Stanley miller set out to test the hypothesis that the chemicals that harold urey proposed were present in earth's early atmosphere could recombine through chemical reactions to produce organic molecules required for life on this planet. the reactant in stanley miller's experiment would need to form new chemical bonds in order to result in new products being made.

Sammi is studying the interaction of the digestive and circulatory systems in the human body. she has listed various processes that occur in each of the systems. put the processes in order to describe the interaction between these two systems. tiles nutrients diffuse through the villi of the small intestine. digestive processes break nutrients down in the mouth, stomach, and small intestine. blood is pumped through the circulatory system to deliver nutrients to other organs. nutrients are ingested at the mouth. nutrients enter the capillaries of the circulatory system. sequence

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

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?