Which statement best compares a multicellular organism to a single-celled organism? a. a multicellular organism has organ systems that interact to carry out life functions, while a single-celled organism carries out life b. a single-celled organism carries out fewer life functions than each cell of a c. a multicellular organism always obtains energy through a process that is different from that used by a single-celled organism. d. the cell of a single-celled organism is always much larger than an individual cell of a m-cellular organism.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody