sec 2 sci questions

• yiha093

  4 Oct 07, 22:11

  Ok, just woke up, now studying, have the following sci question
  1) capillaries they allow substances to diffuse through them to?( where?)
  (answered)
  2)Transpiration, what is it, what isit about, what does it do?
  (answered)
  
  3) Visking tube and a beaker of water,( i have glucose in my tube, after a period of time, the glucose diffuse into the water in beaker( does that mean that after a longer period of time, the glucose will go back into the tubing as the concentration is changed to water:high, tubing :low
  or does it juz make it equal?
  
  *list wil be updated as i study =D
• lpx88

  4 Oct 07, 22:13

  Tissue fluid
• wishboy

  4 Oct 07, 22:19

  transpiration is the evaporation of water from the aerial parts of plants
• lpx88

  4 Oct 07, 22:22

  Glucose diffuse until equal.Thats the concept of diffusion.Diffuse until both areas r equal
• missqi

  4 Oct 07, 22:23

  the sugar and water molecules will diffuse until both sides have equal concentrations lah.
  wah you abit
• yiha093

  4 Oct 07, 22:24

  Originally posted by missqi:

  the sugar and water molecules will diffuse until both sides have equal concentrations lah.
  wah you abit

  cher never say how i know, summore, sec 2 nia
  u laugh at me later u wrong i tell you
• wishboy

  4 Oct 07, 23:01

  Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration until the molecules are EVENLY DISTRIBUTED
• yiha093

  4 Oct 07, 23:21

  which 1 conduct electricity
  acid or alkaline?
  or both?
• Darkness_hacker99

  4 Oct 07, 23:23

  Originally posted by yiha093:

  which 1 conduct electricity
  acid or alkaline?
  or both?

  both.
• Darkness_hacker99

  4 Oct 07, 23:26

  Originally posted by missqi:

  the sugar and water molecules will diffuse until both sides have equal concentrations lah.
  wah you abit

  Sugar molecules diffuses
  
  Water molecules enters the visking tubing by Osmosis.
• wishboy

  4 Oct 07, 23:26

  Acid conduct electricity because of the presence of free moving ions like H+ ions
  Alkali conduct electricity because of the presence of free moving ions like OH-
• yiha093

  4 Oct 07, 23:29

  darkie can onlione msn now?
  
• Darkness_hacker99

  4 Oct 07, 23:29

  Originally posted by yiha093:

  darkie can onlione msn now?
  

  Online liao.
• HyuugaNeji

  5 Oct 07, 01:16

  
  
  water is much smaller than glucose. so water will diffuse in and out first. Dont consider glucose so early. Anyway, since this is a semi permeable membrate, most likely one can pass through, one cannot. Water will flow from high to low concentration until both reach equal concentration. once at equal concentration, water will continue to move in and out at the same time but concentration will still be equal.
• Pion

  5 Oct 07, 01:19

  Hmm...does fat diffuse out of obese people? Or what diffuses into them?
• yiha093

  5 Oct 07, 14:51

  thx
  today exam just finished
• tanjun

  5 Oct 07, 20:24

  Originally posted by Pion:

  Hmm...does fat diffuse out of obese people? Or what diffuses into them?

  depends on the size of membrane. Fat is a very big and complex molecule.