Ch. 3 Part 2 Flashcards
What is a polymer?
Polymers are materials made of long, repeating chains of molecules
How many different amino acids are found in living things?
20
What is a polypeptide?
A long chain consisting of amino acids; two or more amino acids linked together through Carboxyl group and amine group
Regarding diet, what are essential amino acids?
His; Iso; Lea; Lys; Met; Phe; Thr; Trp; Val; Cys
What is a peptide bond
A covalent bond that holds these amino acids together
The amino acid chain that contains _____ hydrophobic characters will be more soluble, the amino acid chain that contains _____ hydrophobic characters will be less soluble
Less, more
What is primary protein structure?
The string of amino acids making the polypeptide
What is secondary protein structure?
The structure containing regions of amino acid chains stabilized by hydrogen bonds from polypeptide backbone
What are two distinctive shapes/motifs defined as secondary structure?
Alpha helix, beta sheet
What is tertiary protein structure
A fully folded protein making a distinguished shape
What chemical bonds and or interactions maintain the three dimensional structure of a folded protein?
Hydrogen bonds, covalent bonds, hydrophobic interactions
What is quaternary protein structure?
Independently made proteins linked together into functional complex
What does it mean to denature a protein?
When protein tertiary is unfolded and modified into its primary or secondary structure
Why does egg white transform from clear to…
Desaturation and the uncoiling/changing of its structure
What are the three categories of lipids
Fats, phospholipids, steroids