Biochemistry Answers

Briefly describe how eukaryotic mRNAs are modifie

Define the terms “downstream” and “upstream” in the context of DNA sequences

Describe the three stages of transcription process in eukaryotic cells.

Classify enzymes based on the type of reactions they catalyse

Describe how genetic information is expressed as proteins. In you answer, describe DNA replication, transcription and translation.

Draw the structure of two pyrimidine nitrogenous bases found in DNA

Explain what a zymogen is, and why they are produced in this form.

Discuss the principles of ion exchange, affinity and gel exclusion chromatography

Describe two diseases related to perturbation of protein conformation and two diseases related to haemoglobin.

Draw the structure of the tripeptide Ala-Met-Gln in the ionic form that predominates at pH 7. Show all atoms (including hydrogens) as well as any charges as necessary.