As the body breaks down large molecules into smaller molecules that the cells can absorb, it is exposed to bacteria and viruses on a regular basis.
Which two body systems are interacting to keep you safe from invading
organisms and chemicals?

F. digestive and endocrine

G. endocrine and reproductive

H immune and digestive

J. respiratory and muscular

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. this organism would be classified as which of the following types of organisms? a. fungib. protozoac. bacteriad. archaea

The instructions for making proteins come originally from