Question 1

In an $\alpha$-helix,a hydrogen bond is formed between the carbonyl oxygen of the ith residue and the amide hydrogen _____ residues away

Accepted Answer

A) i + 1 
B) i + 2 
C) i + 3 
D) i + 4 
E) i + 5 
A) i + 1 
B) i + 2 
C) i + 3 
D) i + 4 
E) i + 5

Question 2

Which of the following statements regarding structural proteins is true?

Accepted Answer

A) silk fibroin is made from a repeat of three amino acids where each third amino acid is Gly 
B) $\alpha$-keratin is composed of peptides that contain mostly $\alpha$-helical structure with the exception of short sequences where the peptide folds back on itself 
C) collagen has its own helical structure where three individual peptides are wound around each other in a left-handed helix 
D) generally speaking,structural proteins are soluble in water 
E) none of the above 
A) silk fibroin is made from a repeat of three amino acids where each third amino acid is Gly 
B) $\alpha$-keratin is composed of peptides that contain mostly $\alpha$-helical structure with the exception of short sequences where the peptide folds back on itself 
C) collagen has its own helical structure where three individual peptides are wound around each other in a left-handed helix 
D) generally speaking,structural proteins are soluble in water 
E) none of the above

Question 3

Which of the following would contribute to tertiary structure?

Accepted Answer

A) charge-charge interaction between lysine and aspartic acid 
B) disulfide bond 
C) hydrogen bond between serine hydroxyl group and amide of glutamine 
D) hydrophobic interaction between leucine and valine 
E) all of the above 
A) charge-charge interaction between lysine and aspartic acid 
B) disulfide bond 
C) hydrogen bond between serine hydroxyl group and amide of glutamine 
D) hydrophobic interaction between leucine and valine 
E) all of the above

In an $\alpha$ -helix,a hydrogen bond is formed between the carbonyl oxygen of the i^th residue and the amide hydrogen _____ residues away

Which of the following statements regarding structural proteins is true?

Which of the following would contribute to tertiary structure?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Carbohydrates: Sugars,saccharides,glycans

Lipids,membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, gluconeogenesis, glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids,triacylglycerols,and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, steroids, isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, utilization, and Turnover

Metabolism of Nitogenous Compounds Ii: Amino Acids, porphyrins, and Neurotransmitters

Nucleotide Metabolism

Mechanisms of Signal Transduction

Genes,genomes and Chromosomes

Dna Replication

Dna Restructuring: Repair,recombination,rearrangement,amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters

Exam 6: The Three-Dimensional Structure of Proteins

In an α\alphaα -helix,a hydrogen bond is formed between the carbonyl oxygen of the ith residue and the amide hydrogen _____ residues away

Which of the following statements regarding structural proteins is true?

Which of the following would contribute to tertiary structure?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

Introduction to Proteins: the Primary Level of Protein Structure

Protein Function and Evolution

Contractile Proteins and Molecular Motors

Carbohydrates: Sugars,saccharides,glycans

Lipids,membranes and Cellular Transport

Enzymes: Biological Catalysts

Chemical Logic of Metabolism

Carbohydrate Metabolism: Glycolysis, gluconeogenesis, glycogen Metabolism, and the Pentose Phosphate Pathway

Citric Acid Cycle and Glyoxylate Cycle

Electron Transport, oxidative Phosphorylation, and Oxygen Metabolism

Photosynthesis

Lipid Metabolism I: Fatty Acids,triacylglycerols,and Lipoproteins

Interorgan and Intracellular Coordination of Energy Metabolism in Vertebrates

Lipid Metabolism Ii: Membrane Lipids, steroids, isoprenoids, and Eicosanoids

Metabolism of Nitrogenous Compounds I: Principles of Biosynthesis, utilization, and Turnover

Metabolism of Nitogenous Compounds Ii: Amino Acids, porphyrins, and Neurotransmitters

Nucleotide Metabolism

Mechanisms of Signal Transduction

Genes,genomes and Chromosomes

Dna Replication

Dna Restructuring: Repair,recombination,rearrangement,amplification

Information Readout: Transcription and Post-Transcriptional Processing

Information Decoding: Translation and Post-Translational Protein Processing

Regulation of Gene Expression

Filters

In an $\alpha$ -helix,a hydrogen bond is formed between the carbonyl oxygen of the i^th residue and the amide hydrogen _____ residues away