http://library.med.utah.edu/kw/hyperbrain/anim/reflex.html
http://www.brainviews.com/abFiles/AniPatellar.htm
Thursday, February 28, 2008
Sunday, February 24, 2008
would you believe that we have clones amongst us ?
Yes! Twins infact share the same genetic materials hence are clones. Developed from same set of chromosomes that split after fertilization of the ovum. They also share most physical attributes. Can you trace the genetic transfer?
The picture to your right show twin girls..but this happens probably one in a million. Epigenetic modification? this is something else. Read same difference http://www.sciencenews.org/articles/20050709/fob1.asp
How do they clone cells or organisms. http://www.dnalc.org/cloning.html
So why clone? For medical purposes; cloning animal models for disease, cloning stem cells for research and pharmimg for drug production. and Cloning extinct animals ala Jurassic park? Theoritically yes for so long as the genetic material is preserved well. Some recently extinct species were cloned!
How about human cloning? There are ethical, legal and social issues to consider.
coal fired power plant- mechanics
so much talk about coal fired power plant but as Fr Celiz has mentioned most people would just like to take a 'hitch ride' without a basic knowledge of what the issue is all about..
http://www.eas.asu.edu/~holbert/eee463/coal.html
how effective is an electrostatic precipitator? take a look at this from website of Iowa Department of Natural resources
http://www.iowadnr.com/air/citizen/educate/e_static.html
http://www.eas.asu.edu/~holbert/eee463/coal.html
how effective is an electrostatic precipitator? take a look at this from website of Iowa Department of Natural resources
http://www.iowadnr.com/air/citizen/educate/e_static.html
Friday, February 22, 2008
Thursday, February 14, 2008
enteric endocrine system
see coordination of secretion of hormones from the stomach and duodenum..this is all regulated by feedback system
http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/basics/gi_endocrine.html
http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/basics/gi_endocrine.html
Tuesday, February 12, 2008
swallowing mechanism
well coordination of pharyngeal structures during swallowing
§http://www.linkstudio.info/images/portfolio/medani/Swallow.swf
§http://www.linkstudio.info/images/portfolio/medani/Swallow.swf
Saturday, February 9, 2008
Thursday, February 7, 2008
human beings to live for 120 years??!!
Before it is calorie restriction. Some animal studies conducted over the past 20 years have shown up to a 40% increase in maximum life span. CR also provides numerous secondary health benefits, such as a greatly lowered risk for most degenerative conditions of aging.
Since the discovery of the longevity genes- SIR genes or the 'silent information regulator' gene a decade ago, its only now that David Sinclair of Harvard School of Medicine has found a way to activate these genes resulting in production of an enzyme deacetylase.
http://www.supercentenarian.com/archive/longevity-genes.html
Deacetylase would remove acetyl group from histones in the chromosome resulting in ”choking off” of the chromosome making it 'silent '. It is in this state that life span is increased.
How can SIR genes be activated ? Resveratrol , a molecule that can be found in grapes, blue berries and other plants is the key. Must we then be drinking red wine? Sinclaire admits we may start drinking 'few bottles' a day but we will not have the desired effect!
Sinclair is now trying to develop a drug that would do the job. Other than that, no caloric restriction is necessary. NO DIETING NEEDED!! Coming in the next 5 years?
http://www.lewrockwell.com/sardi/sardi25.html
Since the discovery of the longevity genes- SIR genes or the 'silent information regulator' gene a decade ago, its only now that David Sinclair of Harvard School of Medicine has found a way to activate these genes resulting in production of an enzyme deacetylase.
http://www.supercentenarian.com/archive/longevity-genes.html
Deacetylase would remove acetyl group from histones in the chromosome resulting in ”choking off” of the chromosome making it 'silent '. It is in this state that life span is increased.
How can SIR genes be activated ? Resveratrol , a molecule that can be found in grapes, blue berries and other plants is the key. Must we then be drinking red wine? Sinclaire admits we may start drinking 'few bottles' a day but we will not have the desired effect!
Sinclair is now trying to develop a drug that would do the job. Other than that, no caloric restriction is necessary. NO DIETING NEEDED!! Coming in the next 5 years?
http://www.lewrockwell.com/sardi/sardi25.html
see this beautiful muscular contraction
watch and be able to explain m. contraction
http://www.sci.sdsu.edu/movies/actin_myosin_gif.html
play and learn
http://www.brookscole.com/chemistry_d/templates/student_resources/shared_resources/animations/muscles/muscles.html
http://www.sci.sdsu.edu/movies/actin_myosin_gif.html
play and learn
http://www.brookscole.com/chemistry_d/templates/student_resources/shared_resources/animations/muscles/muscles.html
Tuesday, February 5, 2008
just what is phosphorylation
by PHOSPHORYLATION... adding a phosphate to ADP ADP + P ------> ATP
a) substrate level phosphorylation... where a substrate molecule ( X-p )
donates its P to ADP making ATP
b) chemiosmosis –
[Oxidative Phosphorylation of Krebs cycle & ETC]... food substrates donate e- &
protons to acceptor molecules [NADH], i.e., oxidation.
NADH gives up electrons & protons
are pumped out of mitochondria (or the chloroplasts in photosynthesis);
protons diffuse back into mito thru an enzyme - ATPase, the ATPase enzyme makes ADP + P --> ATP
http://student.ccbcmd.edu/biotutorials/energy/chemios.html
a) substrate level phosphorylation... where a substrate molecule ( X-p )
donates its P to ADP making ATP
b) chemiosmosis –
[Oxidative Phosphorylation of Krebs cycle & ETC]... food substrates donate e- &
protons to acceptor molecules [NADH], i.e., oxidation.
NADH gives up electrons & protons
are pumped out of mitochondria (or the chloroplasts in photosynthesis);
protons diffuse back into mito thru an enzyme - ATPase, the ATPase enzyme makes ADP + P --> ATP
http://student.ccbcmd.edu/biotutorials/energy/chemios.html
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