Qualification > Sciences
Biology Paper 1 and 3 help HERE ONLY!!!
Triple_A:
a) low water potential in vacuole, higher in soil so water moves from soil to vacuole by osmosis through a semi-permeable membrane
b) im not sure
Aodian:
--- Quote from: 247sports on June 07, 2009, 01:32:30 pm ---guys can an1 of u explain me
m/j 2003
question 2b)ii)
Thanks
--- End quote ---
town A is dark coloured one.. count the total percentage of the dark coloured squares.. then look at the X axis to find the number of children with less than 5 teeth decayed.. so its 4 until 1.. then calculate the percentag
total numnber of tooth decayed less than 5 divided by total number of tooth decayed multiplied by 100%
IGSTUDENT:
--- Quote from: Triple_A on June 07, 2009, 01:17:21 pm ---
--- Quote from: IGSTUDENT on June 07, 2009, 01:02:20 pm ---
--- Quote from: Triple_A on June 07, 2009, 12:19:53 pm ---plz someone answer this question
"how can salt help in preventing decay?!!!" ???
--- End quote ---
salt will absorb water from bacteria and without that the bacteria dies
--- End quote ---
Thanks aloooooot
--- End quote ---
Do u need to draw the arc?
IGSTUDENT:
--- Quote from: examsaresoon on June 07, 2009, 01:19:23 pm ---Can some one answer these questions please?
(a) Explain how water passes from the soil into the vacuole of the root hair cell.
(b) A small insect flies towards the eye, causing the person to blink. Describe a possible reflex arc for this reflex action.
describe or draw the arc?
--- End quote ---
247sports:
--- Quote from: Aodian on June 07, 2009, 01:39:14 pm ---
--- Quote from: 247sports on June 07, 2009, 01:32:30 pm ---guys can an1 of u explain me
m/j 2003
question 2b)ii)
Thanks
--- End quote ---
town A is dark coloured one.. count the total percentage of the dark coloured squares.. then look at the X axis to find the number of children with less than 5 teeth decayed.. so its 4 until 1.. then calculate the percentag
total numnber of tooth decayed less than 5 divided by total number of tooth decayed multiplied by 100%
--- End quote ---
awsm dude Thanks
cya tmrw gud luck :)
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