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This nucleotide comes from DNA. This nucleotide comes from DNA.

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False

The following molecule is formed by two amino acids: Identify the alpha carbons using the numbers as shown. The following molecule is formed by two amino acids: Identify the alpha carbons using the numbers as shown. A) 2, 4 B) 1, 6 C) 2, 3 D) 2, 6


A) 2, 4
B) 1, 6
C) 2, 3
D) 2, 6

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What is the series of three bases in a nucleic acid that defines the amino acid to be used in the synthesis of a protein?


A) nucleotide
B) codon
C) tripeptide
D) translation
E) amino acid

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Which of the following will denature proteins?


A) heating
B) strong mixing
C) adding strong acids
D) adding a nonaqueous solvent
E) all of these

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


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

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C

Which amino acid contains a nonpolar side chain?


A) Which amino acid contains a nonpolar side chain? A) B) C) D) E)
B) Which amino acid contains a nonpolar side chain? A) B) C) D) E)
C) Which amino acid contains a nonpolar side chain? A) B) C) D) E)
D) Which amino acid contains a nonpolar side chain? A) B) C) D) E)
E) Which amino acid contains a nonpolar side chain? A) B) C) D) E)

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Which of the following structures is the sugar found in RNA?


A) Which of the following structures is the sugar found in RNA? A) B) C) D) E)
B) Which of the following structures is the sugar found in RNA? A) B) C) D) E)
C) Which of the following structures is the sugar found in RNA? A) B) C) D) E)
D) Which of the following structures is the sugar found in RNA? A) B) C) D) E)
E) Which of the following structures is the sugar found in RNA? A) B) C) D) E)

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Which of the following provides the most branching sites for glucose removal when energy is needed by the body?


A) amylose
B) amylopectin
C) glycogen
D) triglyceride
E) deoxyribonucleic acid

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What is the class of biomolecules that serves as a source of energy, is composed of carbon, hydrogen, and oxygen, and has the general formula Cn(H2O) m?


A) nucleic acids
B) sugars
C) celluloses
D) carbohydrates
E) proteins

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Which amino acid contains a polar side chain?


A) Which amino acid contains a polar side chain? A) B) C) D) E)
B) Which amino acid contains a polar side chain? A) B) C) D) E)
C) Which amino acid contains a polar side chain? A) B) C) D) E)
D) Which amino acid contains a polar side chain? A) B) C) D) E)
E) Which amino acid contains a polar side chain? A) B) C) D) 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

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The cyclic structure arises from the left one of the two linear structures of monosaccharides. The cyclic structure arises from the left one of the two linear structures of monosaccharides.

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

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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

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The following peptide is formed from two amino acids: 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 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

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B

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

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A triglyceride is formed from the following fatty acid.Is this triglyceride a solid fat or a liquid oil? Is it saturated or unsaturated? Does it have a cis or a trans arrangement? A triglyceride is formed from the following fatty acid.Is this triglyceride a solid fat or a liquid oil? Is it saturated or unsaturated? Does it have a cis or a trans arrangement? A) liquid oil, saturated, trans B) liquid oil, saturated, cis C) liquid oil, unsaturated, cis D) solid fat, saturated, cis E) solid fat, unsaturated, trans


A) liquid oil, saturated, trans
B) liquid oil, saturated, cis
C) liquid oil, unsaturated, cis
D) solid fat, saturated, cis
E) solid fat, unsaturated, trans

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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)

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The beginning of a strand of mRNA has the following base sequence: AUGUUCUCUGAUGGCAAUUCU.The polypeptide formed by the first six steps of protein synthesis has the composition Met-Phe-Ser-Asp-Gly-Asn.What is the next amino acid to be added to the polypeptide chain?


A) Asn
B) Asp
C) Met
D) Phe
E) Ser

Correct Answer

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The form of RNA that brings the appropriate amino acid to the site of protein synthesis is mRNA.

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