Microbiology - Test Bank Study Guide Graded A+

Macromolecules that catalyze chemical reactions in the cell are called _________. {Ans: Macromolecules that catalyze chemical reactions in the cell are called *enzymes*}What is the typical length of a bacterium? a) 5 - 10 nm b) 0.5 - 5 µm c) 20 - 40 µm d) 5 - 10 mm e) 20 - 40 mm {Ans: b) The typical length of a bacterium is *0.5 - 5 um*}You have found a novel microbe and wish to classify it at the domain level. The new microbe has RNA pol II-like activity, organelles and a proteinaceous cell wall. Which other features are likely displayed by this microbe? (Select all that apply) a) RNA pol III b) Histones c) Novel lipid linkages d) Single RNA polymerase e) Nuclear membrane {Ans: a, b, e) Other features displayed by a microbe with RNA pol II-like activity, organelles and a proteinaceous cell wall include: *RNA pol III, histones, and nuclear membrane*}Identify the correctly paired peptidoglycan targets and their detroyers: (Select all that apply) a) NAG-NAM linkages and lysozyme b) NAG-NAM linkages and penicillin c) Polyglycine peptide crossbridges and lysostaphin d) Polyglycine peptide crossbridges and penicillin e) Amino acid crossbridges in E. coli peptidoglycan