49. MULTIPLE CHOICE 1. ____Rough endoplasmic reticulum has _____attached to it. A. Ribosomes B. Golgi bodies D. Lysosomes C. Chloroplasts A

50. MULTIPLE CHOICE 2. ____All of these are ways to prevent viral infections EXCEPT_______. A. Vaccines B. Good sanitary conditions D. Controlling animals that spread the disease C. Antibiotics C

51. MULTIPLE CHOICE 3. ____When you receive a vaccine, your body produces _______ to help fight the infection. A. Weakened viruses B. Interferons D. Antibiotics C. Golgi bodies B

52. MULTIPLE CHOICE 4. ____A group of cells that work together to do one job is called. A. Organ system B. One celled organism D. Organ C. Tissue C

53. MULTIPLE CHOICE 5. ____Your heart is an example of an____. A. Tissue B. Organ D. Organ system C. Cell B

54. MULTIPLE CHOICE 6. ____Latent viruses do all of these EXCEPT________. A. Destroy the host cell immediately B. Make copies of their hereditary material as the host cell reproduces. D. Insert their hereditary material into the hereditary material of its host. C. Enter a host cell by means of its cell membrane. A

60. SHORT ANSWER 19. Study the diagram below. One is prokaryotic. The other is eukaryotic. Label each cell in the spaces below the diagram. Identify each part with the corresponding letter shown.

61. cell wall cell membrane nucleus eukaryotic prokaryotic hereditary material endoplasmic reticulum ribosomes Golgi body mitochondrion

62. 20. Compare and contrast a latent virus with an active virus A latent virus is inactive and does not immediately destroy its host cell. An active virus does immediately destroy its host cell. A latent virus can become active at any time. answer