Molecular Genetics Unit Post-assessment (Grade 8)

12 Questions | Total Attempts: 51

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Molecular Genetics Unit Post-assessment (Grade 8)

Molecular Genetics Unit Pre-Assessment (Grade 8)


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. 

      D

    • B. 

      C

    • C. 

      B

    • D. 

      A

    • 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. 
    Last Thursday, Ms. Neptune was in her room working. There was some pizza on her desk. At 3:20 P.M., Ms. Neptune needed to leave the room. At 3:30 P.M. when she returned, she found several pieces of pizza were half eaten with saliva (dribble) all over the pieces. She had noticed several people running from her room. Unfortunately, due to a power outage after school, the video cameras that would have detected this situation were not functional. Three students were noticed running from the scene, and their names were given to Ms. Neptune. Ms. Neptune demanded saliva samples from these students. The three students were Amanda, Emily, and Danielle. She took those saliva samples along with a standard sample taken from the dribble on the pizza to a local college for DNA testing. The results of this testing are indicated in the diagram below.Based on the results of this laboratory test, which student(s) are most likely not guilty (Standard 2.2e):
    • A. 

      Emily it the only innocent student

    • B. 

      Amanda is the only innocent student

    • C. 

      Danielle is the only innocent student

    • D. 

      Emily and Amanda are not guilty

    • E. 

      Emily and Danielle are not guilty

  • 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 already 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 in molecular genetics.
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