Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

7thgradeBioTest2

terms on diffusion, active and passive transport, and other

QuestionAnswer
microscope An instrument that makes small objects look larger.
selectively permeable A property of cell membranes that allows some substances to pass through, while others cannot.
diffusion The process of which molecules move from an area of higher concentration to an area of lower concentration.
osmosis The diffusion of water molecules through a selectively permeable membrane.
active transport The movement of materials through a cell membrane using cellular energy.
passive transport The movement of materials through a cell membrane without using energy.
organelle A tiny cell structure that carries out a specific function within the cell.
cell membrane A cell structure that controls which substances can enter or leave the cell.
cell The basic unit of structure and function in living things.
cell theory A widely accepted explanation of the relationship between cells and living things.
Most cells can only be seen with a microscope. true
An organism made of many cells is a UNICELLULAR organism. false
Organisms compete with each other for space to live. true
What are three ways that substances can move into and out of a cell? diffusion, active transport, and passive transport
What are two ways that the cell moves things by active transport? transport proteins and transport by engulfing
As a cell gets larger, it takes longer for a molecule that has entered the cell to reach the middle of the cell. true
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards