Problem : How many tRNA bonding sites are there on a ribosome? Name them.

Three. The acceptor site, the peptidyl site, the exit site.

Problem : Fill in the blanks. Prokaryotic ribosomes have two subunits called _____ and _____. When they associate they form the ___________.

small and large. initiation complex.

Problem : Protein chain growth occurs in what direction (N-terminus to carboxy-terminus or carboxy-terminus to N-terminus)?

Protein synthesis always takes place in the N to C direction.