Traits are passed down from parents to offspring via genes (dna) in a process called heredity.

Ngeneral, the outside and sleeves of the isolation gown and outside front of the goggles, mask, respirator and face shield are considered "contaminated," regardless of whether there is visible soil.

When children are young and go to the doctor, the doctor will give them booster shots. this re-exposes the children to a dead portion of a disease to them build immunity.

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.