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- 1. Multiple Choice
What would strand II normally include?AGCTCGTACGAT - 2. Multiple ChoiceNitrogenous bases are located on both strands 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 producedThe order of nitrogenous bases determines the order of amino acids in the proteins synthesizedThe type of hydrogen bonding between the nitrogenous bases determines which amino acid will be added to the peptide chainThe amount of thymine and guanine in the DNA molecules determines the length of the genes
- 3. Multiple ChoiceEach 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.5'AGU GCU GCG CGU A5'TGT AGC TGC GCG TACA TCG ACG CGC ATCG CGC AGC TAC A
- 4. Multiple ChoiceA segment of DNA is represented in the illustration. How is information for a specific protein carried on the DNA molecule?As a sequence of nucleotidesIn the double-helix shape of the condensed chromosomeIn the ratio of adenines to thyminesAs a pattern of phosphates and sugars
- 5. Multiple ChoiceA student builds a model of a DNA model. Which model shows bases complementary to the ones on the student's DNA model?CTACCGACGUCGGUAGGTCGGAAGGTCGGTAG
- 6. Multiple ChoiceThe 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 organismPreventing mutations from occuring during RNA replicationAllowing the DNA to have the shape necessary for replicationHelping form the sugar-phosphate backbone of DNA molecules
- 7. Multiple ChoiceIn 1952, Rosalind Franklin took the x-ray photograph shown, which gave the world its first look at DNA. By studying this photograph, scientists gained knowledge about therole of DNA in protein synthesismutation of nucleotide sequences in DNAsequence of DNA that makes up the human genomedouble-helix structure of DNA
- 8. Multiple ChoiceA model of DNA is shown. The arrow indicatesthe bond between adjacent phosphate and deoxyribose moleculesthe junction of introns and exons in the sense strand of DNAthe hydrogen bond between complementary nucleotidesthe junction of a codon and a DNA triplet
- 9. Multiple ChoiceCharacteristics such as a widow's peak or attached earlobes are determined by the genetic code. Which components of DNA are referred to as the genetic code?phosphate groupsnitrogenous basesdeoxyribose sugarshydrogen bonds
- 10. Multiple ChoiceHow does DNA in cells determine an organism's complex traits?DNA contains codes for proteins, which are necessary for the growth and fuctioning of an organismDNA seperates into long single strands that make up each part of an organismDNA produces the energy an organism needs in order to growDNA folds into the nucleus of each of the cells of an organism
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