10 Questions
What are the components of DNA and what is the polarity of the DNA molecule?
The components of DNA are sugar, nitrogenous base, and phosphate. The polarity of the DNA molecule is 5'-3', with one end chemically different from the other end. The 5' end contains a phosphate group, and the 3' end contains OH.
Describe the structure of DNA.
DNA is a linear polymer of nucleotides. It has a backbone consisting of alternating sugar and phosphate groups, connected by phosphodiester bond. The bases project away from the backbone. The DNA molecule is antiparallel with complementary strands, where A pairs with T and C pairs with G.
What is the role of histones in DNA structure?
Histones are proteins that DNA can wrap around. They play a role in packaging DNA into the nucleus and help in the folding and organization of the DNA molecule.
What is Chargaff's rule?
Chargaff's rule states that the total amount of purines (adenine and guanine) in DNA will be equal to the total amount of pyrimidines (thymine and cytosine).
How is genetic information stored and transmitted in DNA?
Genetic information is stored in DNA through the sequence of bases. Any mutation within those bases can lead to genetic mutations.
Which end of a DNA molecule contains a phosphate group?
5' end
Which carbon of the sugar molecule is linked to the phosphate group in the DNA backbone?
3' carbon
Which statement accurately describes the orientation of the DNA strands in a double helix?
Antiparallel and complementary
Which nitrogenous base pairs with adenine in DNA?
Thymine
What is the role of histones in DNA structure?
Histones stabilize the DNA molecule
Test your knowledge on the structure and components of DNA with this quiz! Learn about the sugar, nitrogenous base, and phosphate components, as well as the 5'-3' polarity and the linear polymers of nucleotides. Challenge yourself to understand the backbone structure and the role of phosphate groups in linking sugar molecules.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
