Multiple ChoiceIn the DNA double helix, what structural feature gives DNA an overall negative charge at physiological pH?13views
Multiple ChoiceIn a single DNA strand, what type of bond links nucleotides together to form the sugar-phosphate backbone?2views
Multiple ChoiceWho proposed the first accurate model of DNA structure (the double helix) in 1953?9views
Multiple ChoiceIn the context of DNA structure, who is most commonly credited with proposing the double-helix model of DNA in 1953?3views
Multiple ChoiceIn the context of DNA structure, who is credited with discovering the base-pairing rules (A pairs with T, and G pairs with C) for DNA?14views
Multiple ChoiceWhich option correctly describes a key structural difference between DNA and RNA?4views