Microbiology& Infection Tcdha Midterm Exam Questions And Answers 100% Accurate

The protein coat surrounding the viral genome is called the A. capsule B. capsid C. matrix D. envelope {Ans: capsid}T or F The Michaelis constant (Km) of an enzyme is the substrate concentration that produces maximum velocity. {Ans: false}Which of the following does not occur in the Kreb's Cycle? a. redox reactions b. production of NADH c. production of FAD+ d. production of CO2 {Ans: c. production of FAD+}Causes disease in plants {Ans: Viroids}Carries the message for a specific protein? {Ans: mRNA}Complex media {Ans: contains some ingredients of unknown composition and/or their concentration}What occurs when a pyruvate molecule proceeds toward and through the Krebs cycle? A. H atom end up in NADH and FADH2, plus 3 carbon dioxides are formed B. Pyruvate converted to heat energy C. Fatty acids are synthesized D. Carbon dioxide combine with acetyl CoA and form oxaloacetate {Ans: A. H atom end up in NADH and FADH2, plus 3 carbon dioxides are formed}What was previously considered the "drug of last resort"? {Ans: Vancomycin}Most acidophiles and alkalophiles maintain an internal pH near ___ {Ans: neutral}What is the plasmid capable of conjugation? (they contain the genes for the pili)