Biology

Hello all, This year I'm doing a science project on promoting the growth of denitrifying bacteria, but I don't know how to go about doing this or where I can find samples of the bacteria. Any help would be greatly appreciated!

Hi, I am having trouble understanding what factors affect the growth of the apical meristem of plants in general i.e is it sunlight , temperature?

hi all, Wondering if someone could help me understand the methionine to B12 pathway? Ive to pick any B12 metabolic pathway, and that seems to be the one that has the most written about it. After looking at numerous diagrams, reading numerous extracts from journals etc and watching youtube videos, its just not connecting for me. Could someone please explain this metabolic pathway, or alternatively, another important B12 pathway please?

Hey does anyone here know how flies manage to survive during winter to be in a state of abundance by summer? Here in Melbourne, they disappear during winter for many months however then come back during summer. What happens to the flies during winter? Why is it that we cannot see them in winter? Where do they go? Do they hide somewhere? Anyone here know??

Hi guys, found this article on blind people learning echolocation, pretty insane: http://www.echolocationweb.com/blind-people-who-learned-echolocation/ check out those videos also, definetly worth the time

Hypothesis: At first, it's essential to know that the "Respiratory rate" increases, for example when, you practise sport or when you have psychological and nervous tension , and decreases when you rest or sleep.I have found that there is a clear link or relation between hours of sleep and the Respiratory rate, the higher the Respiratory rate increases, the more hours of sleep we have, and the less the Respiratory rate, the less hours of sleep we have. Look at the following table: Age Respiratory rate in one minute The hours of sleep New Baby 40- 50 16 – 20 hours per day …

How much pressure can a human live at without ill effects?

Why female bodybluiders developing enormous clit & labia? According to medical science, there is no method to increase his\her genital parts, so why female bodybuilders are developing enormous clit & labia. so here science is failed.? sorry, i am not insulting female gender in any form, i have doubt so i asking it.

Hi guys, I'm a final year college student about to start my thesis. I was working with a molecular diagnostics company over the summer and they have asked me to write a thesis on different methods of differentiating between two primer sets in a single sample. This is for their molecular diagnostic kit which uses LAMP (loop mediated isothermal technology). If anybody knows of how this could be done, can you please let me know. Any help will be very much appreciated.

Note To Reader: I am just like any other normal person wanting to discover the truth. I am not being selfish and am not trying to bother you or be nonsensical. I just really wish to discuss and find the answer to my theory here. So far, I haven't. People have just been dismissing my theory based upon their own personal opinions. But I need to discuss an actual valid reason as to why they reject my theory besides just from their own personal opinions. There are many philosophies out there on how to live a happy/joyful life. But these are nothing scientific. They know nothing about science and how the brain really works (what our mental experiences really are).…

Electroosmosis is the movement of bulk fluid under the application of a voltage across. This seems to be also essential for electrophoresis, obviously, no emf, no electrophoresis. But I was told that electroosmosis could be a hindrance to movement in electrophoresis. My teacher said that, the factor of electroosmosis only comes in when a charged supporting medium (the substratum) is used, molecules to be separated converged to the medium, their covergence bring with water (to balance the osmotic potential), when the voltage is turned on, all the water blast towards to electrodes leaving those molecule stationary. In this explanation I understand to the point where molecul…

Shouldn't there be a nearly infinite number of, for example, ecoli bacteria? Given mutation rates, wouldnt bacteria separated by something as simple as a river speciate within a thousand years or something? My genetics book keeps using examples from ecoli but I can't help but wonder how they can describe molecular processes so generally across all ecoli. Thanks!

Even single-celled life? Do you think that's possible?

ASSOCIATE SPECIALIST POSITION AVAILABLE IN PLANT GENETICS - UNIVERSITY OF CALIFORNIA, BERKELEY The Freeling lab historically has coded several now-public bioinformatic tools. We now use these tools as our primary research methods: CoGe and qTeller. The latter is powered by iPlant, and the code for both is available at Github. Google these words to find the on-line tools and instructions. Using these and similar tools, we compare homologous (mostly plant, but vertebrates as well) genes and genomes with different evolutionary histories to test specific hypotheses. Example: does an antisense RNA confuse our ability to identify overproducer mutants using RNAseq reads down…

I heated a piece of banana peel in hcl solution and the solution turned red gradually ...any idea what caused the red color to form ?

Q1. How does the respiratory area (total alveolae) compare with the total leaf area of a large, say oak, tree ? Q2. How does my rate of consumption of oxygen compare with the rate of production by the said tree?

Hi all, Does anyone know if nature will rebuild itself after the earth is destoryed? If the earth/nature is conciouious (which it most likely is), as all animals came from plants,etc... So anyway, what is your opinion on what the earth/nature do when the earth gets attacked by the red giant? any ideas?

Without looking at my watch and checking other clues, I am fairly incapable to keep the record of time accurately - I close my eyes, cover my ears and then try to guesstimate when one minute passes... I usually miss a lot, but probably not much more than an average human. I am not sure if this is a skill that can be learned? But, maybe there are animals that are much better at this. Is there any reason why some animal could not have a really good innate timekeeping abilities (without looking at outside clues)? I would be kinda disappointed if evolution found no better solution - is timekeeping a useless trait or is this just a hard problem? Is there any research h…

Hope you all can help me properly understand natural selection. I suspect it is frequently used out of context. It is the method by which the organisms that are most likely to survive and reproduce pass on their traits while those with traits less likely to reproduce are, over time, not passed on. Right? So evolutionary psychology, sociology, ect all say that the desire to successfully pass on genetic traits is the driving force behind behavior. But is this a function of natural selection? That desiring or behavior conducive to passing on genetic offspring is itself formed by natural selection? Because if you don't care about reproducing as your main goal you won't be as…

The idea of not relying on drugs is so interesting. This neuroscientist actually just gave a talk about ways to fix depression/addiction/mental illness without any drugs: http://bit.ly/1D1Y5BE. Brains are really complicated and drugs are very crude but sometimes effective ways to combat mental illness. That's one of the best ways to move forward might instead be exploding your brains on internal mechanism to require itself. Just wondering what everyones thoughts are on this. I definitely recommend watching the talk, its v. interesting

I found this image on wikipedia about the timeframe of the sequence ov events that happen in wound heLing, https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Wound_healing_phases.png/701px-Wound_healing_phases.png It looks like it typically follows a logarithmic/exponential curve (obviously everyone heals at slightly different rates but the sequencing is the same). A lot happens within seconds and minutes and then the amount of progress begins to increasingly slow down with the final phases spanning minths and years . I would like to know if it actually does follow a logarithmic pattern, if itmis actually following a mathematical trajectory, or if it only l…

There is nothing in natural science that accounts for us having a inner world of sounds, pictures and sensations. David Chalmers calls this the 'hard problem of consciousness'. We simply don't know yet how something like consciousness can arise from the electrochemistry of the brain. So perhaps someone here can explain to me how consciousness can arise from chemistry?

how is it possible that in mitosis , after s- phase , the amount of DNA gets double but chromosome number remains the same ?

I was wondering if anyone knows how a wild water melon would naturally disseminate its seeds? According to wikipedia, wild fruits are up to 20 cm, so what would eat those? Google left me without many answers, and no good sources at all... so maybe one of our experts knows better sources (or someone with superior google prowess can supply me an answer). Btw, this is just out of curiosity, as we're eating lots of water melon in summer time.

Hey everyone, I would like to hear everyones opinion on using Netlogo within the field of Biology as a tool for modeling emerging phenomenon? I have read quite a few papers on the benefits, so I am more interested in the possible negatives but would still like to hear whatever might be contributed. Michael