37 Consider the previous question 36 Which of the following

Last updated: 9/20/2023

37 Consider the previous question 36 Which of the following statements is accurate about this active transport mechanism a It would be an antiporter and it would be electroneutral b It would be a symporter and it would be electroneutral C It would be an antiporter and it would be electrogenic d It would be a symporter and it would be electrogenic 38 Which of the following accurately describes a difference between biofilm formation and endospore formation a Endospores form when nutrient conditions are low biofilms form when nutrients are plentiful b All prokaryotes are capable of endospore formation but only some are able to form biofilms c Gram negative bacteria form endospores Gram positive bacteria form biofilms d Biofilms are a permanent and once an organism enters a biofilm it cannot leave that biofilm endospores are temporary and can germinate resulting in a vegetative cell 39 The generation time for Vibrio natriegenes is 10 minutes What does this indicate a It takes approximately 10 minutes for 1 cell of V natriegenes to divide into 2 cells b It takes approximately 10 minutes for V natriegenes to complete lag phase c It takes approximately 10 minutes for V natriegenes to transition from lag phase into stationary phase d It takes approximately 10 minutes for V natriegenes to complete lag exponential and stationary phase 40 Cyanobacteria are oxygenic phototrophs that can form heterocysts Heterocysts are a specialized type of cell that a generate oxygen during photosynthesis b fix nitrogen utilizing a nitrogenase c protect genomic DNA under unfavorable environmental conditions d fix carbon dioxide into organic carbon 41 A culture of E coli was grown in tryptic soy broth medium a complex medium pH 7 2 at 37 C for 24 hours Melanie is going to transfer the E coli culture to fresh media after the 24 hour incubation period is complete Below are possible media types that Melanie can use when she transfers her culture Which of these media types if any would result in the shortest lag period for this culture a Fresh tryptic soy broth pH 5 0 b Fresh tryptic soy broth pH 7 2 c Fresh minimal media pH 7 2 d The length of lag time is independent of growth conditions so the lag time of E coli would be the same under any condition 42 Which phase of the growth curve would be used to calculate the growth rate of an organism a Lag phase D Exponential phase Stationary phase Death phase