11.2 Vocabulary Quiz

1. What is DNA primarily responsible for in living organisms?

• Energy production
• Protein synthesis
• Genetic information storage and transmission
• Cell membrane formation

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2. The term "Double Helix" refers to:

• A single spiral structure
• Two intertwined spiral strands
• A flat circular molecule
• Four connected chains

3. Which type of bonds hold the two DNA strands together?

• Covalent bonds
• Ionic bonds
• Hydrogen bonds
• Peptide bonds

4. According to Chargaff's rule:

• All bases appear in equal amounts
• Adenine equals thymine, and guanine equals cytosine
• Purines are more abundant than pyrimidines
• All nucleotides are randomly distributed

5. What sugar is found in DNA?

• Ribose
• Fructose
• Deoxyribose
• Glucose

6. Which technique was crucial in determining DNA's structure?

• Electron microscopy
• X-ray crystallography
• Mass spectrometry
• Gel electrophoresis

7. A nucleotide consists of:

• Only sugar and phosphate
• Only nitrogenous base and sugar
• Sugar, phosphate, and a nitrogenous base
• Two nitrogenous bases

8. Which base pair is correctly matched?

• Adenine with Guanine
• Cytosine with Thymine
• Adenine with Thymine
• Guanine with Thymine

9. What is the primary role of phosphate in DNA?

• Forms the sugar-phosphate backbone
• Connects base pairs
• Provides energy
• Creates hydrogen bonds

10. Which scientists study DNA and its functions?

• Physicists
• Geologists
• Biologists
• Astronomers

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NGSS.HS-LS1-1

NGSS.HS-LS3-1

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