Qualification > Sciences
Biology Paper 1 and 3 help HERE ONLY!!!
Aodian:
--- Quote from: cool_dude on June 07, 2009, 09:40:44 am ---
--- Quote from: Aodian on June 07, 2009, 09:39:28 am ---
--- Quote from: cool_dude on June 07, 2009, 09:37:05 am ---does anyone know why the answer for nov02,ppr3, 2 a)i was motor neurone????
--- End quote ---
yes its a motor neuron..
--- End quote ---
but motor neurone has body cell around it..?
what about sensory neurone?
--- End quote ---
its a motor neuron because the cell body is at the tip, it has many dendrites on the cell body.. and only the axon is myelinated...
whereas ffor sensory neuron.. both the dendrite and the axon are myelinated, the body cell is attaced to one fibre.. its sumwhere in the middle.. but never at the tip or end..
check out their pictures on google that'll make it easier to understand
cool_dude:
--- Quote from: cool_dude on June 07, 2009, 09:40:44 am ---
--- Quote from: Aodian on June 07, 2009, 09:39:28 am ---
--- Quote from: cool_dude on June 07, 2009, 09:37:05 am ---does anyone know why the answer for nov02,ppr3, 2 a)i was motor neurone????
--- End quote ---
yes its a motor neuron..
--- End quote ---
but motor neurone has body cell around it..?
what about sensory neurone?
--- End quote ---
arghh..why my revision book says thats sensory neuron.??..
k thanks..
Aodian:
--- Quote from: unknown on June 07, 2009, 09:38:28 am ---
--- Quote from: Aodian on June 07, 2009, 09:22:54 am ---
--- Quote from: unknown on June 07, 2009, 09:16:48 am ---hey guys thx fr d help gt 1 more q fr u all
suggest y we r aware of the blind spot when both eyes r open
--- End quote ---
cud u rephrase ur question i didnt reli get that..
--- End quote ---
srry d q is why we r nt aware of d blind spot when bth eyes r open
n ya 247 sports yr ans does make sum sense bcz i dnt knw nething abt this
--- End quote ---
sporty's right.. we're not aware of the blindspot at all because there are absolutely zero receptors that are sensitive to light on that area.. so if any light shines and falls on our blindspot we wont be able to see it..
tat's why sumtimes when ur at the store and u have a friend or maybe ur mum with u standing just behind u to ur left or right slightly.. and u look back and talk to them for a sec and then look front.. u still think that they're there.. when infact they went off to get some icecream and you end up talking with ur face facing the front to air cause they're not there.. erm.. i dunno how i can make this explaination work.. but i hope u get wat im trying to say..
Smokethetree:
Wat do they mean when they say
- describe the importance of gaseous and solute diffusion, and of water as a solvent
appreciate ur help
Ibiza279:
--- Quote from: Aodian on June 07, 2009, 09:50:17 am ---
--- Quote from: unknown on June 07, 2009, 09:38:28 am ---
--- Quote from: Aodian on June 07, 2009, 09:22:54 am ---
--- Quote from: unknown on June 07, 2009, 09:16:48 am ---hey guys thx fr d help gt 1 more q fr u all
suggest y we r aware of the blind spot when both eyes r open
--- End quote ---
cud u rephrase ur question i didnt reli get that..
--- End quote ---
srry d q is why we r nt aware of d blind spot when bth eyes r open
n ya 247 sports yr ans does make sum sense bcz i dnt knw nething abt this
--- End quote ---
sporty's right.. we're not aware of the blindspot at all because there are absolutely zero receptors that are sensitive to light on that area.. so if any light shines and falls on our blindspot we wont be able to see it..
tat's why sumtimes when ur at the store and u have a friend or maybe ur mum with u standing just behind u to ur left or right slightly.. and u look back and talk to them for a sec and then look front.. u still think that they're there.. when infact they went off to get some icecream and you end up talking with ur face facing the front to air cause they're not there.. erm.. i dunno how i can make this explaination work.. but i hope u get wat im trying to say..
--- End quote ---
this is what i learnt fer the proper explaination fer us not being aware of our blind spot.
when we look at a blank wall, on that wall there is a real tiny black spot for our eye.that spot can't be formed as an image in our brain because it falls on the blind spot but our brain interprets that spot n fills it up so we see it as a whole image n not an image with a dot. the spot is there, we re jus "fooled" by the brain in to imaging as its not there
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version