Nucleic Acid EA Flashcards
what is added to a nucleoside to form a nucleotide
phosphate group
how many thymine nucleotides are present in a DNA molecule with 214 base pairs and guanine?
107 (wrong)
214
53
71
Which is correct about the replication of DNA?
the resulting double helix is composed of an old strand and a new strand
What type of RNA has an acceptor arm?
transfer RNA
In DNA or RNA, a sugar of one nucleotide connects the phosphate group of another nucleotide forming a backbone through
phosphodiester bond
What kind of nitrogenous base is adenine?
purine
To what carbon position of deoxyribose does the absence of hydroxyl group?
2nd carbon
What type of sugar is the sugar present in the backbone of RNA?
pentose
Describing antiparallel orientation of DNA, what is attached in the 5th carbon of deoxyribose?
phosphate group
All of the following are components of a nucleotide except
nitrogenous base
amino acid
phosphate group
sugar
amino acid
a purine base is attached to a pyrimidine base by means of
hydrogen bond
all messenger RNAs are read in what directon
5’ to 3’
in DNA or RNa, a sugar of one nucleotide connects the phosphate group of another nucleotide forming a backbone through
phosphodiester bond
