Alex is examining a mollusk. it has filter-like structures for feeding, and it moves using a muscular foot. which mollusk is alex most likely examining? a clam, which is a bivalve a clam, which is a cephalopod a nautilus, which is a cephalopod a nautilus, which is a bivalve

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.