Homework Answers
As each enzyme is functional at specific temperature, so enzyme desaturase will not be functional at this temperature and will loss it's activity. As, the deasuturase function at lower temperature, it's fluidity will decreased.
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If you were growing a culture of bacteria at 37°C and decreased the temperature of your...
Membrane's regulation Problem 4 (20 pts) - A culture of bacteria growing at 37°C was shifted...
Membrane's regulation Problem 4 (20 pts) - A culture of bacteria growing at 37°C was shifted to 25°C. How would you expect this shift to alter the fatty acid composition of the membrane phospholipids? Explain. If bacteria were able to synthesize cholesterol, how would you expect this shift to alter their membrane's cholesterol concentration?
in a study of membrane composition, a bacterial culture was grown at 15 degrees Celsius, and...
in a study of membrane composition, a bacterial culture was grown at 15 degrees Celsius, and then the temperature was increased to 37 degrees Celsius for a specific period of time. if these bacteria were considered typical, what would the expected fatty acid composition of the membrane be at each temperature ?
(Bacteria cultured in saturated fatty acids at low temperature vs high temperature) (2) Saturated fatty acid...
(Bacteria cultured in saturated fatty acids at low temperature
vs high temperature)
(2) Saturated fatty acid (6) Cusaturated fatty acid l'almitic acid Linoleic acid 200: Sins Assxiatec Figure 1: Structure of saturated (a) and unsaturated (b) fatty acids (http://www.columbia.edu.cu biology courses/c2005/purves6/figure03-20.jpg) 1. Acholeplasma laidlawii is a bacterium that is unable to synthesize its own fatty acids and must therefore construct its plasma membrane from whatever fatty acids are available in the environment. Thus the A. laidlawii takes on the physical...
.1)a) Why was it important that the –pGLO bacteria were found growing on the LB plate?...
.1)a) Why was it important that the –pGLO bacteria were found growing on the LB plate? Why would their absence create problems in interpreting our results? b) What two conclusions (one per plate) should you draw from the observation that –pGLO bacteria did not grow on the LB/amp plate, but that some +pGLO bacteria did? c). Why did we observe bacteria colonies that glowed under UV light when we inoculated +pGLO bacteria on an LB/amp/ara plate, but not when we...
beyond 37 C, the amount of bubbles produced decreased (see below). How would you explain this?...
beyond 37 C, the amount of bubbles produced decreased (see below). How would you explain this? Bubble Volume (mL) Temperature of Catalase (°C)
You are studying neurons in the lab by growing them in culture (in a petri dish outside the body)
You are studying neurons in the lab by growing them in culture (in a petri dish outside the body). You grow them in an incubator at 37 degrees C. With this experimental setup, you can easily change the extracellular ion concentrations by switching the cell culture medium (the fluid that surrounds the cells).Intracellular concentrationMedium 1 (extracellular concentration)Medium 2 (extracellular concentration)K+140 mM4.5 mM50 mMNa+10 mM135 mM100 mMCl-12 mM125 mM120 mMa.If you switch from Medium 1 to Medium 2, will the intracellular...
Bacteria use DNA methylation as a method to label their DNA, so they can identify foreign...
Bacteria use DNA methylation as a method to label their DNA, so they can identify foreign DNA and degrade it using restriction endonucleases. This DNA methylation is different than that of eukaryotic organisms, in that it adds a methyl group to adenine. This makes the bacterial DNA methylation system a potential antibiotic target. Question 1: (3 marks) Based on what we learned about enzyme activity and regulation, explain what you would expect for the following enzymes: How would this differ...
1. a) If one were to decrease the enzyme concentration by half, how would this affect...
1. a) If one were to decrease the enzyme concentration by half, how would this affect the Vmaxvalue? Explain why this is so. What assumption are we making in regards to the relative amounts of substrate to enzyme? b) Is the turnover rate (kcat value) of an enzyme expected to change if the enzyme concentration was decreased by half? Briefly explain. c) Is the turnover rate (kcat value) of an enzyme expected to change in the presence of a competitive...
What is a gender role? When you were growing up, did your family have strict or...
What is a gender role? When you were growing up, did your family have strict or loose gender roles? Explain your answer using at least three specific examples. How did gender roles affect how your family interacted and functioned? Were your gender roles similar to or different from the gender roles in your community? How did gender roles affect how your community interacted and functioned?
15. -/1 POINTS LARAPCALC10 2.5.070.0/100 Submissions Used The number N of bacteria in a culture after...
15. -/1 POINTS LARAPCALC10 2.5.070.0/100 Submissions Used The number N of bacteria in a culture after t days is modeled by N=600[1-media] Find the rate of change, in bacteria per day, of N with respect to t when the following values are true. (Round your answers to the nearest tenth.) (a) t = 0 O bacteria per day (6) t=1 bacteria per day (c) t = 2 bacteria per day (d) t = 3 bacteria per day (e) [= 4...
Membrane's regulation Problem 4 (20 pts) - A culture of bacteria growing at 37°C was shifted to 25°C. How would you expect this shift to alter the fatty acid composition of the membrane phospholipids? Explain. If bacteria were able to synthesize cholesterol, how would you expect this shift to alter their membrane's cholesterol concentration?
(Bacteria cultured in saturated fatty acids at low temperature
vs high temperature)
(2) Saturated fatty acid (6) Cusaturated fatty acid l'almitic acid Linoleic acid 200: Sins Assxiatec Figure 1: Structure of saturated (a) and unsaturated (b) fatty acids (http://www.columbia.edu.cu biology courses/c2005/purves6/figure03-20.jpg) 1. Acholeplasma laidlawii is a bacterium that is unable to synthesize its own fatty acids and must therefore construct its plasma membrane from whatever fatty acids are available in the environment. Thus the A. laidlawii takes on the physical...
beyond 37 C, the amount of bubbles produced decreased (see below). How would you explain this? Bubble Volume (mL) Temperature of Catalase (°C)
15. -/1 POINTS LARAPCALC10 2.5.070.0/100 Submissions Used The number N of bacteria in a culture after t days is modeled by N=600[1-media] Find the rate of change, in bacteria per day, of N with respect to t when the following values are true. (Round your answers to the nearest tenth.) (a) t = 0 O bacteria per day (6) t=1 bacteria per day (c) t = 2 bacteria per day (d) t = 3 bacteria per day (e) [= 4...
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