Jack runs a company and is constantly under pressure. when he went to the doctor recently he was advised to engage in aerobic exercise that would make his heart pump faster and therefore function more efficiently. which disease was he most likely diagnosed with?

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.