BIO 2990: MODULE 2
MOLECULAR BIOLOGY PT 1
EXAM 2025 QUESTIONS AND
ANSWERS 100% PASS
How do nucleotides connect to adjacent nucleotides in the structure of DNA? - ✔✔Via
a covalent bond between the 3' hydroxyl of one nucleotide and the 5' phosphate of the
other
which of the following best differentiates DNA and RNA? Select all that apply. -
✔✔RNA contains the base uracil in place of thymine, which is in DNA & RNA is single-
stranded and DNA is double stranded
For the initiation of transcription in bacteria, RNA polymerase binds to what region on
the gene? - ✔✔promoter
What is a codon? - ✔✔Three bases on the mRNA that is read by the ribosome in the 5' to
3' direction
Wha would you use to measure the optical density of a bacterial culture? - ✔✔a
spectrophotometer
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
MOLECULAR BIOLOGY PT 1
EXAM 2025 QUESTIONS AND
ANSWERS 100% PASS
How do nucleotides connect to adjacent nucleotides in the structure of DNA? - ✔✔Via
a covalent bond between the 3' hydroxyl of one nucleotide and the 5' phosphate of the
other
which of the following best differentiates DNA and RNA? Select all that apply. -
✔✔RNA contains the base uracil in place of thymine, which is in DNA & RNA is single-
stranded and DNA is double stranded
For the initiation of transcription in bacteria, RNA polymerase binds to what region on
the gene? - ✔✔promoter
What is a codon? - ✔✔Three bases on the mRNA that is read by the ribosome in the 5' to
3' direction
Wha would you use to measure the optical density of a bacterial culture? - ✔✔a
spectrophotometer
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
