Podcast
Questions and Answers
What is the backbone of the double-helix structure of DNA made of?
What is the backbone of the double-helix structure of DNA made of?
- Polypeptides
- Sugar-phosphate (correct)
- Nucleotides
- Amino acids
How are the two polynucleotide chains in DNA arranged with respect to polarity?
How are the two polynucleotide chains in DNA arranged with respect to polarity?
- Parallel
- Orthogonal
- Antiparallel (correct)
- Complementary
What type of bonds pair the bases in the two strands of DNA?
What type of bonds pair the bases in the two strands of DNA?
- Peptide bonds
- Ionic bonds
- Covalent bonds
- Hydrogen bonds (correct)
Which of the following nucleotide base pairs with Thymine in DNA?
Which of the following nucleotide base pairs with Thymine in DNA?
In the double helix structure of DNA, what is the approximate distance between each base pair?
In the double helix structure of DNA, what is the approximate distance between each base pair?
How many base pairs are there approximately in each turn of the DNA double helix?
How many base pairs are there approximately in each turn of the DNA double helix?
What confers stability to the helical structure of DNA, in addition to H-bonds?
What confers stability to the helical structure of DNA, in addition to H-bonds?
Which scientist proposed the Central dogma in molecular biology, stating the flow of genetic information from DNA to RNA to Protein?
Which scientist proposed the Central dogma in molecular biology, stating the flow of genetic information from DNA to RNA to Protein?
What is the name of the reverse flow of genetic information in some viruses, from RNA to DNA?
What is the name of the reverse flow of genetic information in some viruses, from RNA to DNA?
How is the length of a DNA double helix typically calculated in a mammalian cell?
How is the length of a DNA double helix typically calculated in a mammalian cell?
What is the approximate length of a DNA double helix in a typical mammalian cell?
What is the approximate length of a DNA double helix in a typical mammalian cell?
In prokaryotes like E.coli, where is the DNA packaged despite the absence of a defined nucleus?
In prokaryotes like E.coli, where is the DNA packaged despite the absence of a defined nucleus?
What did the Watson-Crick model suggest about the genetic material?
What did the Watson-Crick model suggest about the genetic material?
Which term best describes the replication process proposed by the Watson-Crick model?
Which term best describes the replication process proposed by the Watson-Crick model?
In the Meselson-Stahl experiment, what was used as the heavy isotope for nitrogen?
In the Meselson-Stahl experiment, what was used as the heavy isotope for nitrogen?
How did Meselson and Stahl distinguish between heavy DNA and normal DNA in their experiment?
How did Meselson and Stahl distinguish between heavy DNA and normal DNA in their experiment?
Which organism was first used to demonstrate semiconservative DNA replication according to the text?
Which organism was first used to demonstrate semiconservative DNA replication according to the text?
What did the Meselson-Stahl experiment prove about DNA replication?
What did the Meselson-Stahl experiment prove about DNA replication?
