10 Questions
What is the primary genetic material for the majority of organisms?
Deoxyribonucleic acid (DNA)
In which organisms does RNA act as the genetic material?
Some viruses
Apart from being a messenger, what additional roles does RNA have?
Structural and catalytic
What are nucleic acids polymers of?
Nucleotides
Which chapter in the book addresses the molecular basis of inheritance?
Chapter 5: Molecular Basis of Inheritance
Which components make up a nucleotide?
Nitrogenous base, phosphate group, deoxyribose sugar
What is the characteristic of an organism defined by the length of its DNA?
Number of nucleotides
What forms the backbone of a polynucleotide chain?
Phosphate groups
Which nitrogenous base is present in DNA but not in RNA?
Thymine
What is the characteristic end of a polynucleotide chain that contains a free phosphate moiety at the 5' end of the sugar?
5'-end
Study Notes
Genetic Material
- DNA is the primary genetic material for the majority of organisms.
RNA as Genetic Material
- RNA acts as the genetic material in some organisms, such as certain viruses.
RNA Roles
- Apart from being a messenger, RNA has additional roles, including acting as a genetic material and catalyst.
Nucleic Acids
- Nucleic acids are polymers of nucleotides.
Molecular Basis of Inheritance
- Chapter [insert chapter number] in the book addresses the molecular basis of inheritance.
Nucleotide Components
- A nucleotide is composed of three components: a sugar molecule, a phosphate group, and a nitrogenous base.
Organism Characteristics
- An organism's characteristic can be defined by the length of its DNA.
Polynucleotide Chain
- The backbone of a polynucleotide chain is formed by sugar molecules and phosphate groups.
Nitrogenous Bases
- Thymine is a nitrogenous base present in DNA but not in RNA.
Polynucleotide Chain End
- The 5' end of a polynucleotide chain contains a free phosphate moiety, characterizing it as a distinct end.
Test your knowledge of Chapter 5 which covers topics such as DNA, genetic material, RNA, replication, transcription, genetic code, translation, gene expression regulation, human genome project, and DNA fingerprinting.
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