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

biology lecture 12

regulating the cell cycle

QuestionAnswer
when should a cell divide during injury
where should a cell divide in the tissue it came from
whcih type of cells should divide only healthy cells should divide
how do receptors ensure proper cell division they help with density dependent inhibition of growth
how do anchoring proteins ensure proper cell division hold cells in place within their tissues and prevent cells from entering other tissues if they dislodge ( cell adhesion)
how do regulatory proteins ensure proper cell division establish/run checkpoints
density dependent inhibition of growth cells will only divide if space permits it
cell adhesion cell is anchored to tissue, if anchoring is lost cell is told to commit apoptosis,killed, or fixed
G1 checkpoint most important checkpoint, ensures that there is no dna damage
G2 checkpoint has all DNA been properly replicated
M checkpoint are all chromosomes properly aligned, are all kinetochores attached to spindle fibers
p53 protein regulatory protein, runs checkpoints, tumor supressor, initiate DNA repair or apoptosis
what is cancer unregulated cell growth due to changes in DNA which allows it to ignore regulatory mechanisms
cell senescence once cells reach a certain point, they can no longer divide ( to prevent cells with accumulated damages)
4 things that happen in a cancerous cell . apoptosis signals are ignored .cell senescence is ignored (immortal) .checkpoints are ignored .increased sensitivity to growth signals
4 causes of dna damage .spontaneous ( erros in dna replication) .chemical ( asbestos, tobacco) .physical ( radiation) .infectious causes (bacteria, fungi, virus)
benign tumors cells multiply in 1 place ( no metastisizing) dont harm host tissue ( dont even move to other areas of host tissue) usually 1st dna mutation
malignant tumors metastasizing harm/invade host tissue angiogenesis ( may induce growth of BV to feed tumor) true cancer
Created by: Julia V
 

 



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