Structure & DNA Replication Quiz

What is the long name for DNA?

• deoxynucleic acid
• deoxyribonucleic acid
• denatured ribonucleic acid
• deoxyribonuclear acid

Which of the following correctly describes the structure of DNA?

• Single-stranded helix with uracil
• Double helix with adenine pairing with thymine
• Triple helix with random base pairing
• Single strand with random nucleotides

What forms the backbone of DNA?

• Nitrogenous bases
• Hydrogen bonds
• Sugar molecules
• Sugar-phosphate groups

What holds complementary bases together in DNA?

• Phosphodiester bonds
• Hydrogen bonds
• Covalent bonds
• Ionic bonds

Which best describes the antiparallel nature of DNA?

• Strands run in opposite directions
• Bases pair randomly
• Strands are parallel
• Bases are identical

What is the structure of RNA?

• Double-stranded helix
• Triple-stranded molecule
• Single-stranded molecule
• Circular molecule

If one strand of a DNA molecule contains the letters ATTCG, what would be the letters in the complementary strand?

• ATTCG
• TAAGC
• CGGTA
• UAAGC

Where is DNA located in eukaryotes?

• ribosome
• cytoplasm
• lysosomes
• nucleus

In RNA, A always pairs with ____.

• C
• U
• T
• G

Which of the following is not a type of RNA?

• mRNA
• uRNA
• tRNA
• rRNA