BIOD 102 Module 1 : Essential Biology II w/Lab: Questions & Answers: Updated Solution

Interphase and the mitotic phase are the two main phases of the cell cycle. Interphase is described in sub-phases including (G1, S, and G2) where the cell's life is most spent; this part of the cell cycle is when the cell is preparing for DNA replication. The mitotic phase or mitosis is the phase where the cell separates into two daughter cells through cytokinesis. Match each of the following terms with the correct description. 2/20/25, 9:33 AM Module 1 Problem Set: Essential Biology II w/Lab - Phillips - 2024B Origin of replication Encodes for a “start” signal You Answered Topoisomerase Untwists and separates the Breaks the hydrogen bonds of nucleotide bases You Answered Helicase Breaks the hydrogen bonds Untwists and separates the helix parent strands Correct! Replication fork Y-shaped area when the DN  Question 3 Not yet graded / 0 pts Your Answer: Answer: DNA polymerases are enzymes that add nucleotides to the 3’ end of the existing chain via dehydration reactions (See section 1.1 in module). What are DNA polymerases? DNA polymerases is an enzyme that is responsible for assembling nucleotides to replicate and repair DNA. The two types we mentioned include DNA polymerase III and DNA polymerase I; both responsible for aspects of DNA replication. DNA Pol III is involved in adding nucleotides in the 5' to 3 direction during leading strand synthesis. During lagging strand synthesis, DNA Pol III is responsible for adding nucleotides in between the RNA primers while DNA Pol I replaces the RNA primers with DNA in order to complete the strand