Search found 208 matches

by Chris4
Thu Apr 14, 2005 1:56 pm
Forum: Botany Discussion
Topic: Why are leaves green?
Replies: 76
Views: 397114

The topic was about digestion but as your new i guess its ok. I found this from here: m Chlorophyll gives plants their green colour. There are other pigments in the leaves too, such as xanthophylls (yellows) and carotenoids (yellows, oranges and reds). These pigments are also used in photosynthesis ...
by Chris4
Fri Apr 08, 2005 8:19 am
Forum: Cell Biology
Topic: About "antiswitch"
Replies: 3
Views: 4287

The protein switches is the only antiswitches i can think about, but could it some sort of amazing university/college. How to apply? :shock: :? Unless he wants to apply a switch to something??
by Chris4
Fri Apr 08, 2005 8:13 am
Forum: General Discussion
Topic: Free Energy of the Universe
Replies: 16
Views: 13760

Most people believe that the universe may end when it collapes back on itself. Its expanding but the energy with which the galaxys are moving away from each other will decrease until they are pulled back together by gravity. I think this will happen before all the energy is lost. Isnt a lot of energ...
by Chris4
Thu Apr 07, 2005 1:16 pm
Forum: General Discussion
Topic: quadrat investigation
Replies: 19
Views: 22489

T-tests... Brings back memories. Comparing two sets of data. Have a look here: m Found a website with a program which does a t-test for you. You just put the two sets of data in. Could use this to check your result. m The example on this website may help m If i had my statistics in biology textbook ...
by Chris4
Tue Apr 05, 2005 4:34 pm
Forum: Human Biology
Topic: The eyes and the brain
Replies: 2
Views: 3504

[quote="ERS"]"When someone meditates they unlearn what they have learned over the years" I am curious as to where you get this idea? I am confused by this also. I dont know much about meditating, but i thought it was relaxation and altering the state of mind. How can it possibly have anyth...
by Chris4
Tue Apr 05, 2005 11:27 am
Forum: General Discussion
Topic: A2 biology coursework
Replies: 18
Views: 42371

Im trying to remember what i did for A2 biology coursework. Im sure our teacher gave us advice on what to do. or maybe even told us what to do. Has yours not? I think in one year (AS or A2) i did yeast fermentation. Variable temp, glucose and all that. That maybe too simple for A2. Whats everyone el...
by Chris4
Mon Apr 04, 2005 4:32 pm
Forum: Microbiology
Topic: Spirilla
Replies: 24
Views: 46468

Microbiology is not my area. But on this site i found that spirilla is the definition of spirillum. Which is a fairly rigid helically twisted bacterial cell often, but not necessarily, a member of the genus Spirillum.
I'll let you know if i find any more info.
by Chris4
Thu Mar 31, 2005 1:26 pm
Forum: General Discussion
Topic: limiting factors of velocity in animals????
Replies: 5
Views: 5716

Velocity meaning speed? Seems a very odd question if it is. :lol:
How big it is. How much of its legs are muscle. Surely this isnt the question???
by Chris4
Wed Mar 23, 2005 2:12 pm
Forum: Human Biology
Topic: Itching
Replies: 12
Views: 20120

A few days after being hurt (cut or something like that) it starts itching. Isn't it? I think this can be a good proof of that itching is a form of pain. I've personally never experienced this. But then i have eczema so I can't say. This doesnt sound like a good biological system because you need t...
by Chris4
Tue Mar 22, 2005 8:46 pm
Forum: Human Biology
Topic: Itching
Replies: 12
Views: 20120

Just did a bit of research: From m "Itch is an uncomfortable sensation caused by irritation of particular nerve endings in the skin. Nerve fibers have special endings that are tiny organs able to receive messages. Some nerve endings receive pressure sensations, some receive temperature, and some rec...
by Chris4
Tue Mar 22, 2005 11:46 am
Forum: Human Biology
Topic: Itching
Replies: 12
Views: 20120

No i dont think it is a form of pain. I should know this. i have eczema. Used to be really bad. itching all the time. its under control now. Its random for everyone else, but i can itch all the time because my immune system is crazy. overactive i think and i have allergies to dust mites (amongst oth...
by Chris4
Fri Mar 18, 2005 3:19 pm
Forum: Evolution
Topic: Lamarckism still here
Replies: 20
Views: 22968

Never heard of this term but i see the principle. But if i was a great on the piano i would be playing it when my kids grow up and therefore they would learn it. You'd have to find the gene for good musical abilities and see if it was passed down. Assuming there is one. skills such as musical abilit...