3
votes
0answers
20 views

Can microdialysis be made in Drosophila melanogaster?

I've asked this before in stack overflow's cognitive science community, and someone recommended me to ask here: I've found a couple of studies using microdialysis on insects, but didn't found any in ...
0
votes
0answers
7 views

Does the Y chromosome carry structural information, or only switches + traceable ID?

The Y chormosome almost doesn't crossover with the X chromosome, and so the evolution of anything it encodes must be much slower, because by the Hill–Robertson effect beneficial mutations must occur ...
3
votes
1answer
23 views

Does osmosis take place in prokaryotic cells?

As far as I know, osmosis occurs in Eukaryotic cells, and I'm wondering if it could take place in prokaryotic cells too.
0
votes
1answer
38 views

Can a guy be turned into a girl near perfectly? [on hold]

I have always been told that during gender realignment there is some damage to the body which is why even if you had all the money in the world you can't keep changing between male and female. ...
0
votes
1answer
16 views

Membrane Potentials

I know this may be silly, but I am confused to what a membrane potential actually is. I understand that at resting membrane potential is -70- -80 mV. But what does that exactly mean and how does this ...
4
votes
1answer
40 views

What is this creature?

Since it has six legs, I believe it's some sort of insect, but I could be wrong. I spotted it in my Central Texas backyard (Austin area). It was very slow and not at all skittish. For size ...
0
votes
1answer
34 views

Can viruses infect bacteria?

Can standard viruses infect bacteria? I'm not speaking of bacteriophage but typical RNA and DNA virus such as influenza and Ebola.
1
vote
1answer
10 views

can a bacterial protease inhibitor cocktail be used for Western Blotting involving HUVEC cells and HT-29 adenocarcinoma cells?

Dear fellow biochemists, I need some advice on Western Blotting, more specifically the use of certain protease inhibitors with the RIPA cell lysis buffer and protease inhibitor cocktail. A Millipore ...
0
votes
1answer
37 views

Does E. coli survive at any pH level?

Does E. coli survive at any pH level? If I was to incubate it in agar of different pH, would it still form a bacterial lawn as it's called?
0
votes
0answers
12 views

Is there a natural defense against an increase in E.Coli level in natural water systems?

I was recently on an Oceanology coliform collection vessel in the Long Island Sound and I found out that human waste contains E.Coli and when not properly treated the bacteria can run off or ...
3
votes
2answers
302 views

19th century Latin species description

While reading a 19th century text of new species description, I'm confused by some Latin phrases. The case here is: Corp. long. 8 poll., caud. 9 poll. I guess 'corp.' and 'long.' are ...
1
vote
1answer
25 views

Modelling how much cadmium a cell will be able to chelate with phytochelatins

I am involved in a synthetic biology project where I have to do modelling with ODEs. The biological process I want to model is the chelation of Cd2+ with phytochelatins, to know how much can be ...
0
votes
0answers
23 views

Is it possible to convert nerve signals or electrical pulses into a readable format? [duplicate]

Can we have the technology to recreate the informations (like images, sounds etc.)[as in the form of signals in our mind] from human mind to human understandable format? In short, can we read human ...
2
votes
1answer
43 views

NMR spectroscopy detection methods for proteins

While studying, I've stumbled upon a table comparing the sensitivities of different detection methods in NMR spectroscopy: "Direct", "DEPT" and "Inverse", where "Inverse" seems to be the most ...
1
vote
0answers
27 views

Are there any species which can live off rocket fuel and cosmic radiation? [on hold]

It was recently reported that cosmonauts have found sea plankton on the outside of the space station. Space agencies are nowadays very careful to sterilize their interplanetary landers, and orbiting ...
0
votes
0answers
13 views

Bipolar minus end directed molecular motor

like the title explains I am looking for a minus end directed bipolar molecular motor. Any ideas? Best wishes.
1
vote
1answer
17 views

How to identify the genes that distal enhancers pair?

