Quiz: DNA/RNA Structure & Replication

What is the long name for DNA?

• deoxynucleic acid

• deoxyribonucleic acid

• denatured ribonucleic acid

• deoxyribonuclear acid

Which of the following descriptions does NOT describe RNA?

• a nucleic acid made of nucleotides

• contains the sugar ribose

• contains the nitrogenous bases: adenine, guanine, thymine, and cytosine

• a single-stranded structure

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

• ATTCG

• TAAGC

• CGGTA

• UAAGC

During which phase of cell division does DNA replicate?

• prophase

• metaphase

• cytokinesis

• S phase

The process by which DNA makes a copy of itself is known as ______.

• replication
• denaturation
• synthesis
• mitosis

Which of the following statements is true of DNA but not RNA?

• made of a sugar, phosphate and nitrogenous base

• contains the nitrogenous bases A, U, C, G

• is a nucleic acid

• contains the nitrogenous bases A, T, C, G

DNA replication uses existing DNA as a template to make new DNA. Therefore, it is a ____ molecule.

• semiconservative
• denatured
• mutated
• fluid mosaic

In RNA, A always pairs with ____.

• C
• U
• T
• G

Which of the following is not a type of RNA?

• mRNA

• uRNA

• tRNA

• rRNA

During DNA replication, enzymes perform functions (jobs) to ensure that the DNA is copied appropriately. Which enzyme is responsible for “unzipping” the original strand of DNA?

• DNA polymerase

• ligase

• helicase

• suitcase