1
vote
3answers
41 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.
0
votes
0answers
7 views

Human Biology - Undescended balls

I looked through the stack exchange sites and apologize, this seems to be the closest related stack that I could find. I've been doing some reading on undescended balls and common treatments. It ...
0
votes
0answers
6 views

Why do human feces smell much worse than dog feces?

I was not sure whether this is a chemistry or biology question.
3
votes
3answers
30 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.
1
vote
1answer
30 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 ...
4
votes
2answers
47 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
0answers
3 views

How are isopotential maps computed from EEG channel data

I have some EEG recordings of $1$ minutes, with $500$ samples per seconds and $63$ channels. For each recordings, this effectively yields a $30,000\times 63$ matrix $M$. How do I extract isopotential ...
0
votes
0answers
6 views

What is the best current understanding of how yeast transformation works?

I would like to get myself up to speed with what is currently known to science about yeast transformation. Specifically, transformation of plasmids and linear DNA fragments. I am particularly ...
6
votes
4answers
790 views

Why do most mammals have long snouts?

It seems like most mammals, e.g. dogs, have long snouts. My pet dog's snout would seem to me like an evolutionary disadvantage, since her canine teeth are way out at the end of her jaw, which acts as ...
3
votes
0answers
26 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 ...
6
votes
1answer
52 views

Are recessive, deleterious alleles less common on the X chromosome than the autosomes in humans?

As there is a potential for them to be more readily purged in hemizygous males (and in cell lineages in females with the deleterious-allele-bearing chromosome activated), I would expect the frequency ...
7
votes
3answers
16k views

What is the difference between an antibiotic and an antibacterial?

Concerning medicine, what are the differences between antibiotics and antibacterials?
8
votes
1answer
337 views

How does yeast dissolve in sugar?

There's this fascinating "kitchen experiment". Take a "brick" of baker's yeast (not dry yeast), and a couple teaspoons of sugar, put them together in a cup and stir together. There's no doubt both are ...
0
votes
0answers
8 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 ...
5
votes
2answers
4k views

Do other male mammals except for humans have nipples?

When I grew rabbits, I had a pair, one male and one female. And while the female's nipples were quite prominent, especially after giving birth, I don't remember the male having any nipples at all. Do ...
6
votes
1answer
358 views

Do birds have navels?

This picture shows the development inside a bird egg: This shows the connection of the embryo to the yolk sac. Does this mean birds have navels? And if so, what happens to the umbilical cord once ...
0
votes
1answer
41 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
1answer
39 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. ...
10
votes
2answers
25k views

How many human cells are there in our body, on average?

How many human cells are there in our body, on average? Wikipedia says 1013: Bacterial cells are much smaller than human cells, and there are at least ten times as many bacteria as human cells in ...
2
votes
2answers
490 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
17 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 ...
7
votes
1answer
72 views

Dogs bark at familiar person in Santa costume. Why? Don't dogs trust smell over vision?

Last night 10 humans and 2 dogs spent Christmas together. At some point, one human dissappears for a few minutes and comes back wearing a full Santa outfit. Upon respawning, the dogs start barking ...
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 ...
3
votes
2answers
45 views

In practice, do fishes die from old age?

I was watching sea birds eating fishes and wondered if fishes actually died from old age, or if they are all eaten before this can happen? I reckon some big predator fishes must be able to live long ...
5
votes
0answers
43 views

When did CRISPR/Cas9 evolve and what is the likelihood that a superior system for live cell genome editing has already evolved on earth since then?

I've read that CRISPR/Cas9 is currently being implemented and tested for its ability to edit genomes in live cells, and that it is supplanting other genome editing tools in labs, such as TALENs and ...
-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
0answers
13 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
307 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 ...
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 ...
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 ...
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 ...
44
votes
11answers
10k views

Can humans survive without consuming life?

Some people say that it's awful that humans eat animals. They feel that it's barbaric, because you're killing life and then on top of that, you're eating it, and that you should eat vegetation ...
0
votes
0answers
14 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.
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
47 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
18 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 ...
3
votes
2answers
24 views

Is the water transpired by plants pure H₂O, or does it contain trace minerals?

I'm considering the idea of drinking water that I trap from what is transpired by trees. Interestingly, is this water a fairly (or maybe even extraordinarily) pure form of H₂O, a remarkably pure ...
-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.
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
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 ...
6
votes
1answer
49 views

What are the effects of sleep deprivation?

Having recently pulled an "all-nighter" while trying to fix a fatal bug in our release code, I started thinking of any health risks that I might have. What are the adverse effects of staying up for ...
0
votes
1answer
35 views

Global Acidification or Warming [on hold]

Which poses the greater threat to ecology Global Ocean Acidification or Warming?
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
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 ...
4
votes
3answers
132 views

What is the difference between different brain regions

The brain is separated into different regions, and different regions perform different tasks. Well, what are the differences between these regions on the cellular/systemic level. The brain is made up ...
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. ...
7
votes
2answers
42 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 ...
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 ...

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