Microbiology Exam 1 (Chapters 1,3,4) Questions with 100% Correct Answers

Microbiology Exam 1 (Chapters 1,3,4) Questions with 100% Correct Answers Nucleic acids - Answer-chains of nucleotide monomers linked together function- direct cell metabolism and reproduction- also ATP Taxonomy - Answer-the science of classifying living beings What are the two classification systems used to classify bacteria? How are they different from each other? - Answer-1) culturing methods 2) rRNA for genetic sequencing Phylogeny - Answer-degree of relatedness between groups of living things based on the process of evolution and how far they have evolved from a common ancestor How can we observe bacteria for their morphology (macroscopic appearance or cells (microscopic)), arrangement/patterns and biological characteristics? - Answer-macroscopically- look at shape of colony, variations in arrangement, growth characteristics, habitat Explain the difference between a bright-field (Light) microscope and electron microscope. - Answer-Light microscope- used to observe intact cells; 2-D; illumination source is white light Electron microscope- used to observe internal structures; 3-D; illumination source is electron beam;