BIOL 250 Final Exam Questions with
All Correct Answers 2026 Updated.
what types of biological molecules replicate DNA? - Answer proteins
what processes occur during interphase? - Answer DNA replication
organelle replication
RNA synthesis
protein synthesis
is DNA, RNA, or both produced by DNA polymerase? - Answer DNA
you observe that Gene X is highly expressed in neurons but is not expressed in intestinal cells. If
you could assess the chromatin surrounding Gene X in both cell types, what would expect to
observe? - Answer high levels of DNA methylation in intestinal cells
Which of the following mutations would most likely disrupt the nuclear localization of a protein?
Normal: Pro - Pro - Lys - Lys - Lys - Arg - Lys - Val - Answer pro-pro-asp-lys-lys-arg-lys-val
only _____ contains ribose - Answer RNA
molecules are made of ________ that are attached by chemical bonds formed by sharing,
gaining, or losing _________. - Answer isotopes / electrons
how is M-phase rapidly triggered by M-Cdks? - Answer M-cyclin/cdk complex is held inactive
by phosphorylation and is rapidly activated by Cdc25
protein domains are sequences of amino acids that are similar in many different proteins and
lead to different proteins that are made of similar 'parts'. what is the most likely explanation for
the evolution of protein domains? - Answer exons are shuffled to new genes
rNA in cells differs from DNA in that _____________ - Answer it is single-stranded and can
fold into a variety of structures
where would you predict a protein to be localized if it has a chain of hydrophobic amino acids at
the N-terminus? - Answer ER
, which of the following amino acids would you expect to find on the surface of a protein? -
Answer serine
what are the steps of protein transport across the ER? - Answer 1 - begins in cytosol
2 - ER signal binds to SRP (stalls)
3 - ribosome anchored to membrane by SRP
4 - ER signal transferred to the protein translator
5 - protein is transferred across membrane
6 - signal peptidase cleaves the ER signal and protein is released in ER lumen
what is related to transcription? - Answer RNA polymerase
general transcription factors
terminator
sigma factor
splicing
what is related to DNA replication? - Answer origin of replication
primase
DNA polymerase
helicase
what is related to translation? - Answer ribosome
tRNA synthetase
tRNA
start codon
amino acids
what are haploid cells? - Answer sperm / egg
what are diploid cells? - Answer germ line cell
skin cell
blood cell
All Correct Answers 2026 Updated.
what types of biological molecules replicate DNA? - Answer proteins
what processes occur during interphase? - Answer DNA replication
organelle replication
RNA synthesis
protein synthesis
is DNA, RNA, or both produced by DNA polymerase? - Answer DNA
you observe that Gene X is highly expressed in neurons but is not expressed in intestinal cells. If
you could assess the chromatin surrounding Gene X in both cell types, what would expect to
observe? - Answer high levels of DNA methylation in intestinal cells
Which of the following mutations would most likely disrupt the nuclear localization of a protein?
Normal: Pro - Pro - Lys - Lys - Lys - Arg - Lys - Val - Answer pro-pro-asp-lys-lys-arg-lys-val
only _____ contains ribose - Answer RNA
molecules are made of ________ that are attached by chemical bonds formed by sharing,
gaining, or losing _________. - Answer isotopes / electrons
how is M-phase rapidly triggered by M-Cdks? - Answer M-cyclin/cdk complex is held inactive
by phosphorylation and is rapidly activated by Cdc25
protein domains are sequences of amino acids that are similar in many different proteins and
lead to different proteins that are made of similar 'parts'. what is the most likely explanation for
the evolution of protein domains? - Answer exons are shuffled to new genes
rNA in cells differs from DNA in that _____________ - Answer it is single-stranded and can
fold into a variety of structures
where would you predict a protein to be localized if it has a chain of hydrophobic amino acids at
the N-terminus? - Answer ER
, which of the following amino acids would you expect to find on the surface of a protein? -
Answer serine
what are the steps of protein transport across the ER? - Answer 1 - begins in cytosol
2 - ER signal binds to SRP (stalls)
3 - ribosome anchored to membrane by SRP
4 - ER signal transferred to the protein translator
5 - protein is transferred across membrane
6 - signal peptidase cleaves the ER signal and protein is released in ER lumen
what is related to transcription? - Answer RNA polymerase
general transcription factors
terminator
sigma factor
splicing
what is related to DNA replication? - Answer origin of replication
primase
DNA polymerase
helicase
what is related to translation? - Answer ribosome
tRNA synthetase
tRNA
start codon
amino acids
what are haploid cells? - Answer sperm / egg
what are diploid cells? - Answer germ line cell
skin cell
blood cell
