Bacteria are prokaryotic cells. simple in structure, they may have both pili and flagella. the flagella are used for movement, but the pili have many functions: adhesion, reproduction, and movement as well. the flagella and pili are similar in that they are both composed of

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Moving down the ramp from 6 meters to

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals