Sunday, June 25, 2017

2.16: Understand How Factors Affect the Rate of Movement of Substances Into and Out of Cells, including the Effects of Surface Area to Volume Ratio, Distance, Temperature and Concentration Gradient

FACTORS THAT AFFECT RATE OF MOVEMENT:

FACTOR
EXPLANATION
SURFACE AREA TO VOLUME RATIO
  • As the surface area to volume ratio (SA:V) increases, the rate of movement of substances into and out of cells will increase
  • This is because there is a larger surface area in which substances can move through, hence increasing the rate of movement of substance

TEMPERATURE
  • As temperature increases, the rate of movement of substances into and out of cells will increase
  • This is because particles gain more kinetic energy and so will move faster, hence increasing the rate of movement of substance

CONCENTRATION GRADIENT
  • As concentration gradient increases, the rate of movement of substances into and out of cells will increase
  • This is because a stronger concentration gradient is present, hence increasing the rate of movement of substance

at
Labels: ,

5 comments:

  1. UnknownJanuary 19, 2019 at 10:25 AM

    You've missed out distance here - just so you know :)

    ReplyDelete
  2. UnknownApril 8, 2019 at 8:44 AM

    As to samanthas point - distance will affect the rate of movement as the shorter the distance the shorter the path needed to take the longer the distance the longer the path needed to take

    ReplyDelete
  3. Unknown UserApril 18, 2021 at 11:48 AM

    thats completely wrong because the whole point is that its the rate of movement not the time taken to move. Of course if u change the distance the time taken to move across the distance will change but it will change directly proportional with the distance so the rate of movement is constant if u change the distance.

    ReplyDelete

Subscribe to: Post Comments (Atom)