Which of these is most likely to make it difficult to keep up when playing vigorous sports or games? a. poor body composition b. poor flexibility c. poor strength d. poor bone strength

Viruses ) manufacture their own atp, proteins, and nucleic acidsb) use the host cell to copy themselves and make viral proteinsc) use the host cell to copy themselves and then viruses synthesize their own proteinsd) metabolize food and produce their own atp