Which is the best definition of a prokaryotic cell? it has a cell wall but lacks a well–defined nucleus and organelles, and its cytoplasm doesn't have much structure.
it contains a membrane–bound nucleus and organelles, and its organelles have specialized duties.
it contains a membrane–bound nucleus, a large central vacuole, a cell wall, a cell membrane, and chloroplasts.

Why does the alligator have one of the strongest bite force and why does it run so fast i need to know i live in florida

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

The type of fossil where the name literally means "turning to stone".