I am writing a project proposal and I have to talk about this problem: how to identify the genes that distal enhancers pair? I am really new to this topic and I don't know what it is all about. I ...
3
votes
1answer
14 views

How do nicks in the DNA strand affect the success of Long Range PCR?

Long Range PCR using NEB Master Mix - Hot Start Taq was working fine for me (amplicon sizes of ~10kb) but stopped working all of a sudden. Is it possible that many freeze-thaw cycles on the DNA ...
-2
votes
1answer
27 views

What prevents this blue lobster from becoming dominant?

Like everyone else in the world I saw the blue crustacean from becoming dominant? I would think the blue camo would be an evolution advantage.
2
votes
0answers
15 views

What should be the distance between plant promoter and gene?

I am trying to clone a rice gene under a different endogenous rice promoter.I will be cloning the CDS of the rice gene.So I wanted to know what is the minimum or maximum distance I should put between ...
1
vote
1answer
29 views

Will the Millipede called Cyanide Millipede harm humans?

Will the Cyanide Millipede harm us? If it doesn't, then why is it given the name Cyanide millipede?
2
votes
1answer
20 views

Enzyme Assay, absorbance change to concentration change

I have a few issues with this question. An enzyme assay is performed and the kinetic data graphed. The y-intercept of a Lineweaver-Burk plot is 0.6 min/ΔA. The substrate being assayed has a molar ...
2
votes
2answers
488 views

What happens if a person has the right side of the body totally removed (including the brain)? [on hold]

I guess humans could live without just the right lobe of the liver or the right brain. Could a person without the whole right side of body survive? The left brain controls the right side of the ...
0
votes
1answer
35 views

Global Acidification or Warming [on hold]

Which poses the greater threat to ecology Global Ocean Acidification or Warming?
3
votes
1answer
39 views

Looking for protocol to produce a drosophila primary cell line

I'm looking for a general (and easy, this is going to be for an undergrad class) protocol to isolate and culture primary cells from fruit flies.
3
votes
1answer
44 views

Main mechanism of the evolution of sexual dimorphism

Sexual dimorphism is very common and (normally) requires the evolution of sex-specific genetic variation/regulation so the genetic correlation between the sexes can be <1. Is there consensus as to ...
1
vote
1answer
19 views

How long does it take for commercial fertilizers to break down? [on hold]

Sometimes we buy carrots that are abit bitter, it's the taste of fertilzer. Once i put a tomato in the fridge, and when i ate it, it was bitter like shweppes, and i figured that was fertilizer also. ...
1
vote
1answer
16 views

Calories burn rate calculation — scientific studies

There are many online calculators for measuring walking/running/bicycling calories burn rate. They differ in input parameters like some might need my weight as well as height and some don't. Almost ...
1
vote
2answers
20 views

Deduce length order of 4 decapeptides based on the Ramachandran plot

I have stumbled upon the following past exam question: 4 decapeptides A, B, C, D, made only of glycine residues, have different conformations, and the phi and psi angles of individual peptides ...
7
votes
2answers
41 views

Is mammalian vision processed as a sequence of frames?

I often read that people believe that human vision has an inherent frames-per-second rate (FPS) that causes stroboscopic effects - such as seeing the spokes of a rotating wheel apparently rotating at ...
2
votes
2answers
30 views

Western Blot: Fischer ECL substrate 2:1 instead of 1:1?

i recently developed a b-actin-ab-incubated PVDF-WB-Membrane with the Thermo Scientific Pierce ECL Kit. According to the manufacterers orders i mixed Reagent 1 and Reagent 2 1:1. But unfortunately i ...
1
vote
2answers
38 views

what is the modern, molecular explanation of independent assortment of alleles?

in case it isn't obvious i'll begin by stating that i'm a layman, trying to understand something about this subject from reading books. the books i've looked at so far give murky and confusing ...
-1
votes
0answers
39 views

Is there any evidence that soft tissue can be preserved for 65m+ years and if not what hypotheses exist to explain it?

I read an article on howstuffworks.com and they mentioned how we have found soft tissue in dinosaurs. According to the article even Mummies and Mammoths have no soft tissue left. Is there any evidence ...
0
votes
1answer
9 views

Rhizosphere vs. Endorhiza?

