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Suppose I have a nerve fiber consisting of several axons all running in parallel to each other. When an action potential is generated in a certain axon, this will alter the concentration of sodium a
Antibodies or immunoglobulins are proteins made by the immune system in response to alien(!) molecules. Each antibody binds to its specific antigen.
I assume other species don't have these. Sure there are instances in the natural world where you can see individuals of the species gather around the dead one. Sometime even the alpha male in the gr
I can accept that we don't quite know exactly how, but has any large-scale/long-term simulation been carried out
But I think the answer should be Hepatic Vein, because the liver produces urea and other waste materials and then it pours it all in the right ventricle of the heart for oxygenation.
Why does having cold hands create a painful sensation?Is it a physical effect, maybe a protection mechanism from evolution?
I heard that the human heart had a surface area of 1000 square feet, and I thought that that cannot be true.
There is a potential difference, but ions cannot go through wires, right?
I know that neurons communicate between each other by filling the junction between dendrites with neurotransmitters.
I'm looking for a simple, inexpensive way to demonstrate that soil is not needed for plant growth to middle school students.
I'm wanting to model interactions in expression level as a dynamic bayesian network, but an assumption my approach will need to make is that it is static.
This increase in blood volume and resulting increase in size in this artery is thought to bring on the pain associated with an ice-cream headache.
This question may seem funny, but I think biology must have good answers. I think no more explanation is needed.
I am trying to find information on Prostaglandin F2-alpha, specifically production in men.
I use DNA green viewer in Lab to see DNA and RNA bands. Some peers told me it is carcinogenic and is not safe.
The humans have been around for a few million years, other organisms longer yet. Changes that occur in the genome and propagate (may) eventually throw a new species ... or at least branch off the ol
I want to compare the brain sizes of two populations of fish. However, all the samples I have were fixed in 95% ethanol. As far as I know, 4% formalin is the normal fixative for soft tissues.
What exactly is going on biologically at the molecular level with acne and causes breakouts?
A well known way to have a rest of mosquitoes during camping is to stand in the fire's smoke. Moreover, I learned recently that shepherds in certain regions of Africa use the same tactic for cattle.
If I would show someone a yellow object and ask them, "is this object yellow?" That person would say "yes".But I could never know if my perception of the color yellow is the same as that other person'
I know that ingesting testosterone and other hormonal drugs may stimulate libido and increase sexual desire.But I wonder, if a man ingests female hormones such as estrogen, will he experience sexual d
Many people can grow extremely long head hair and facial hair.
Describe how cytochromes P450 are mediators of biochemical diversity and discuss their importance in the metabolism and detoxification of xenobiotic compounds.
I could imagine that if this is possible, the selection mechanism might target cyclins, or use an artificial gene cassette controlled by them.So for example, a method may attach some gene to a certa
As I understand it, the main difference between the Bacteria and the Eucaryota domains are that eukaryotes have a nucleus and bacteria don't.