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

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Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Distinct forms of one gene are known as
  1. genotypes
  2. phenotypes
  3. alleles
  4. polygenetic traits
Grade 9 DNA, RNA, and Genetics
What is a nucleoid?
  1. A membrane-enclosed organelle
  2. An area where genetic material is found
  3. A small bomb
  4. None of the above
Grade 9 DNA, RNA, and Genetics
Chromosomes are made of DNA and what type of proteins?
  1. Homologous
  2. Histone
  3. Molecular
  4. Nucleic
Grade 9 DNA, RNA, and Genetics
Mutations always result in                        .
  1. a change in the trait
  2. a change in the protein
  3. a change in the DNA
  4. a change in the gene
Grade 9 DNA, RNA, and Genetics
Phase II clinical trials happen directly after
  1. animal testing.
  2. Phase I clinical trials for safety.
  3. Phase I clinical trials for effectiveness.
  4. Phase I clinical trials for disease.
Grade 9 DNA, RNA, and Genetics
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
Mutations are always                .
  1. harmful
  2. helpful
  3. deleterious
  4. random
Grade 9 DNA, RNA, and Genetics
Which of the following is the function of tRNA?
  1. The copy of the DNA that goes from the nucleus to the ribosome
  2. Matches up with mRNA and has an amino acid on its top
  3. Site where polypeptide chain is made from amino acids
  4. None of these
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