Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

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

8thGrade lifeScience

Life Science

Which is NOT a main idea of the cell theory? The cell is the smallest unit of life
Which is NOT one of the 6 main kinds of atoms that make up the molecules of living things? Lead
What substance makes up most of your body's mass? Water
Sugar, Starch, Cellulose, and chitin are all types of? Proteins
What is a difference between the cell membrane and the cell wall? The cell membrane is selectively permeable, but the cell wall allows substances to pass threw freely
The slope of a line on a speed-time graph is equal to the________of an object? Acceleration
Which does bot define a reference direction relative to a reference point? +5 cm