What is a difference between prokaryotic and eukaryotic cells? a. prokaryotic cells do not have a nucleus, but eukaryotic cells do. b. eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do. c. prokaryotic cells always have cell walls, but eukaryotic cells do not. d. organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen