the plant or animal tissue rich in such molecules, considered as a food source supplying essential amino acids to the body. 3. (formerly) a substance thought to be the essential nitrogenous component of all organic bodies. adjective. 4. Biochemistry. of the nature of or containing protein.
The rate, as well as the amount, you pay changes as the amount of income does. You must file a tax return if you had net earnings from self-employment of $400 or more. This is your total self-employment income less the expenses paid in operating your trade or business, multiplied by 92.35%.
Married people that file separate tax returns were required to file if income was $3,700 or higher. Income minimums are slightly higher for people age 65 or older. Single filers 65 and older did not have to file a return if they made less than $10,950.he IRS reports that single dependents under age 65 were required to file tax returns for the 2011 tax season if earned income was more than $5,800 and if unearned income was more than $950.