Vibrio alginolycticus is a marine bacterium whose energetics is based on sodium gradients. this microbe grows in an environment containing 0.5 m na+ at ph 5.6. consider if the internal ph of this organism is 7.6, its membrane potential is -120 mv and has a na+/h+ antiport. this bacterium translocates h+ that are used to form 3 atp molecules. in addition, translocation of one mole of the nonmetabolizable and non-toxic leucine analogue, norleucine, against a concentration gradient is energetically coupled to the translocation of one mole of h+. suppose this bacterium is growing in seawater containing 1m norleucine. calculate the following: (20 pts) 1) proton motive force 2) internal norleucine concentration 3) electromotive force 4) phosphorylation potential for the first part, i subtracted the internal ph from the external ph and got delta ph to be +2.0mv. then by using the equation -z*deltaph with z being a constant of 60 i got a value of -120mv. i subtracted that value from the membrane potential and got -240mv for the proton motive force. for the second question, i know that the equation -ndeltap=zlog(sinteral)/(soutside) is used but i'm having trouble figuring this out. i know you'd convert 1 micrometer to moles to make the math easier but i'm still stuck. can someone and explain to me?
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Chemistry, 21.06.2019 15:00
Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.
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Chemistry, 23.06.2019 03:00
Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.
Answers: 1
Vibrio alginolycticus is a marine bacterium whose energetics is based on sodium gradients. this micr...
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