Chapter 4 quiz

What mutation WOULD cause a significant change in the structure of a protein?

• Phenylalanine to Glycine

• Glutamine to Asparagine

• Valine to Leucine

• Serine to Threonine

What mutation WOULD NOT cause a significant change in protein structure?

• Proline to Serine

• Alanine to Aspartic Acid

• Lysine to Arginine

• Histidine to Cysteine

What does primary structure include?

• 3D arrangement of all the atoms of the molecule including side chains

• multiple polypeptides

• the order of the covalently bonded amino acids

• The hydrogen bonding of the backbones to form a-Helices and B-pleated sheets

What does secondary structure include?

• Multiple polypeptides

• covalently bonded amino acids

• 3D arrangement of all atoms in the molecule including side chains

• Hydrogen bonding of the backbone to the polypeptide chain forming a-Helices and B-pleated sheets

What does tertiary structure include?

• The order of covalently bonded amino acids

• 3D arrangement of all atoms in the molecule including the R groups

• The hydrogen bonding that occurs in the backbones and caused a-helices and B-pleated sheets

• Multiple polypeptides

What does quartenary structure include?

• the amino acid sequence

• the 3D structure of the protein with R groups

• the layout of the backbone and its h-bonding

• multiple polypeptide chains

What kind of protein is collagen?

• Fibrous

• Globular

What kind of proteins are hemoglobin and myoglobin?

• Fibrous

• Globular