Search found 61 matches

by cool A-level student
Thu Feb 23, 2006 11:35 am
Forum: Cell Biology
Topic: Hypertonic/Hypotonic
Replies: 2
Views: 3887

hypotonic solutions are ones with higher water concentrations, and so when in contact with a cell that has a lesser water conc. then osmosis will occur and water will transfer to the cell and thus how a blood cel explodes from too much or green leaves get plump again as they have water to support th...
by cool A-level student
Thu Feb 23, 2006 11:23 am
Forum: Physiology
Topic: plants produce toxic
Replies: 5
Views: 5977

many dangerous substances like enzymes are stored in the lysosomes, very useful organnelles that consume trash and foreign objects with the enzmes they carry
thats all i can think of hope it helps
by cool A-level student
Thu Feb 23, 2006 11:21 am
Forum: General Discussion
Topic: how does soap remove microorganism
Replies: 33
Views: 23471

Soap is a surfactant agent, means that it has two different is polar edge which can bind with water and another one is non-polar edge which can bind with fat tails.... How soap remove microorganisms from our body? well, microorganisms have lipid envelope that surrounds their
by cool A-level student
Thu Feb 23, 2006 11:17 am
Forum: Botany Discussion
Topic: Why does bananas smell so bad?
Replies: 8
Views: 7356

mmm, wateva it is ive neva found a banana that smells as bad as u say
by cool A-level student
Mon Jan 16, 2006 12:33 pm
Forum: Human Biology
Topic: Artificial Bone Could be Created
Replies: 6
Views: 2930

stem cells all the way!
you can grow yourself anythin wid them :)
i just hope they hurry cos my grandad has parkinsons disease and stems cells could reverse all teh damage :)
by cool A-level student
Mon Jan 16, 2006 12:28 pm
Forum: Microbiology
Topic: micro
Replies: 10
Views: 5541

exactly why does life exist?
cos well it does really, its a hard question to answer sein as how viruses first evolved a very long time ago (talkin millions ro billions or years here)
there are certain guesses but im not the one to ask for em
by cool A-level student
Mon Jan 16, 2006 12:16 pm
Forum: Evolution
Topic: Evolutionary Importance
Replies: 14
Views: 7623

mass extinction eh?
i agree we truly screwin this planet up here!
global warming is a real prob!
mayb we shud go to global cooling :) mind you fighting pollution with another kind of pollution sounds abit funny
by cool A-level student
Mon Jan 16, 2006 12:14 pm
Forum: Evolution
Topic: Objections to Darwin
Replies: 30
Views: 21616

Darwin was a gr8 man :)
good theories that are still unable to be challenged mind you he had some smaller issues wrong but so would you in those times! with a lack of equipment and general know how
how on earth did Darwin get so smart in a time so badly opinionated and underdeveloped?!?
by cool A-level student
Mon Jan 16, 2006 12:12 pm
Forum: Evolution
Topic: LIFE
Replies: 19
Views: 11268

apparently all humans originally evolved in africa too, intrestin huh? cos thats were our closest buddies are only 2.4% genetic difference between us and chimps!!! and yes we all evolved from a kind of prokaryotic cell in which had a single strand of circlular DNA we've come along way since then now...
by cool A-level student
Mon Jan 16, 2006 12:05 pm
Forum: Evolution
Topic: Who did we evolve from?
Replies: 157
Views: 113079

theres only a 2.4% difference in DNA between us and chimpanzee's and i can garuntee you that all our DNA sequence are about 99.9% combatible, and yet we look soo different! in a manner we are still monkey in shape cos we are supposed to be hunched on the ground and and moving on our hands and feet, ...
by cool A-level student
Mon Jan 16, 2006 11:57 am
Forum: Genetics
Topic: Question on mutation
Replies: 10
Views: 7275

well eat healthy is my advice mate if weak lungs are in your genetics then its a problem for you to overcome via training yourself to breath deeper and better, when your eatin right and have more energy id also say you could use some exercise to get some muscle on those bones! i personally like to g...
by cool A-level student
Mon Jan 16, 2006 11:45 am
Forum: Cell Biology
Topic: Exchange of Gases, Nutrients and Waste
Replies: 3
Views: 4410


there are many kinds of transport diffusion ya know so i wont talk bout dat osmosis however is the movement of water from a high concentration to a low concentration (bear in mind all the water molecules are moving to and fro just more into the low concentration) facilitated diffision is diffusion t...