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.
This shell is composed of protein organ ized in subunits known as capsomers. capsid -- The protein  shell  of a free virus particle. cell -- Fundamental structural unit of all life. Capsid. The protein layer that encloses the nucleic acid of a phage or virus and protects it from the environment.