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The following peptide is formed from two amino acids: The following peptide is formed from two amino acids: Which of the following correctly identifies the peptide bond as indicated by the circled bond? A) A B) B C) C D) D E) E Which of the following correctly identifies the peptide bond as indicated by the circled bond? The following peptide is formed from two amino acids: Which of the following correctly identifies the peptide bond as indicated by the circled bond? A) A B) B C) C D) D E) E


A) A
B) B
C) C
D) D
E) E

F) None of the above
G) A) and E)

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Which of the following takes the genetic code from DNA to the ribosomes for protein synthesis?


A) DNA
B) gly
C) mRNA
D) tRNA
E) mDNA

F) All of the above
G) C) and D)

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Which type of protein structure is identified as the arrangement of amino acids in space in a local region in the protein chain, often in the form of a pleated sheet or a helix?

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The type of protein structure that is id...

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The following molecule is formed by two amino acids: The following molecule is formed by two amino acids: Identify the alpha carbons (using the numbers as shown) and the side chains for each amino acid in the molecule. A) 2, 4; CH<sub>3</sub>, CH<sub>2</sub>SH B) 1, 6; CHNH<sub>2</sub>, SH C) 2, 3; CH<sub>3</sub>, CO D) 2, 4; NH<sub>2</sub>, CO<sub>2</sub>H E) 2, 6; CH<sub>3</sub>, SH Identify the alpha carbons (using the numbers as shown) and the side chains for each amino acid in the molecule.


A) 2, 4; CH3, CH2SH
B) 1, 6; CHNH2, SH
C) 2, 3; CH3, CO
D) 2, 4; NH2, CO2H
E) 2, 6; CH3, SH

F) A) and B)
G) A) and E)

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Which of these forms represents how an amino acid exists under physiological conditions?


A) Which of these forms represents how an amino acid exists under physiological conditions? A) B) C) D) E)
B) Which of these forms represents how an amino acid exists under physiological conditions? A) B) C) D) E)
C) Which of these forms represents how an amino acid exists under physiological conditions? A) B) C) D) E)
D) Which of these forms represents how an amino acid exists under physiological conditions? A) B) C) D) E)
E) Which of these forms represents how an amino acid exists under physiological conditions? A) B) C) D) E)

F) B) and D)
G) A) and C)

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The identity of what feature on alpha amino acids distinguishes one amino acid from another?

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The identity of the feature on alpha ami...

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Identify the following structure. Identify the following structure. A) amino acid B) DNA C) lipid D) nucleotide E) glucose


A) amino acid
B) DNA
C) lipid
D) nucleotide
E) glucose

F) None of the above
G) A) and E)

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If the base sequence in a portion of a strand of DNA is TTGGAGTACC, what is the base sequence in the strand of mRNA transcribed from this DNA?


A) TTGGAGTACC
B) AACCTCATGG
C) UUCCTCUTGG
D) AACCTCATUU
E) AACCUCAUGG

F) B) and E)
G) B) and C)

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Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? A) B) C) D) E)


A) Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? A) B) C) D) E)
B) Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? A) B) C) D) E)
C) Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? A) B) C) D) E)
D) Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? A) B) C) D) E)
E) Which amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide? A) B) C) D) E)

F) A) and B)
G) B) and C)

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Which general class of biological molecules can be extracted from cells by nonpolar solvents?

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The general class of biological molecule...

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Which of the following is not a base found in RNA?


A) Which of the following is not a base found in RNA? A) B) C) D) E)
B) Which of the following is not a base found in RNA? A) B) C) D) E)
C) Which of the following is not a base found in RNA? A) B) C) D) E)
D) Which of the following is not a base found in RNA? A) B) C) D) E)
E) Which of the following is not a base found in RNA? A) B) C) D) E)

F) B) and E)
G) B) and C)

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Which type of protein structure describes the order of amino acids in the protein?

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The type of protein structure that descr...

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What types of glucose polymers are present in starch?


A) glycogen and cellulose
B) cellulose and fatty acids
C) amylose and amylopectin
D) adenine and guanine
E) polypeptides and nucleic acids

F) None of the above
G) A) and B)

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What is the process of copying DNA to make new DNA molecules in the cell nucleus during cell division?

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The process of copying DNA to make new D...

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Replication is the process of copying DNA to make new DNA molecules in the cell nucleus during cell division.

A) True
B) False

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Which type of protein structure is characterized by the amino acid sequence in a protein?

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The type of protein structure characteri...

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Identify the type of carbohydrate shown in this model. Identify the type of carbohydrate shown in this model. A) monosaccharide B) disaccharide C) polysaccharide D) pentose E) cellulose


A) monosaccharide
B) disaccharide
C) polysaccharide
D) pentose
E) cellulose

F) A) and E)
G) C) and D)

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A portion of a DNA strand has the following base sequence: GACTAACCTT What is the corresponding base sequence in mRNA transcribed from this DNA?


A) CUGAUUGGAA
B) CTGATTGGAA
C) CTGUTTGGAA
D) CTUATTUUAA
E) GACTAACCTT

F) A) and B)
G) A) and C)

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Which of the following corresponds to the process of using RNA molecules to synthesize protein molecules from amino acids?


A) replication
B) codonation
C) hydrolysis
D) translation
E) transcription

F) A) and E)
G) D) and E)

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Which of the following is present in DNA but not found in RNA?


A) adenine
B) thymine
C) uracil
D) cytosine
E) guanine

F) A) and B)
G) B) and E)

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