Biology

Hey all, I am in search for some good mouse literature to read up on, such as taking care of lab mice as well as training methodologies or previous successes and so on. Where should I look or does anybody have a zip file of papers I can take a look at? Thanks, - Bryan

hi, can someone help me, i need to know how to calculate the actual size of fragments generated from each of the restriction digest

I am researching what happens when seeds germinate. What I seem to understand so far, is that a seed imbibes water, and this is what triggers of the subsequent stages...but what actually happens? I read that enzymes break down the storage compounds, but what is the significance of this? Also I have found out that copper ions are non-competitive inhibitors of amylase, so the stored starch in a seed cannot be broken down. Why would this affect the germination process?

Homo-sapiens are and have been the dominant (as in population size, ability to control other species, and adaptibility to a large variety of earthly environments) vertebrate species for some time now. What have been the other obvious most dominant vertebrates of the present and past? I’d guess rats and mice presently would have to be up there. Also, I'm interested in what some of the most dominant invertibrates are?

we develope immunity to chikenpox etc just after first brish up but why cant same happens with common cold:cool:

hi there...i was looking through some practice question sheets, when i came across the question: "Name a plant that respires anaerobically throughout it's lifetime" do any of you know any plants that always respire anaerobically? i thought about fungi, but i wasn't sure if it fell under the category of 'plants'...are there other plants that do so, and just out of sheer interest, how does this mechanism work?? thanks...

hi all, im designing an experiment that takes fingernails (cut off from person) and have one set covered in fingernail polish while another set has no polish. Im planning to soak them in different pH solutions and compare to see if polish protects the nails. The only problem is that i dont know how to measure the change (dependent variable) of the fingernails after taken out from the pH. Does anyone know how to measure the change so that the nails can be compared? thx

How much empty space does a cell have or is it more or less a molecular "sphere" for instance?

Does anybody have ever seen bird(s) that fly upside down? I never see any. I think bird's anatomy itself do not let them fly flipped upside down. But maybe I am wrong. Sorry, it is a stupid question. But, I think it is interesting.

(I wasn't quite sure which biology subsection to post this in) Primordial sea/probiotic soup/primeval soup, whichever term you want to use... I have become very interested in evolution recently, although my knowledge, I think is still fairly limited. The whole process, and the history of it excites my imagination on so many levels, and so I thought I would try to apply what we know of our evolution to some kind of prose, beginning with the primordial sea. However, a lot of the description is quite technical and doesn't come close to a descriptive idea of what the whole thing actually looked like. I've been trying my best, taking some poetic liberties, but I…

We already know that almost every human physical or mental traits obeys a bell curve of distribution in the population. That means that humans vary in both, physical and mental attributes. However, I have heard mainly three types of opinions about those differences. The first one is very unrealistic and it is based almost on just wishful-thinking, pure belief and no evidence. It claims that all people are “equal” and that the different levels of intelligence are due to the fact that some people are privileged and get a fine education while others get a poor education. If that was true how they would explain that siblings that belong to the same social class, …

In this interview, molecular biologist Johnjoe McFadden discusses human cognition, synthetic life, and artificial intelligence. An excerpt: "The basic problem is that our subjective experience of consciousness does not correspond to the neurophysiology of our brain. When we see an object, such as a tree, the image that is received by our eyes is processed, in parallel, in millions of widely separated brain neurons. Some neurons process the colour information, some process aspects of movement, some process texture elements of the image. But there is nowhere in the brain where all these disparate elements are brought together. That doesn’t correspond to the subjective e…

Hello everyone, One thing that is of great interest to me is why exactly it is that animals (including humans) age. After all, a species as a whole manages to survive for a large number of generations without significant mutation or chromosomal damage. So why is it that animals after they have been alive for a certain period of time experiance the symptoms associated with senescence? One theory that has been put forward to explain the conundrum of why we age, is known as The Evolutionary Theory of Ageing. This is how it works. The Evolutionary theory of ageing (developed by William Hamilton in association with several other researchers), is the classical theor…

Is it true that cow emit more CO than all the cars in the world?

