Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
How do polymers differ?
|
In the components and arrangement of their monomers.
|
|
|
What happens during a condensation reaction?
|
A water molecule is removed.
|
|
|
What are polypeptides?
|
amino acids in a specific sequence.
|
|
|
What is an optical isomer?
|
different arrangement of 4 DIFFERENT groups around a central carbon.
|
|
|
Out of the 2 types of optical isomers, which one is said to be biologically active?
|
Only L-form.
|
|
|
T/F a polypeptide is flexible?
|
TRUE.
|
|
|
What is the shape of a peptide bond?
|
planar.
|
|
|
What is each amino acid called?
|
residue.
|
|
|
What determines a proteins activity or function?
|
Its shape.
|
|
|
What is the difference between protein conformation and native conformation?
|
Protein conformation is the 3dimensional shape of the protein, native conformation is the functional conformation.
|
|
|
T/F Hbonds are strong and hold structure well.
|
FALSE, Hbonds are weak, but do hold sturcture well.
|
|
|
Where does an Hbond occur on an alpha helix?
|
every 4th peptide bond.
|
|
|
fill in: In beta pleated sheets, Hbonding hold ???
|
neighboring strands together.
|
|
|
what are subunits?
|
2 or more polypeptide chains.
|
|
|
What do molecular chaperones do?
|
assist in protein folding within the cell.
|
|
|
What conditions must be right for proteins to fold correctly?
|
pH, concetration of salt, temperature, chemicals
|
|
|
What is the ONLY process the can denature primary structures?
|
Hydrolysis
|
|
|
What is the term used when proteins lose their native conformation?
|
danaturation
|
|
|
What are the functions of proteins?
|
1) transportation within and outside of cells
2) storage (can be broken down for energy) 3) singnaling (hormones) 4)movement 5) cell recognition |
