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

Cell Biology

QuestionAnswer
Four Major Classes of Biomolecules amino acids -> proteins nucleic acids -> DNA carbohydrates -> complex carbohydrates lipids
What Allows Self-Assembly Without Aid of Temps? *Water *Molecular Properties *molecular prop *hydroph. interactions (nonpolar molecules aggregate to minimize unfavorable interactions with h20 *electrostatic interact. (dipole-dipole) *capacity to form covalent bonds *charged domains (ionic bonds) *interact. with water
Post-Translational Modifications Phosphorylated - serine, threonine, tyrosine Acetylation - lysine Methylation - lysine, arginine *proline and lysine = hydroxylated
Backbone of Polypeptides *dehydration synthesis *peptide bond is rigid and planar *alt. R groups *exposure of R groups to environ.
Sequence of a.a. Determine 3D Structure 1. hydrophob. side chains min. exposure to 2 h20 & go to interior of protein 2. charged/polar side chains are exposed (at surface of protein) to interact with h20 3. polar amide protons and carbonyl O2 form a h bond --> ahelices and bsheets
a-Helices *maximize h bonding *3.6 residues in each turn *ends of helix less stable than center *generates a dipole *P to initiate bends G for tight turns and tight packing
B-Sheets *indiv. strands form H-bonds with neighboring strands in antiparallel *anti=more stable *mostly flat but slight right-handed twist --> B-barrel
Bends * "reverse turns" or "hairpin turn" * omega turns - more loosely packed or irreg. regions * typicall end up at surface of protein * resides at the bend are gen. hydrophillic
Secondary --> Tertiary Structure * coiled -coils : 2 ahelices paired -> dimer * interactions with solvents (H20) * modular domain: indep. folded regions link up to form complex polypeptides
Nucleotides Nucleic Acids (DNA/RNA) 1.One of 4 main bases Adenine (A) Guanine (G) Cytosine (C) Thymine (T) or Uracil (U) 2. 5-Carbon sugar (deoxyribose/ribose) 3. one or more phosphate group
Nucleotides II * linked by phosphodiester bond * add of nucleotide to 3' end of sugar * all bonds are somewhat flexible
Created by: Your
Popular Biology sets

 

 



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