FMBG Lecture 1 - Nucleotides, Nucleic Acids, and DNA

Question 0

list the pyrimidines

which among these are analogoous

Answer 0

cytosine, thymine, and uracil

thymine and uracil are analogous (think DNA vs RNA)

Question 1

list the purines

Answer 1

adenine and guanine

Question 2

Attaching a ribose sugar to a nitrogenous base creates a _____

Answer 2

nucleoside

Question 3

attaching a phosphate group to a nucleoside generates a ______

Answer 3

nucleotide

Question 4

The most important distinguishing factor between the ribonucleotides (found in RNA) and deoxyribonucleotides (found in DNA) is the ___(position, group).

Answer 4

2’ OH group

in deoxyribonucleotides the OH at the 2’ position is replaced with a hydrogen molecule

Question 5

In the DNA alpha helix, R-groups point ___(in, out), and the structure is stabilized by ____

Answer 5

out

linear hydrogen bonding between the bases

Question 6

in DNA, ___ binds to ____ via two hydrogen bonds.

___ binds to ___ via three hydrogen bonds

Answer 6

adenine
thymine

guanine
cytosine