5. a scientist is writing an article about the classification of various types of bacteria. which statement is most relevant to the article?
a. bacteria can be grouped according to the environment in which they live.
b. bacteria can be grouped according to their method of reproduction.
c. bacteria can be grouped based on their size.
d. bacteria can be grouped based on their shape.

6. a diagram of a unicellular microscopic organism is shown below.
it is possible to conclude that the organism is most likely eukaryotic because of it
a. has ribosomes
b. has a cell membrane
c. has a flagellum
d. has a golgi apparatus

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