BACE Practice Review questions with correct answers

A solvent is the dissolved matter in a solution False The enzyme maltase catalyzes the break down of maltose into glucose. A technician added maltase to a solution of maltose to be incubated at 37°C. Samples were taken from the reaction tube every five minutes over the course of one hour, to measure the glucose concentration. After an hour, the technician noticed the water bath failed to reach 37°C (it only warmed to 25°C). Which of the following is the most likely outcome of the reaction? The enzyme would become inactive, yielding no glucose Circular, long DNA containing several thousand genes Prokaryotic DNA Linear, long pieces of DNA with many thousands of genes, contained within a nucleus Eukaryotic DNA Which of the following serves as the decolorizer in a Gram stain? Alcohol Which of the following is an accurate description of Gram-positive bacteria after Gram staining? Purple, because Gram-positive bacteria have a thick layer of peptidoglycan in the cell membrane. Which of the following is NOT considered a significant advance in PCR methodology? The use of agarose gel electrophoresis to visualize amplified products