Exam: Structure of DNA and RNA 1. Deoxyribonucleic Acid is abbreviated: a. DRNA b. DNA c. RNA d. MRNA
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1 Exam: Structure of DNA and RNA 1. Deoxyribonucleic Acid is abbreviated: a. DRNA b. DNA c. RNA d. MRNA 2. Which two scientists discovered DNA? a. Mendel and Newton b. Bohr and Crick c. Watson and Crick d. Watson and Mendel 3. The structure of DNA has alternating sides of sugars and groups. a. Nitrogen b. Oxygen c. Phosphate d. Both A and B e. None of the above 4. True or False: The ladder is twisted on a DNA structure and forms a double helix (double coil). 5. Each nucleotide is made up of which 4 structures? a. Sugar, deoxyribose, a phosphate group and a base b. Sugar, ribose, sulfate, and a carbon group c. Sugar, ribose, oxygen and carbon d. Deoxyribose, ribose, a phosphate group, and a base 6. Which two bases of DNA are purines? 7. Which two bases of DNA are pyrimidines?
2 8. The process of DNA duplicating an exact copy of itself is called? a. Duplication b. Mirror imaging c. Replication d. Reproducing 9. True or False: DNA separates into two halves, and exposes the nucleotide bases to materials in the nucleus? 10. When does a certain DNA molecule stop replicating? a. Until 2 exact DNA molecules are formed. b. Until the DNA runs out of ATP, and eventually dies. c. DNA does not replicate. d. DNA does not stop replicating. 11. How is (are) RNA different from DNA? a. Both RNA and DNA are identical. b. RNA is single stranded and DNA is double stranded. c. The pyrimidine in RNA is uracil; the pyrimidine in DNA is thymine. d. Both B and C e. None of the above. 12. DNA is built up of small subunits called: a. Nucleotides. b. Genes. c. Proteins d. Cells 13. The bases in DNA are held together with which type of bond? a. Covalent b. Ionic c. Polar d. Hydrogen 14. True or False: Each human chromosome contains several hundred nucleotides in a single strand of DNA. Pair up each DNA base to its complementary base
3 Adenine Guanine Thymine Cytosine A. Adenine B. Guanine C. Thymine D. Cytosine Exam Answers: Structure of DNA and RNA 1. Deoxyribonucleic Acid is abbreviated: a. DRNA b. DNA c. RNA d. MRNA 2. Which two scientists discovered DNA? a. Mendel and Newton b. Bohr and Crick c. Watson and Crick d. Watson and Mendel 3. The structure of DNA has alternating sides of sugars and groups. a. Nitrogen b. Oxygen c. Phosphate d. Both A and B e. None of the above 4. True or False: The ladder is twisted on a DNA structure and forms a double helix (double coil). 5. Each nucleotide is made up of which 4 structures? a. Sugar, deoxyribose, a phosphate group and a base b. Sugar, ribose, sulfate, and a carbon group c. Sugar, ribose, oxygen and carbon d. Deoxyribose, ribose, a phosphate group, and a base 6. Which two bases of DNA are purines? 7. Which two bases of DNA are pyrimidines?
4 8. The process of DNA duplicating an exact copy of itself is called? a. Duplication b. Mirror imaging c. Replication d. Reproducing 9. True or False: DNA separates into two halves, and exposes the nucleotide bases to materials in the nucleus? 10. When does a certain DNA molecule stop replicating? a. Until 2 exact DNA molecules are formed. b. Until the DNA runs out of ATP, and eventually dies. c. DNA does not replicate. d. DNA does not stop replicating. 11. How is (are) RNA different from DNA? a. Both RNA and DNA are identical. b. RNA is single stranded and DNA is double stranded. c. The pyrimidine in RNA is uracil; the pyrimidine in DNA is thymine. d. Both B and C e. None of the above. 12. DNA is built up of small subunits called: a. Nucleotides. b. Genes. c. Proteins d. Cells 13. The bases in DNA are held together with which type of bond? a. Covalent b. Ionic c. Polar d. Hydrogen 14. True or False: Each human chromosome contains several hundred nucleotides in a single strand of DNA. Correct Answer: Each human chromosome contains several million nucleotides in a single strand.
5 Pair up each DNA base to its complementary base C Adenine D _ Guanine A_ Thymine B _ Cytosine A. Adenine B. Guanine C. Thymine D. Cytosine
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