A major function of this mucus is to protect against infectious agents such as fungi, bacteria and viruses. The average human body produces about a litre of mucus per day. Bony fish, hagfish, snails, slugs, and some other invertebrates also produce external mucus.n vertebrates, mucus (/mjuËkÉs/ MYOO-kÉss; adjectival form : mucous) is a slippery secretion produced by, and covering, mucous membranes. Mucous fluid is typically produced from cells found in mucous glands.
The basic structure of an IF statement in an Excel formula is: =IF(Condition, Value if condition is true, Value if condition is false). After testing the condition, Excel returns either one of the two supplied values, based on whether the condition evaluated to true or false.ultiple IF Statements. Multiple IF statements let you evaluate a condition that has more than two possible outcomes. To create a multiple IF statement, replace the value returned if the condition is evaluated to false in the first statement by a second IF statement, enclosed in its own set of parentheses.
Instructions. Open an Excel file with existing formulas or create your worksheet with at least one formula. Click in the cell at the end of the formula. For example, click within cell A5. Then type the formula =A2+A3 (without quotes). Go to the Ribbon at the top of Excel and click on Review..Click on New Comment.. A colored text box will appear to the right of cell A5. Start typing your comment after the username that appears.or example, click within cell A5. Then type the formula =A2+A3 (without quotes). Go to the Ribbon at the top of Excel and click on Review.. Click on New Comment.. A colored text box will appear to the right of cell A5. Start typing your comment after the username that appears.