BACE Exam preparation questions with correct answers

Which of the following is an example of a product easily found in nature? Antibiotic In a biotechnology lab, tap water is best used for washing glassware The order of amino acids on a polypeptide chain is encoded by mRNA How do DNA molecules vary from one species to another? Number of genes and non-coding regions What is agar? Solid media on which bacteria grow What part of an amino acid differs from one to the other? R group Which of the following is an mRNA codon? ATA UAU Tyrosine All of the above UAU How can colorless proteins be monitored during electrophoresis? PAGE loading dye What is the purpose for SDS during electrophoresis? Denature the proteins and give them a negative charge Which governmental agency regulates biopharmaceutical products for human use? Food and Drug Administration What are the most common molecules in cells? Proteins