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- 1. Multiple Choice
There are 8 components present in nucleic acids in the box. Use the DNA structure and the list of components to determine which components bond with adenine in a section of DNA?
1,3,5, and 6 only
3,5
2, 4
3,4, 7, and 8 only
- 2. Multiple Choice
Students are given data from an investigation that identified some of the chemical elements present in four different samples. Which sample was most likely DNA?
Sample 1
Sample 2
Sample 3
Sample 4
- 3. Multiple Choice
A model of the DNA molecule is shown below. The arrow indicates ---
The bond between adjacent phosphate and deoxyribose molecules
The junction of introns and exons in the sense strand of DNA
The hydrogen bond between complementary nucleotides
the junction of a codon and a DNA triplet
- 4. Multiple Choice
A segment of a DNA strand is shown. Which of these is the correct complementary DNA strand for the segment shown?
5' AGGTCAGGT 3'
5' ACCUGAGGU 3'
5' TGGACTGGA 3'
5' TCCACTCCA 3'
- 5. Multiple Choice
A student used poster board to construct this model of a section of DNA. Which statement describes this model of DNA?
The model is inaccurate because some typical bases in DNA are missing
The model is accurate because it contains correctly paired bases
The model is accurate because it shows each base splitting to form a double helix
the model is inaccurate because the base pairs are incorrect
- 6. Multiple Choice
Each strand of a DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A diagram of a section of DNA is shown. Which DNA Strand is complementary to the one shown below?
5' AGUGCUGCGCGUA 3'
5' TGTAGCTCGGCGT 3'
5' ACATCGACGCGCA 3'
TCGCGCAGCTACA 3;
- 7. Multiple Choice
Which part of a DNA molecule is responsible for the direct doing of specific traits in an organism?
the number of hydrogen bonds that hold the strands of DNA together
The number of carbons in the DNA molecule.
The sequence of phosphates along each DNA strand.
The sequence of nucleotide bases in the DNA strand.
- 8. Multiple Choice
Differences in traits such as hair texture are determined by differences in
the location of sugar groups in DNA
The sequence of nucleotides in DNA
the number of nitrogenous bases in DNA
the molecules attached to the phosphate in DNA
- 9. Multiple Choice
Nitrogenous bases are located on both strand of the DNA double helix. What is the significance of the nitrogenous bases?
The number of adenines and cytosines determines the type of RNA that will be produced.
The amount of thymine and guanine in the DNA molecules determines the length of the genes
the order of nitrogenous bases determines the order of amino acids in the proteins synthesized
- 10. Multiple Choice
The sequence of nitrogenous bases in DNA varies widely. The sequence of the bases in DNA is most important for which of the following?
Providing the instructions for the traits of an organism.
Preventing mutations from occurring during DNA replication.
Allowing the DNA to have the shape necessary for replication.
Helping form the sugar-phosphate backbone of DNA molecules
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