5 Questions
What is the role of helicase in DNA replication?
Unwinds the DNA strand
Which nitrogenous base pairs with adenine in RNA?
Uracil
What is the function of ligase in DNA replication?
Binds the Okazaki fragments in a lagging strand
What type of sugar does RNA contain?
Ribose sugar
What is the role of primase in DNA replication?
Prepares RNA primer for DNA polymerase
Study Notes
Molecular Components of DNA and RNA
- DNA has four components: phosphate group, nitrogenous base (adenine, guanine, thymine, cytosine), sugar group.
- DNA replication involves four stages: helicase unwinds the DNA strand, primase instructs the direction to polymerase, polymerase builds the new DNA strand, ligase binds Okazaki fragments in the lagging strand.
- RNA, or ribonucleic acid, plays a crucial role in protein synthesis and gene regulation.
- RNA is composed of nucleotides, each consisting of a ribose sugar, a phosphate group, and a nitrogenous base (adenine, uracil, cytosine, guanine).
- Unlike DNA, RNA contains ribose sugar instead of deoxyribose sugar.
- RNA has four types of nitrogenous bases: adenine, uracil, cytosine, and guanine.
- Adenine pairs with uracil in RNA, unlike in DNA where adenine pairs with thymine.
Test your knowledge of DNA replication with this quiz! Identify the components of a DNA molecule, understand the roles of helicase, primase, polymerase, and ligase in DNA replication, and grasp the process of linking nucleotides together. This quiz will challenge your understanding of the key stages and components involved in DNA replication.
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