What is the process of copying and duplicating a DNA molecule called?

• DNA Translation

• DNA Replication

• DNA Transcription

• DNA Mutation

Which enzyme is responsible for unwinding the DNA helix?

• DNA Ligase

• DNA Helicase

• DNA Polymerase

• RNA Primase

Why is it important for each daughter cell to receive an identical copy of the DNA when a cell divides?

• To ensure that the daughter cells have different genetic information

• To maintain the species' genetic diversity

• To ensure that the daughter cells have the same genetic information as the parent cell

• To allow for genetic mutations to occur more frequently

During which phase of the cell cycle does DNA replication occur?

• G1 phase

• S phase

• M phase

• G2 phase

Which nucleotides pair together in DNA?

• Adenine with guanine, and cytosine with thymine

• Adenine with cytosine, and guanine with thymine

• Adenine with thymine, and cytosine with guanine

• All nucleotides pair randomly

What does it mean when we say that the two strands of DNA are complementary to each other?

• They have the same sequence of nucleotides

• They have no relation to each other

• They are identical in structure

• They have sequences that match up such that adenine pairs with thymine and cytosine pairs with guanine

What does "antiparallel" mean?

• Two lines that intersect at a right angle

• Two lines that never intersect

• Two lines that are parallel and run in the same direction

• Two lines that are parallel but run in opposite directions

In which direction is DNA synthesized?

• From 3' to 5'

• From 5' to 3'

• From left to right

• From right to left

Which end of the DNA strand has the phosphate group attached?

• 5' end

• 3' end

• Both 5' and 3' ends

• Neither end

Where are new nucleotides added during DNA synthesis?

• To the 5' end of the growing strand

• To the 3' end of the growing strand

• To the middle of the DNA strand

• To both ends of the DNA strand simultaneously