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Ninth Grade (Grade 9) DNA, RNA, and Genetics Questions

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Grade 9 DNA, RNA, and Genetics
In the ladder analogy of the DNA molecule, the "rungs" (steps) of the ladder are
  1. sugars
  2. phosphates
  3. paired nitrogenous bases
  4. joined sugar and phosphate
Grade 9 DNA, RNA, and Genetics
What is the backbone of the DNA chain?
  1. phosphate groups and sugars
  2. nucleotides
  3. hydrogen bongs and nitrogenous bases
  4. RNA
Grade 9 DNA, RNA, and Genetics
Where is DNA located in a cell?
  1. The Cytoplasm.
  2. The Mitochondria.
  3. The Nucleus.
  4. The Cell Wall.
Grade 9 DNA, RNA, and Genetics
Who discovered the double helix structure of DNA?
  1. Erwin Chargaff.
  2. James Watson and Francis Crick.
  3. Rosalind Franklin.
  4. Hershey and Chase.
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
When do cells duplicate their DNA?
  1. During the S Phase of Interphase.
  2. During Mitosis
  3. During the G2 phase of Interphase.
  4. During Cytokinesis.
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
When did Mendel do his investigations in genetics?
  1. with complete knowledge of DNA and chromosomes
  2. before DNA was discovered
  3. at the same time that Watson and Crick were working on their model
  4. using an electron microscope to see the genes he was working with
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
All of the chromosomes other than the X and Y chromosomes are known as these.
  1. sex chromosomes
  2. homologous chromosomes
  3. sister chromosomes
  4. autosomes
    .
Grade 9 DNA, RNA, and Genetics
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