Biology

I've been told before that dogs see in black and white, however in light of recent evidence, I believe that some dogs see color (atleast in partial color). My reason behind this is the other night, I was teasing the cat with a lazer pointer. My dog (who is lab/golden retreiver) had seen the lazer pointer and took chase with the cat. Now, as you can imagine, this was very comical, but thats beside the point. The lazer pointer is red and not that much different in brightness from the carpet to the wall, however the dog chased it the entire time. I tried this on two other dogs and the others either ignored it or could not see it. So, I came to the conclusion that…

I was recently discussing whether meat (bought in supermarket or at a butcher) has any bacteria inside of it. The whole idea started with the fact that some people prefer medium rare or bloody steaks and the argument that it was edible and not a threat to your health is that all possible bacteria are on the outside of the meat and not the inside. I tried reasoning with these people that through most of the meat we eat, blood runs through the animal when stil alive, thus there always being bacteria inside meat since blood always contains a certain amount of bacteria. Can anyone allaborate whether this is in fact true or was I the only mental patient at lunch that d…

how is it possible to have green (what I assume is) Blood? I was examining my roses the other day and it`s infested with the usual Greenfly, I squashed some of them and took a close look, they`re not just green on the otside , but thier "Blood" is too. it doesn`t smell of anything in particular either, like a plant smell or anything (I didn`t taste any). so I`m wondering, how can green blood be possible and what is it that makes it green?

I was wondering if the cell cycle occurs constantly and only speeds up or slows down or can it come to a complete hault? My science teacher claims it can come to a complete halt when cells such as skin cells come in contact with other cells because of external regulators. thanks

I require immediate assistance with one topic pestering me for a while. How do you determine how much force a human can exert through punches, running, tackling, kicking jumping, or swimming? How does this force affect both organic and inorganic object? Does this force spread or does it stay concentrated within a small area? How do you determine how damaging this force can be? Any and all information would be helpful. Thanks to all in advance for providing any knowledge to help me.

How are the following parts of the cell related? Flagella and centrioles ? Lysosomes and vacuoles?

I'm currently doing an investigation to see if woodlice pheremones have an effect on which way the woodlouse turns in a maze. I want to talk about the role of pheremones and the nervous system but I am unable to find any information anywhere. Do any of you know or have any links on how pheremones and chemical memory works with regard to the nervous system? Would be much appreciated.

I noticed on the news that drivers in France are being made to disinfect thier tires by driving through hay that had been soaked in caustic soda. I looked up caustic soda on Wikipedia and it does not mention disinfectant as one of it's uses. Does caustic soda often get used as a disinfectant? How does caustic soda neutralise viruses?

I've seen this 4 times this month, around 7AM, others in my hometown claim to see it more often. It seems to happen on colder than average mornings. I live in Eureka CA., 100 miles south of Oregon, on the Pacific Ocean. Is this happening elsewhere, anyone? Huge flocks, bigger than I'd ever seeing the 7 years I've lived here. One person here says sometimes they will head south several hours later. What is this global warming? a shift in the magnetic field? HAARP? any explanations?

hi, I heard that it's bad if you exersise and then right after you drink water. Is it bad? This happened when i was running on the track. I stopped in the middle to get a drink of water. One of my buddies said that it's bad to do so. He said that you should cool down before you drink water. is this true? why shouldn't we drink water right after running?

I have a question...I am doing a research paper and I was curious if hemoglobin is the key to a healthy heart beat?

This is partly biology based, but it is mostly a financial thing. i have been thinking it for a while and would just like to see what people think. It appears to me, that money is halting our own evolution and development. The humanrace, has the knowledge, or the ability to obtain the knowledge, to further our species. We also have many of the raw materials available. the only thing we lack in order to conduct reasearch into new technologies is money. Can you imagine what we would be able to do if there was an endless supply of funding for scientifi reasearch an development. It seems a bit ironic that money is a man has made, and yet it is holding us back from our ful…

I was wondering if anyone knew of any plants that could survive in a near vacuum environment? Im not what sure plants to even start, but if anyone could point me in the right direction to find such plants.

I found some live web cams from the Monterey Bay Aquarium. They are fun to watch, and they are full of life. My favorite cam is the Outer Bay Cam. I saw a sea turtle in it (I love sea turtles)! http://www.mbayaq.org/efc/cam_menu.asp

If there are no muscles in the brain, and brain cells act on impulses they receive from other cells, how are we able to control our thoughts?

I hope I'm asking this question in the right forum. If not, please redirect me. Anyway, my question is: when we smell aromatic cedar, what is the size range in microns of the particle(s) that are actually physiologically interacting with our systems? .... Don't ask why I need to know. Thanks for your help!!

This makes me so angry. Habitat destruction is enough, but now global warming's killing frogs?!? That's just WRONG!!! http://www.livescience.com/animalworld/060112_frog_warming.html Then we really need to work hard to save the other 2/3 of the amphibians, and we need to do it fast.

I was reading about symbiosis and I wondered about parasitism. Couldn't this also be a form of predation? A parasite acts the predator in a way because sometimes it ends in the death of the host, or, possibly in this case, prey. So, under what circumstances can parasitism be considered predation and what are some good examples to back this?

Ive noticed that sometimes (frequency varies with people), when you sneeze there is a strange smell. Really the only smell that i can think of that it smells like is beer fining gel, but as most of you probably dont know what it smells like, its a sort of cross between mustyness and honey. Any 'body noticed/idea why it is the case?

I found this picture of a pink dolphin. Amazing, I wonder why they're pink. Here is the article.

what time of year do you reckon squirrels are most active/ spend most time outside?

Yeah, crazy... http://www.cnn.com/2006/WORLD/asiapcf/01/19/japan.jellyfish.reut/index.html

The new concepts on the origination of the first simple microscopic single celled organisms on earth (The spark of life). In summary the first single celled organisms may have been formed from a series of extremely complex reactions or combination processes, involving different substances. Most of the combination processes or the combining of the substances can only take place in the presence of large amounts of energy and at extremely high pressures and along with high pressure comes high temperature. How life was first formed on earth: The best environments needed for the creation of life. These environments would have to provide the right ingredients, combi…

I'm curious - on average, how long after someone's brain has become electrically silent does it take for irreversible damage to occur? Or, how long after someone died would it take for revival (with an intact brain) to become fundamentally impossible? In the case that actual revival may become unfeasible before the brain has significantly decayed, assume the ability to revive someone is not in question - how long would it take for chemically stored information in the brain and the cell structure of the brain to deteriorate beyond any hope of retrieval?

Now, alittle while back (on another forum site, far, far away...) I started thinking about the potential for biomechanical suits as enhancements for their wearers in many applications (eg, combat). However, the control mechanisms and general potential of this is best left for another discussion. What I am here to discuss is the method to be used for transferring energy to the suit's systems; With my limited knowledge of biological functions, I am aware that lone pairs of electrons are used by plants to make ATP (photosynthesis). I propose that a constant electrical current from a hydrogen (or methane) fuel cell be used to create a constant and plentiful su…