I'm a photographer, and for an assignment, I want to fake a heroine injection, but obviously I don't want to make anyone inject heroine. I want my subject to actually pierce the skin with the needle, but not inject anything, but if it slips, I don't want him to get sick. what can I put in the needle that won't actually harm him if it is injected? could I possibly get a saline, or something sterile from a doctor/hospital? I want it to look real, so I want the needle to actually pierce the skin, I've gotten many suggestions against it though.

I once saw this Discovery Channel documentary about guillotines. There was a story about 2 scientists who wanted to know how long one can live without a head. One scientist had his head sliced off by a guillotine and the other watched his head. The head-less scientist was supposed to keep on blinking to let the other time how long he was still alive. Supposedly, he was alive for 15 or so seconds. So how do people and animals live without their head for a certain amount of time. I heard that cockroaches can live without their heads for a week.

So im doing a project work in my school. The point of it is to compare the amounts of nicotine produced in Nicotiana Sylvestris plants, depending on different environments, developmental stages and also tissue damage/non tissue damage. A question i have is, when it comes to using a sample of the plant to measure the nicotine, which part do i "nip" without the plant signaling it as tissue damage? It is known that these plants produce more nicotine with bug bites, so i don't want to mimic it when taking samples and it screws up the results. And also, i just started seeding them, and i gonna get lamps. Since i live in Sweden, and it's cold, minus degrees and snow…

How do you calculate an overall 24 hour period metabolism for any organism? I would also like to know how such information could be differentiated to respect units such as the cell for example. Any particular examples for say seeds in a botany emphasis would be great.

I'd like to know, how is the circulatory system of lungless amphibias like. Perhaps anybody knows or could give me an adress of website, where I can find it? Almost all of the amphibians have got three circulations - the big, the small (lungs) and the skin-circulation. Thanks to that, the blood, which flows to all of the tissues, bring the oxygen. The third circulation begins with the small circulation (the lung-artery) and finishes with the big (the main vein). But the lungless amphibians haven't got lungs, so, I think, they haven't also the small circulation (or it is reduced, I don't know). How do they it, I mean, how the blood without oxygen flows to the skin an…

hello my freinds ,this is my first visit and i am really need your help. in neurophysiology we know that we have Na ions and K inos gates,but why the Na ions cannot pass through the K gates although the are smaller in size with respect to these gate?

Please note that this idea was inspired by the third season of Regenesis. I was researching the idea of Spontaneous Human Combustion the other day; now, I know that not many people take the idea seriously. But Regenesis inspired an idea of how it could be possible. What if there was some kind of incredibly rare micro-organism that could rapidly break down water into hydrogen and oxygen. If in somehow infected a person and started breaking down the water in their body, since hydrogen gas is extremely flammable and pure oxygen would increase the hydrogen's combustibility greatly, the slightest spark or open flame would cause the hydrogen to burn; hence, the body combust…

Hi I'm looking for a book (not a studying book) that talks about Biomathematics or the connection between nature/biological phenomenons and mathematics. Thanks

Now we have all heard about spontaneous combustion.....burning of a person's body may occur without an external source of flammable ignition. Now we all are very serious here but on this particular article there on wikipedia.. http://http://en.wikipedia.org/wiki/Spontaneous_human_combustion Under the static flash fire hypothesis where static electricity apparently builds up to such dangerous levels in the human body that a sparking discharge can ignite clothing...Professor Robin Beach met a young woman recently employed; when she stepped on to the metal plate, the meter showed a tremendous jump. She registered 30,000 volts of electrostatic electricity and a resista…

plz tell me how to clone a frog or other cool expriments to do with DNA

Ok, is this the right equation for photosynthesis 6CO2 + 12H2O + Photons --> C6H12O6 + 6O2 + 6H2O Is this right? and is it right that most plants are photoautotrophs which means that they are able to synthesize food directly from inorganic compounds using light energy. Is that right?