Amino Acids Flashcards
What are amino acids?
Organic compound containing central carbon attached to a hydrogen, carboxyl and amino groups
What does the circle around an amino acid include?
1) amino group
2) carboxy group
3) a carbon
4) side chain
5) hydrogen
What does an atom consist of?
Nucleus and electrons
How is a covalent bond formed between 2 atoms?
Share of electrons
What is bond polarity?
Uneven electron share
A polar bond is described by…
Unequal share of electrons
Name 5 amino acid groups?
- polar/ non polar
- hydrophobic/ hydrophilic
- charged
- acidic/basic
- special
Name 3 non-covalent bonds
- dipole-dipole
- hydrogen bonding
- van der waals
Describe dipole-dipole interactions;
Polar molecules can interact via permanent dipole-dipole interactions
Describe hydrogen bonding(
Polar molecules can interact with permanent dipole-dipole interactions
Amino acids can be hydrogen bond DONORS AND ACCEPTORS
Describe van der walls
Polar and non polar
Even electron share
Temporary dipole
Describe ionic interactions
Opposites strongly attract
What causes an a-helix?
Hydrogen bonding occurring between peptide bonds close together in same region of chain
What causes b-strands
Hydrogen bonding between peptide bonds spatially close together in different region of chain
Secondary structure involves hydrogen bonding between atoms associated with…
Peptide bonds
