Biotility Bace practice knowledge exam 2023

cell theory states - All life forms are made from one or more cells. Cells only arise from pre-existing cells. The cell is the smallest form of life. E.coli is an example of a eukaryote - false Quality Assurance - ensure that all products meet standards of quality in manufacturing process reasearch and development (R AND D) - identify candidate biopharmaceutical drugs Manufacturing - make commercial quantities of biopharmaceutical drug Which structure regulates the flow of molecules into and out of the cell? - Plasma Membrane Which bacterial cell component is commonly isolated and used to digest DNA? - Restriction Enzyme polymerase chain reaction ( PCR) - Heat-stable DNA polymerase Digesting DNA - Restriction enzymes ( EcoRI) Running DNA gels - Horizontal gel electrophoresis box Running protein gels ( PAGE) - Vertical gel electrophoresis box Joining pieces of DNA - DNA ligase Spectrophotometer - Measuring protein or DNA concentration A technician reapeated the maltase reaction described above, but the water bath failed to reach 37°C ( it is warmed to 30°C). What is the most likely out come? - The enzyme activity would decrease , yielding the same level of glucose over a longer time period. Reaguarding the out come in question 8 , select the most appropriate action for the technician. - Report the problem to QA or individual in charge of repairs and place an out of service lable on the water bath The byproduct of carbon dioxide benefits the brewing and baking industries. carbon dioxide is produced by microorganisms ,usually yeast, that obtain their energy by: - Anaerobic Respiration Where is the energy in the triphosphate (ATP) ? - Phosphate bonds In a DNA double helix, the two DNA chains are held together by: - Hydrogen bonds between the pair of bases How do the DNA molecules in various species differ from one to another? - The number of genes and non-coding regions. The nucleotide strands of DNA are oriented in opposite directions in a structure that is described as : - Anti-parallel primary (1°) structure - Amino acids linked together by peptide bonds Secondary (2°) structure - 3D polypeptide with alpha-helices and beta-sheets due to hydrogen bonding. Tertiary (3°) structure - Final 3D protein shape Quaternary (4°) structure - Multiple polypeptides forming a larger protein complex Correct order of assembly in the cell: - amino acid, polypeptide, protein