1. How are ribosomes involved in the development of proteins?
A. They replicate DNA sequences.
B. They store the energy needed to build protein chains.
C. They read a strand of mRNA and assemble amino acid sequences.
D. They ensure the environment around the proteins is free of toxins.

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.