In microbiology and the naming of the various areas of the plant as it relates to microbial inhabitance, I am confused as to the difference between the terms endorhiza and rhizosphere. In this case I ...
1
vote
2answers
22 views

Does bioluminescence communcation occur on macroscopic level?

Some bacteria are known to communicate using bioluminescence (quorum sensing). Do we observe the same phenomena in any macroscopic species?
1
vote
0answers
15 views

Given a microscopic image of a plant, is it possible to determine its age?

Given a microscopic image (let's assume a standard brightfield image) of a plant, is it possible to determine its age?
0
votes
5answers
64 views

How much does a typical biologist know about signal processing, machine learning, and (theoretical) computer science? [on hold]

How much does a typical biologist know about signal processing, machine learning, and (theoretical) computer science? Coming from a neuroscience background where knowing about algorithms and computer ...
1
vote
2answers
25 views

How much are phase-contrast and dark-field microscopy used in biological research? [on hold]

How much are phase-contrast and dark-field microscopy used in biological research today? It seems these were invented a long time ago, so I am thinking would it be a good idea to learn these ...
1
vote
1answer
26 views

How to measure the total number of cells in an average human body?

I have got one assignment to calculate the approximate sum total of all cells in the human body. How to tackle this problem? I know that the current statistics is $10^{13}$ cells. I wanted some hints. ...
2
votes
0answers
17 views

Subtypes of Acute myeloid leukemia

I am a computer scientist with no biological background and working on analyzing lab results of patients with Acute myeloid leukemia. They have been tagged with following subtypes of AML: AML with ...
15
votes
2answers
2k views

Why was disease transfer to the Americas one-way?

It is well known that the European colonists brought many infectious diseases to the Americas, and that these had a deadly effect on the native populations, because they had no immunity to them. Were ...
1
vote
1answer
32 views

Applying drugs to brain via scalp (transdermal)

Many medications are intended only for the brain, but are taken orally. Hence <10% finds its intended target, while the remaining >90% is at best wasted, and at worst causes unwanted side-effects. ...
1
vote
0answers
19 views

How is a tanglegram calculated?

In this question, it was asked what are some good softwares for calculating tanglegrams. What is a tanglegram? How is it calculated? It looks like some kind of double-dendrogram. Do I get a Nature ...
1
vote
1answer
35 views

How do I interpret this graph regarding introduced genes and virus-infected cells?

This graph appeared in a practice test for the MCAT. I am trying to interpret it, but it confuses me a bit. On the x-axis we have some introduced genes, and on the y-axis we have % of cells ...
2
votes
1answer
22 views

Sansevieria species specification needed

What are the botanical differences between the species S. parva and S. senegambica? Please highlight the main ones. I have 2 groups of plants. One with label "Sansevieria dooneri" (a synonym of S. ...
1
vote
1answer
29 views

Do alternative start codons code for methionine after transcription?

There is some literature which shows that all start codons code for methionine. However, in the standard genetic code, the alternative start codons clearly code for leucine. Does that mean these ...
1
vote
0answers
31 views

How to stop or slow down the process of growth of hairs? [on hold]

Is it possible to slow down or stop hair growth? If yes, then how is it achieved?
1
vote
2answers
71 views

What is the reproductitive advantage of grey-haired humans

A vast majority of humans get at least some grey hair as they age. AFAIK this applies to both genders and all races. Presumably this means that at least some grey haired humans have noticeable ...
2
votes
2answers
33 views

Why isn't Bubonic Plague as virulent as it once was?

Although I am admittedly not anywhere near an expert on any topic, I still have a hard time understanding how Black Death and Bubonic plague are one in the same. Since plague still exists, with news ...
3
votes
1answer
30 views

What is the ratio of breathing rate to heart rate?

Breathing rate and heart rate are directly connected. This is because the heart is connected to the lungs via the pulmonary artery. I first thought that breathing rate would be half of the heart rate ...

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