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

UNIT 4, CHPT 13

CHAPTER 13.2

QuestionAnswer
what is a semi conservative model? DNA replication where the replicated double helix consists of one old strand and one new strand
what is a replication fork? y-shaped region on replicating DNA where parental strands are being unwound and new strands are being synthesized
what are single strand binding proteins? proteins that bind to unpaired DNA strands to keep them from repairing, stabilizing them
what is topisomerase? protein that breaks, swivels, and rejoins DNA strands. helps to relieve strain in double helix ahead of the replication fork
what is a primer? initial nucelotide chain produced during DNA synthesis, RNA. short polynucleotide synthesized by the enzyme primase.
what is a primase? enzyme that joins RNA nucleotides to make a primer during DNA replication, using parental DNA strand as a template
what are DNA polymerases? enzymes that catalyze the synthesis of new DNA by adding nucleotides to the 3' prime end of a preexisting chain. most require a primer and DNA template
what is a leading strand? the new complimentary DNA strand synthesized continuously along the template strand toward the replication fork (in the mandatory 5' to 3' direction)
what is a lagging strand? discontinuously synthesized DNA strand that elongates via okazaki fragments; each synthesized in a 5' to 3' direction away from the replication fork
what are okazaki fragments? segments of the lagging strand
what is DNA ligase? linking enzyme essential for DNA replication; joins pieces of DNA together
what is mismatched repair? cellular process that uses specific enzymes to remove and replace incorrectly paired nucleotides
what is a nuclease? DNA cutting enzyme; cuts DNA or RNA either by removing one/a few bases OR hydrolyzing the DNA/RNA completely into its component nucleotides
what is a nucleotide excision repair? repair system that removes and then correctly replaces a damaged segment of DNA using the undamaged strand as a guide
what are telomeres? repetitive DNA at the end of a chromosome's DNA molecule
Created by: SuperBugLover
 

 



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