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Enzymes are nucleic acidsthat catalyze specific chemical reactions.

A) True
B) False

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Compare translation and transcription. Which process results in the production of mRNA?


A) Translation
B) Transcription

C) A) and B)
D) undefined

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What is an example of catabolism?


A) Converting hydrogen and hydroxyl ions into water
B) Converting glycogen into glucose molecules
C) Converting amino acids into proteins
D) Converting fatty acids and glycerol into triglyceride molecules

E) B) and C)
F) B) and D)

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The process of translation involves the assembly of an amino acid chain according to the sequence of base triplets in a transfer RNA molecule.

A) True
B) False

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Which statement describes a DNA molecule?


A) A triple helix
B) Chains of nucleotides
C) Single-stranded molecule
D) Made up of RNA
E) Chains of amino acids

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

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What phase of protein synthesis involves the copying of information from DNA into RNA?


A) Translation
B) Transcription
C) Replication
D) Deamination

E) A) and C)
F) A) and B)

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An ATP molecule that has given up its terminal phosphate in order to provide energy for the cell becomes what molecule?


A) AMP
B) Cyclic AMP
C) Glucose
D) ADP
E) Activated ATP

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

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Which molecule contains the most chemical energy?


A) Adenosine triphosphate
B) Adenosine diphosphate

C) A) and B)
D) undefined

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Describe anabolism.


A) The building of larger molecules from smaller ones
B) The total of all chemical processes occurring in cells
C) The processes that decompose structures within cells
D) The breakdown of larger molecules into smaller ones
E) The transport of proteins through the cell membrane

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

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Anticodon sequences are found in transfer RNA molecules.

A) True
B) False

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What is the base sequence of an mRNA molecule produced using a gene with the base sequence T-T-A-C-G-A?


A) A-A-U-G-C-U
B) A-A-T-G-C-T
C) T-T-A-C-G-A
D) U-U-T-G-C-T
E) A-G-C-A-T-T

F) C) and D)
G) None of the above

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A piece of bread held in the mouth begins to taste sweet as large carbohydrate molecules are broken down into smaller sugars. This is an example of what type of chemical reaction?


A) Cellular respiration
B) Dehydration synthesis
C) Catabolism
D) DNA replication
E) Hydrolysis

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

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In what cellular location do the reactions of aerobic respiration occur?


A) In mitochondria
B) In the nucleus
C) In the Golgi apparatus
D) In lysosomes
E) In the cytoplasm

F) None of the above
G) C) and D)

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What are the DNA segments called that encode for proteins?


A) Nitrogenous bases
B) Genomes
C) Amino acids
D) Genes
E) Nucleotides

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

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Codon production depends on what "information"?


A) Base sequence on DNA molecule
B) Base sequence of anticodon
C) Amino acid sequence of ribosome binding site
D) Amino acid sequence of RNA polymerase

E) C) and D)
F) B) and D)

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Of the 32 molecules of ATP generated in one round of the reactions of cellular respiration, only two come from glycolysis.

A) True
B) False

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What compound combines with a 4-carbon oxaloacetic acid molecule to begin the citric acid cycle?


A) ATP
B) Acetyl CoA
C) Pyruvic acid
D) Glucose
E) Carbon dioxide

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

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A codon is a series of three nucleotides within an mRNA molecule that corresponds to a particular amino acid.

A) True
B) False

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Of the human genome, about __________ percent encodes protein.


A) 1.5
B) 10
C) 33.3
D) 50
E) 98

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

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What type of reaction results in the release of a water molecule?


A) Hydrolysis
B) Dehydration synthesis

C) A) and B)
D) undefined

Correct Answer

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