DNA/RNA Structure & DNA Replication Review

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. a nucleic acid made of nucleotides

• b. contains the sugar ribose

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

• d. 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 (a)   .

• 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 (a)   molecule.

• semiconservative

• denatured

• mutated

• fluid mosaic

In RNA, A always pairs with (a)   .

• C

• U

• T

• G

Which of the following is not a type of RNA?

• mRNA

• uRNA

• tRNA

• rRNA

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

• a. DNA polymerase

• b. ligase

• c. helicase

• d. suitcase