Bio 151 Final Exam Review Questions
with Correct Answers
What type of bond links amino acids into a protein chain - Answer-peptide bond
What are the three components of a nucleotide? - Answer-Sugar, phosphate group,
nitrogenous base
What will determine whether a particular chain of amino acids is hydrophobic or
hydrophilic? - Answer-The R-groups in that part of the peptide
If a hydrophilic signal like insulin is intended to pass its signal to the nucleus inside a
cell it will pass through the membrane to get to the DNA - Answer-false
When a cell divides and the daughter cell changes (so for instance the inner cell mass
divides and some start to differentiate as part of the future reproductive system) the
DNA gets changed - Answer-false
What does a kinase do? - Answer-Adds a phosphate to another protein
In the absence of cyclin, CDK - Answer-Does not bind target proteins or phosphorylate
anything
What happens to G1/S cyclin before S phase - Answer-It's ubiquitinated
How might a ubiquitin inhibitor affect the cell cycle? - Answer-Proteins inappropriate for
the given phase might continue to be phosphorylated
What does cdk do directly during S phase? - Answer-Phosphorylates proteins leading to
DNA replication
Why is bi-orientation - each sister chromatid attached to a different centrosome so
important? - Answer-It ensures that each cell gets a sister chromatid
You have a template strand of DNA that reads:
5' -ATCGTCGGCC -3'
Pick the correct mRNA that would be transcribed from this template strand DNA -
Answer-5' - GGCCGACGAU - 3'
If the coding strand of DNA has the sequence
5′-CGAGACTTCTGA-3′, what will the sequence of the transcribed mRNA be? - Answer-
5′-CGAGACUUCUGA-3′
with Correct Answers
What type of bond links amino acids into a protein chain - Answer-peptide bond
What are the three components of a nucleotide? - Answer-Sugar, phosphate group,
nitrogenous base
What will determine whether a particular chain of amino acids is hydrophobic or
hydrophilic? - Answer-The R-groups in that part of the peptide
If a hydrophilic signal like insulin is intended to pass its signal to the nucleus inside a
cell it will pass through the membrane to get to the DNA - Answer-false
When a cell divides and the daughter cell changes (so for instance the inner cell mass
divides and some start to differentiate as part of the future reproductive system) the
DNA gets changed - Answer-false
What does a kinase do? - Answer-Adds a phosphate to another protein
In the absence of cyclin, CDK - Answer-Does not bind target proteins or phosphorylate
anything
What happens to G1/S cyclin before S phase - Answer-It's ubiquitinated
How might a ubiquitin inhibitor affect the cell cycle? - Answer-Proteins inappropriate for
the given phase might continue to be phosphorylated
What does cdk do directly during S phase? - Answer-Phosphorylates proteins leading to
DNA replication
Why is bi-orientation - each sister chromatid attached to a different centrosome so
important? - Answer-It ensures that each cell gets a sister chromatid
You have a template strand of DNA that reads:
5' -ATCGTCGGCC -3'
Pick the correct mRNA that would be transcribed from this template strand DNA -
Answer-5' - GGCCGACGAU - 3'
If the coding strand of DNA has the sequence
5′-CGAGACTTCTGA-3′, what will the sequence of the transcribed mRNA be? - Answer-
5′-CGAGACUUCUGA-3′
