Asmall child managed to eat a bit of dirt while playing outside. which of the following would prevent the child from getting sick from the bacteria ingested?

a.) if there were not a pathogenic bacteria in the dirt

b) if the child had previously taken antibiotics for that type of bacteria.

c) if the child already had the antibodies to fight the bacteria.

d) if the child’s cells had complementary receptor molecules that bind to the bacteria.

If there were not a pathogenic bacteria in the dirt

Explanation:

i took the test

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

"do a testcross with a homozygous recessive plant."