Which shows the correct order of human development, from earliest to latest? -fetus, ovum, zygote, child
-zygote, fetus, ovum, child
-ovum, zygote, fetus, child
-zygote, ovum, fetus, child

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.

Which of these contraceptive methods on its own is least likely to prevent pregnancy ? a. spermicides b. condoms c. surgical sterilization d. oral contraceptives

What is the role of osteocytes, osteoblasts, and osteoclasts in bone repair?