Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

11 Cards in this Set

  • Front
  • Back
Cell Transport
The movement of substances across the cell membrane
Active Transport
-Requires ATP
-Goes against concentration gradient
ion pump/bulk transport
Concentration Gradient
Areas of high or low amounts of a substance
Ion pump
-the way substances move in/out of cell
-"revolving door"
Hypertonic Situation
Hyper- too much
water moves out of cell
Passive Transport
-Requires no energy(ATP)
-Goes with the concentration gradient
Isotonic Situation
-Water moves in and out of the cell equally
-Resultsin no change
-Also called "Dynamic Equilibrium"
Hypotonic Situation
Hypo- too little
water moves into the cell
Simple Diffusion
Movement of molecules from a high concentration to a low concentration or with the concentration gradient.
Bulk Transport
Getting large molecules through the cell membrane
Solid: protein and starch
Liquid: oil
A type of diffusion where water moves from a high concentration to a low concentration across a cell