How many different proteins, each composed of 8 amino acids, can be constructed using the 20 different amino acids found in proteins?

3paragraph about medical terminology

Which term defines male reproductive cellar

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3