Urea breath test. A person drinks a liquid containing a low level of radioactive material that is harmless or a nonradioactive material. If H. pylori is present in the person's gastrointestinal tract, the material will be broken down into labeled carbon dioxide gas that is expelled in the breath.
An active worksheet is the worksheet that is currently open. For example, in the picture above, the sheet tabs at the bottom of the window show Sheet1, Sheet2, and Sheet3, with Sheet1 being the active worksheet.The active tab usually has a white background behind the tab name.preadsheet. Alternatively referred to as a worksheet, a spreadsheet is a file made of rows and columns that help sort data, arrange data easily, and calculate numerical data. What makes a spreadsheet software program unique is its ability to calculate values using mathematical formulas and the data in cells.
To make a chart sheet or worksheet the active, or selected, sheet. The sheet that you activate determines which tabs are displayed. To activate a sheet, click the tab for the sheet in the workbook. active cell. The selected cell in which data is entered when you begin typing.