Question

part a write the letter of the answer that correctly completes each sentence. 1. _ cause infectious diseases. a pathogens b vaccines c antibodies d minerals 2. the bodys most important defense against infectious diseases is the _ a vaccine b immune system c endocrine system d food guide pyramid 3. protein is _ that cells use to reproduce and repair themselves. a a vaccine b an antibody c a mineral d a nutrient 4. an important habit to help you stay healthy is _ a daily exercise b relieving stress c avoiding drugs d all of the above 5. ___ is a type of germ that is not living. a an antibody b a virus c a pathogen d a phagocyte part b match the terms in column a with the descriptions in column b. write the letter of the correct answer on the line. column a column b 6. plague a main nutrient that the body uses for energy 7. phagocyte b nutrient that forms in the earth 8. antibody c white blood cell that produces antibodies 9. lymphocyte d causes the body to make antibodies against a specific pathogen 10. sanitation e nutrient that is found in foods in small amounts 11. vaccine f white blood cell that surrounds and destroys pathogens 12. carbohydrate g the practice of keeping things clean 13. vitamin h material in the body that fights a specific pathogen 14. bacteria i infectious disease that spreads quickly 15. mineral j a pathogen that causes disease

Explanation:

1. Pathogens are agents that cause infectious diseases. Vaccines prevent diseases, antibodies fight them, and minerals are nutrients.
2. The immune system is the body's main defense against infectious diseases. Vaccines aid it, the endocrine system regulates hormones, and the Food Guide Pyramid is about nutrition.
3. Protein is a nutrient used by cells for reproduction and repair. It's not a vaccine, antibody, or mineral.
4. Daily exercise, stress - relief, and avoiding drugs all contribute to good health.
5. Viruses are germs that are not considered living organisms in the traditional sense. Antibodies are proteins, pathogens can be living, and phagocytes are cells.
6. A plague is an infectious disease that spreads quickly.
7. A phagocyte is a white blood cell that surrounds and destroys pathogens.
8. An antibody is a material in the body that fights a specific pathogen.
9. A lymphocyte is a white blood cell that produces antibodies.
10. Sanitation is the practice of keeping things clean.
11. A vaccine causes the body to make antibodies against a specific pathogen.
12. Carbohydrate is the main nutrient that the body uses for energy.
13. Vitamin is a nutrient found in foods in small amounts.
14. Bacteria are pathogens that cause disease.
15. Mineral is a nutrient that forms in the earth.

Answer:

1. A. Pathogens
2. B. immune system
3. D. a nutrient
4. D. all of the above
5. B. A virus
6. I
7. F
8. H
9. C
10. G
11. D
12. A
13. E
14. J
15. B