Question 1

At a pH of 5,all amino acids have at least ____ charged group(s)and at most,_____ charged group(s).

Accepted Answer

A) 0;1 
B) 1;1 
C) 1;2 
D) 2;2 
E) 2;3 
A) 0;1 
B) 1;1 
C) 1;2 
D) 2;2 
E) 2;3

Question 2

Which of the following is true regarding the $\alpha$-carbon of an amino acid?

Accepted Answer

A) there are always four different functional groups attached 
B) the most commonly occurring form of amino acids are the D-amino acids 
C) when assigning the R-S stereochemistry,the carboxylic acid is always the highest priority functional group 
D) for all amino acids except glycine,the $\alpha$-carbon is a stereocenter 
E) none of the above 
A) there are always four different functional groups attached 
B) the most commonly occurring form of amino acids are the D-amino acids 
C) when assigning the R-S stereochemistry,the carboxylic acid is always the highest priority functional group 
D) for all amino acids except glycine,the $\alpha$-carbon is a stereocenter 
E) none of the above

Question 3

Hydrolysis of a peptide bond produces:

Accepted Answer

A) an alcohol and an amine 
B) an amine and a carboxylic acid 
C) a carboxylic acid and an anhydride 
D) an amide and a carboxylic acid 
E) an alcohol and an amide 
A) an alcohol and an amine 
B) an amine and a carboxylic acid 
C) a carboxylic acid and an anhydride 
D) an amide and a carboxylic acid 
E) an alcohol and an amide

Question 4

Which of the following pairs of amino acids contains both an aliphatic and an aromatic amino acid?

Accepted Answer

A) Thr and Tyr 
B) Val and Gln 
C) Phe and Ile 
D) Ser and Cys 
E) none of the above 
A) Thr and Tyr 
B) Val and Gln 
C) Phe and Ile 
D) Ser and Cys 
E) none of the above

At a pH of 5,all amino acids have at least charged group(s)and at most,_ charged group(s).

Which of the following is true regarding the $\alpha$ -carbon of an amino acid?

Hydrolysis of a peptide bond produces:

Which of the following pairs of amino acids contains both an aliphatic and an aromatic amino acid?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

The Three-Dimensional Structure of Proteins

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 5: Introduction to Proteins: the Primary Level of Protein Structure

At a pH of 5,all amino acids have at least ____ charged group(s)and at most,_____ charged group(s).

Which of the following is true regarding the α\alphaα -carbon of an amino acid?

Hydrolysis of a peptide bond produces:

Which of the following pairs of amino acids contains both an aliphatic and an aromatic amino acid?

The Scope of Biochemistry

The Matrix of Life: Weak Interactions in an Aqueous Environment

The Energetics of Life

Nucleic Acids

The Three-Dimensional Structure of Proteins

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

At a pH of 5,all amino acids have at least charged group(s)and at most,_ charged group(s).

Which of the following is true regarding the $\alpha$ -carbon of an amino acid?