Molecular Genetics Unit Post-assessment (grade 7)

12 Preguntes

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Molecular Genetics Unit Post-assessment (grade 7)

Molecular Genetics Unit Post-Assessment (Grade 7)


Questions and Answers
  • 1. 
    In the diagram below, which letter indicates a section of the molecule that includes all the components of a nucleotide (Standard 2.1 f)?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      None of the above

  • 2. 
    The presence of DNA is important for cellular metabolic activities because DNA (Standard 2.1g)
    • A. 

      Directs the production of enzymes

    • B. 

      Is a structural component of cell walls

    • C. 

      Directly increases the solubility of nutrients

    • D. 

      Is the major component of cytoplasm

    • E. 

      Is a direct source of energy

  • 3. 
    Protein has a great potential for variation of structure because (Standard 2.1i)
    • A. 

      Monosaccharides have many different structures

    • B. 

      Many amino acids may combine in a number of ways

    • C. 

      Different amino acids occur in pairs

    • D. 

      Fatty acids may vary

    • E. 

      Number of chromosomes vary from cell to cell

  • 4. 
    Mutations can be transmitted to the next generation only if they are present in (Standard 2.1h):
    • A. 

      Brain cells

    • B. 

      Body cells

    • C. 

      Sex cells

    • D. 

      Muscle cells

    • E. 

      T cells

  • 5. 
    The structure and location of a cellular component is represented in the diagram shown. The polymer in the diagram most likely contains (Standard 2.1j):
    • A. 

      Adenosine triphosphate

    • B. 

      Genes

    • C. 

      Lipids

    • D. 

      Hydrolytic enzymes

    • E. 

      Organelles

  • 6. 
    Which statement is true (Standard 2.1k)?
    • A. 

      Every cell in the body is genetically different from each other

    • B. 

      Stem cells contain genes that are different from differentiated cells

    • C. 

      Monozygotic twins have different genotypes

    • D. 

      Muscle cells and nerve cells contain different genes

    • E. 

      Muscle cells and nerve cells contain the same genes

  • 7. 
    Sometimes a section of a chromosome is lost during meiosis. This loss results in a change in genetic material known as (Standard 2.2d):
    • A. 

      Deletion

    • B. 

      Replication

    • C. 

      Crossing over

    • D. 

      Polyploidy

    • E. 

      Point mutation

  • 8. 
    Which statement below is true about gel electrophoresis?
    • A. 

      Negatively charged DNA are placed in the sample wells

    • B. 

      The smallest DNA fragments are closest to the positive side of the gel

    • C. 

      The largest DNA fragments are closest to the negative side of the gel

    • D. 

      Restriction enzymes are used to cleave the DNA molecules

    • E. 

      All of the above

  • 9. 
    A woman has a gene that causes a visual disorder. To prevent the gene from appearing in future generations, the defective gene would have to be repaired in the mother's (Standard 5.2h):
    • A. 

      Eye

    • B. 

      Uterus

    • C. 

      Nervous system

    • D. 

      Reproductive cells

    • E. 

      Epidermal cells

  • 10. 
    A mutagen implicated in cancer is (Standard 5.2i):
    • A. 

      Ultraviolet light

    • B. 

      A restriction enzyme

    • C. 

      Bacteria

    • D. 

      Caffeine

    • E. 

      A vector

  • 11. 
    Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how much you now know about molecular genetics.
  • 12. 
    Rate, on a scale of 1 – 4, 1 being the lowest and 4 being the highest, how interested are you now in molecular genetics.