Although a certain molecule is involved in a specific reaction, its structure and chemical composition are exactly the same before and after the reaction. This molecule is most likely made of which macromolecule?

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

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.