Cilia are thin hairlike structures, flagella are long tail like structures, pseudopods are feetlike projections, and pilli are used to hold onto rocks
The answer is operon. These set of genes are transcribed together because they share a single promoter and operator. Therefore they are transcribed into one mRNA and translated together. These genes are, therefore, expressed together at all times. Examples are the tryptophan and lac operons of Escherichia coli
<span>By filtering the air so that the lungs so the lungs don't get infected</span>
