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.

Remove Ads
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

Quiz 1 Review (per5

DNA structure and replication

What is DNA made of, and what does its structure look like? nucleotides make up DNA
what does its structure look like? strands connect to nitrogen bases. they connect to the sugar phosphate backbone connecting to the deoxyribose sugars, which connect to the phosphates. hydrogen bonds bind complimentary strands together, forming a double helix
What are the complementary base pairs in DNA? adenine, cytosine, guanine, thymine
When do cells need to make more copies of their DNA? for growth; injury, illness; puberty; meiosis; pregnancy; skin cells
why do cells need to make more copies of their DNA? to survive life, continue growing, healing, etc.
How is DNA replicated? semi-conservatively: the parent and daughter strands combine;
What is the type of strand that DNA is made with? Complementary
What are the sequences of DNA? AT (apple tree) CG (chewing gum)
during which phase of the cell cycle does DNA replicate? Synthesis
Semi-conservative replication definition produces IDENTICAL DNA molecules with both one old strand (parent) and one new strand (daughter) semi=half conserve=save
DNA polymerase enzymes that create DNA molecules by assembling nucleotides,
What makes DNA replication so fast? the DNA origins (the proteins that are needed to be released)
What makes DNA replication accurate? A faithful polymerase makes an accurate copy of DNA.
Do mistakes ever happen when replicating DNA? Mistakes can happen; if they do, mutations occur in DNA and cancer is diagnosed
Created by: sheaf9618