-Molecular Genetics-
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| Wave lengths in the electromagnetic spectrum that are mutagenic are absorbed by | DNA.
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| Which of the following DNA base sequences is complementary to this base sequence: ACGGATTAG | TGCCTAATC
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| Which of the following would represent a mutation? | a change in the base sequence of DNA.
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| A change in which of the following would result in a mutation? | all of the above
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| The production of a protein from mRNA is called ______. | translation.
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| Which of the following does NOT occur in DNA replication? The original double helix | degenerate
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| The role of mRNA is to: | carry the genetic instructions to the cytoplasm.
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| Transcription refers to | mRNA synthesis from DNA.
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| Which of the following molecules has an amino acid attached to it? | tRNA
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| Codons may | do all of the above.
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| When a DNA molecule replicates, the resulting DNA molecules are correctly described by which of the following? | Each new DNA molecule contains one old strand and one new strand.
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| How many amino acids are coded for in this mRNA sequence: GGUACCUUUACU | 4
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| Thirty percent of the bases in DNA extracted from a prokaryotic cell is adenine. What percentage of cytosine is present in this DNA? | 20
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| Which of the following is the role of the structural genes in an inducible enzyme system? | to code for proteins that metabolize an inducer substance
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| Substances that cause cells to increase production of an enzyme (or group of enzymes ) are know as | inducers
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| An operon is most closely associated with | transcription
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| ________________ are organic molecules that have the function of starting and regulating chemical reactions. | enzymes
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| Amino acids are the building blocks of: | proteins
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| There are ________ different kinds of amino acids. | 20
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| he largest molecules in our bodies are: | nucleic acids
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| Which of the following statements is true? | DNA molecules are in the shape of a double helix.
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| The human body is composed mostly of: | oxygen, nitrogen, hydrogen, and carbon
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| Which of the following statements is true about DNA? | At the beginning of protein synthesis, a section of a DNA molecule unwinds and unzips.
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| Which of the following occurs at the ribosomes? | Proteins are produced there.
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| Each tRNA anticodon has three bases. The three base combinations are codes for attracting specific kinds of: | amino acids.
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