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

6 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
The cell membrane is ________, which means that some substances can pass through it while others cannot.
selectively permeable
This word comes from the latin words "to pass through"
Substances that can move into and out of a cell do so by one of the three methods:______,_______, and ________.
diffusion, osmosis, or active transport
_______ is the process by which molecules tend to move from an area of higher concentration to an area of lower concentration.
This is the main method by which substances move into and out of the cell.
The diffusion of water molecules through a selectively permeable membrane is called _____.
_____ is important to cells because cells cannot function properly without adequate water.
The movement of materials through a cell membrane without using energy is called _______.
passive transport
Your body requires energy to do this
______ is the movement of materials through a cell membrane using energy.
Active Transport
This does require energy and you do this while you are moving.