The body's first line of defense against pathogens includes a) antibodies b) memory cells c) t cells d) wax in the ears

According to your text, the best way to reduce the number of germs is by ventilating spaces and a. cleaning all toys, books, and materials every day. b. keeping all potentially sick individuals out of the center. c. minimizing strenuous physical activity among the children. d. cleaning, sanitizing, and disinfecting surfaces and materials.

Which of the following statements is true about body composition? a. body composition is the percentage of fat to lean body mass. b. body composition is a measure of one's body weight. c. body composition is a measure of one's essential body fat. d. body composition is not a good indicator of overall health. select the best answer from the choices provided. a

Which of the following is characteristic of the lytic cycle? a) viral dna is incorporated into the host genome.b) the viral genome replicates without destroying the host.c) a large number of phages are released at a time.d) the virus—host relationship usually lasts for generations.