The human immune system defence the body from pathogens which of the following are parts of the human immune system? a. skin, lymph nodes, white blood cells, and spleen b. mucous, urine, and kidneys c. skin, neurons , muscle cells and pancreas d. white blood cells and red blood cells

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

Witch type of microscope is used to view very small cell components like proteins and dna?