Biology: Are You Ready To Take The DNA Quiz?

20 Questions | Total Attempts: 893

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Biology: Are You Ready To Take The DNA Quiz?

This quiz is to help me study for an exam


Questions and Answers
  • 1. 
    • A. 

      RNA

    • B. 

      MRNA

    • C. 

      DNA

    • D. 

      Proteins

  • 2. 
    DNA is a double helix molecule consisting of two "backbone" chains of what?
    • A. 

      Ribosomes and sugar

    • B. 

      Sugar and nucleotides

    • C. 

      Sugar and phosphate

    • D. 

      Phosphate and hydrogen bonds

  • 3. 
    The chains that are linked by pairs in DNA is what?
    • A. 

      Nucleotide bases

    • B. 

      Hydrogen bases

    • C. 

      Chemical bases

    • D. 

      Acid bases

  • 4. 
    What are sequences of bases in DNA that contain the code for the contruction of protein molecules?
    • A. 

      Geneome

    • B. 

      Traits

    • C. 

      Phenotype

    • D. 

      Genes

  • 5. 
    Only a small fraction of the DNA ub eukaryotes consists of protein-coding genes.
    • A. 

      True

    • B. 

      False

  • 6. 
    A person DNA is carried in? 
    • A. 

      Muscle cells

    • B. 

      Hair

    • C. 

      Saliva

    • D. 

      Skin

    • E. 

      All of the above contain a person's DNA

  • 7. 
    • Which of the following are always the same in every DNA molecule?
    • A. 

      The sugar

    • B. 

      The base

    • C. 

      The phosphate group

    • D. 

      Only a and b are always the same

    • E. 

      Only a and c are always the same

  • 8. 
    • The full set of an individual organism's DNA is called its:
    • A. 

      Complement

    • B. 

      Genome

    • C. 

      Nucleotide

    • D. 

      Chromosomes

    • E. 

      Nucleosome

  • 9. 
    In human, genes make up ____ of the DNA?
    • A. 

      About 75%

    • B. 

      100%

    • C. 

      Less than 5%

    • D. 

      About 50%

  • 10. 
    Genotype is to phenotype as:
    • A. 

      Cookie is to oven

    • B. 

      Cookie is to recipe

    • C. 

      Recipe is to cookie

    • D. 

      Oven is to cookie

  • 11. 
    To start the transciption process a large molecule ___, recognizes a _____.
    • A. 

      DNA polymerase; messenger RNA

    • B. 

      RNA polymerase; promoter site

    • C. 

      RNA polymerase: messenger RNA

    • D. 

      DNA polymerase; promoter site

  • 12. 
    During transcriptionm at the point at which the DNA strand being copied has adenine a(n) ____ is added to the ____. 
    • A. 

      Uracil; mRNA

    • B. 

      Thymine; tRNA

    • C. 

      Uracil; tRNA

    • D. 

      Adenine; mRNA

  • 13. 
    • A. 

      DNA

    • B. 

      Ribosomal subunit

    • C. 

      MRNA

    • D. 

      TRNA

  • 14. 
    Deletions and Substitutions are two types of point mutation. Which type is more likely to cause mistranslations of proteins?
    • A. 

      Substitution because they shift the reading frame and cause downstream amino acids to be changed.

    • B. 

      Deletions, because they shift the reading frame and downstream amino acids to be changed.

    • C. 

      Deletions because one protein is deleted.

    • D. 

      None of the above is correct

  • 15. 
    Which of the following statements about the metabolism of ethanol (which is oresent in alcoholic beverages) is incorrect?
    • A. 

      Individuals who produce non-functioning aldehyde dehydrogenase exhibit "flash-flushing".

    • B. 

      The process requires two enzymes: alcohol dehydrogenase and isopropyl dehydrogenase

    • C. 

      Aspirin interferes with the action of alcohol dehydrogenase

    • D. 

      All of these are correct

  • 16. 
    • A. 

      Makes it possible to create huge numbers of copies of tiny pieces of DNA

    • B. 

      Utilizes RNA messenger RNA molecules from small pieces of DNA

    • C. 

      Can create messenger RNA molecules from small pieces of DNA

    • D. 

      Enables researchers to determine the sequence of a complementary strand of DNA when they have only single-stranded DNA

  • 17. 
    Which of the following is not a difficulty that medicine has encountered in iits attempts to cure human diseases through gene therapy?
    • A. 

      The transfer organism - usually a virus - may get into unintended cells and cause disease

    • B. 

      For many diseases, a malfunctioning gene has not been identified

    • C. 

      For many diseases, a malfunctioning gene has not been identified

    • D. 

      All of the above difficulties encountered in attempts to cure human diseases through gene therapy.

  • 18. 
    Golden rice:
    • A. 

      Could help prevent blindness in the 250,000 children who lose their sight each year because of vitamin A deficiency.

    • B. 

      Is one of the most recent developments in organic farming

    • C. 

      Grows without a husk, thereby reducing the processing required before it can be consumed

    • D. 

      Supplies more vitamin A in one serving than individual needs in a full week

  • 19. 
    Which of the following statements about Bt crytals is correct? 
    • A. 

      The gene coding for the production of Bt crystals has been genetically engineered into the genome of dairy cows

    • B. 

      They are produced by most weedy species of plants

    • C. 

      They are produced by soil-dwelling bacteria of the species Bacillus thuringiensis.

    • D. 

      They are produced by the polymerase chain reaction

  • 20. 
    Highky repetitive sequences of DNA 
    • A. 

      Are used in biotechnology when creating a clone

    • B. 

      Are produced when a mutation occurs in a non-sex cell

    • C. 

      Are produced when a mutation occurs in a sperm-producing or egg-producing cell

    • D. 

      Can be used to produce a DNA fingerprint