Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
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


Biology Vocabulary

Phosphate An element that is found as part of the structural components of a nucleotide.
Nitrogen Base A nitrogen-containing molecule with basic properties that is found in nucleic acids; adenine, cytosine, guanine, thymine, and uracil.
Gene A segment of DNA nucleotides that code for a specific protein to be produced and leads to the expression of a hereditary trait or characteristic.
Double Helix Two corkscrew-shaped strands that connect to each other by hydrogen bonds; forms the twisted ladder shape of DNA.
Nucleic Acid A biomolecule composed of nucleotides and carries the genetic information of an organism.
Nucleotide The monomer of nucleic acids; composed of phosphate, sugar, and nitrogen bases.
Chromosome A linear strand of DNA that is wrapped around protein structures; carries the gene sequence of an organism.
Adenine A purine base that pairs with thymine.
Cytosine A pyrimidine base that pairs with guanine.
Guanine A purine base that pairs with cytosine.
Thymine A pyrimidine base that pairs with adenine and is found only in DNA.
Uracil A pyrimidine base that pairs with adenine and is found only in RNA.
Histone A protein that DNA coils around to form chromatin.
DNA Replication The process in which the DNA sequence is copied to form an additional DNA molecule.
Created by: carolinekellyy