I authorize Panhellenic to verify my high school and/or college grades, using my Texas Tech Student ID (R Number.) Additionally, I authorize TTU Panhellenic to share my academic information with the sororities at Texas Tech University.
Viruses consist of a small collection of genetic material (DNA or RNA) encased in a protective protein coat called a capsid. (Retroviruses are among the infectious particles that use RNA as their hereditary material.
â¢ The lining of the digestive tract also plays a protective role by safeguarding. surrounding tissues against (1) the corrosive effects of digestive acids and. enzymes; (2) mechanical stresses, such as abrasion; and (3) bacteria that either are. swallowed with food or reside in the digestive tract.