 nm/greater than 20nm apart?

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