At what rate must each symporter transport glucose

Assignment Help Biology
Reference no: EM13119467

Here's one experimental approach to finding out how rapidly a membrane transporter can move its solute into the cell: combine biochemical information about how much solute accumulates in the cell over time with structural information about how many transporters are on the surface of the cell. You are studying a spherical eukaryotic cell that has a diameter of 17 ?m and is engaged in glycolysis. Its energy source is glucose, which it is taking up from its environment via Na/glucose symporters distributed throughout the surface of its plasma membrane. By briefly adding an inhibitor of all glucose breakdown, you are able to determine that glucose accumulates in the cell at the rate of 47 ?M/hr.

Based on this number, how many ?moles of glucose must be entering the cell per hour?

(Assume that one-half of the volume of the cell is composed of organelles, and thus not available for diffusion of glucose)

What is the flux of glucose into the cells (flux is expressed in moles per cm2 per sec)?

If electron microscopy indicates that there is on average 1 Na/glucose symporter per ?m2 of the plasma membrane, at what rate must each symporter transport glucose, in molecules per second?

Reference no: EM13119467

Questions Cloud

Write a bad news letter to a customer : Assignment 2.2: Bad News Message - Revised Version , Write a bad news letter to a customer who has requested an exemption to a company's policy. Possible requests that would be subjects of bad news letters include:
Find probability that mean breaking strength is greater : What is the probability that the mean breaking strength of the 3 untreated specimens is at least 25 pounds greater than the mean strength of the 3 treated specimens?
Find out the weight and the angle a needed : The counterbalance w1 weighs 100 N. Find out the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
How many samples of four marbles can be drawn : A bag contains 4 red, 3 white, and 5 blue marbles. How many samples of 4 marbles can be drawn in which two marbles are red and 2 marbles are blue?
At what rate must each symporter transport glucose : (Assume that one-half of the volume of the cell is composed of organelles, and thus not available for diffusion of glucose)
Illustrate what net force is exerted on it : A race car has a mass of 701 kg. It starts from rest and travels 35.0 m in 3.0 s. The car is uniformly accelerated during the entire time. Illustrate what net force is exerted on it?
Discuss possible profit-maximizing business strategies : Use the Porter's five forces framework to explain this pattern. Discuss possible profit-maximizing business strategies that artists, record companies, and retailers may wish to pursue.
What the probability that he answers 3 questions correctly : What is the probability that Cass answers all of the questions correctly? What the probability that he answers 3 questions correctly?
Why moving average forecast model instead of naive model : Which of the following would be a reason to choose a Moving Average Forecast model instead of a Naïve Model to forecast a series of data into the future?

Reviews

Write a Review

Biology Questions & Answers

  How is accuracy different from precision

One blood glucose meter always reads 10 too high. Another meter reads anywhere from 5 to 9 too high. Which one is the more precise? which one is the more accurate? How is accuracy different from precision?

  Effect medication by age

The information presented in Problem seven are analyzed using multiple linear regression analysis and the models are shown here. In the models, the data are coded as 1= new.

  What is her total pulmonary ventilation

Just before a physiology exam her ventilation increases to 18 breaths per minute from nervousness. Now what is her total pulmonary ventilation? Assuming her anatomic dead space is 120 mL, what is her alveolar ventilation in each case?

  What is the structural relationship between these 2 symptoms

Dynein is missing from cilia and flagella of the individual with a specific inherited disorder. These individuals have severe respiratory problems, and if males, are sterile. What is the structural relationship between these 2 symptoms.

  Expenditure of atp molecules

Carbon fixation requires the expenditure of ATP molecules which is generated by A. formation of glucose during the Calvin cycle B. replenishment of chlorophyll C. ETS.

  Annexin v is a protein that binds to phosphatidylserine

Fluorescently labeled annexin V is mixed with each vesicle preparation. The vesicles are washed to remove unbound annexin V and next examined by fluorescence microscopy. Presence of annexin V is detected by green fluorescence, as shown above. What ca..

  What problems might you encounter

You have discovered the gene that encodes an enzyme to dissolve fat. You would like to produce large quantities of this enzyme and harvest it from bacteria. You have isolated the gene and introduced it into bacteria. What problems might you encoun..

  Finding phenotype frequencies expected in f2 generation

The trait for short, stiff hair is recessive to long, furry hair, & purple color is recessive to black color. A purple furry female is crossed to black short hair male.

  Report of current outbreak

Determine a news report of a current outbreak or other health crisis (within a month) then search for a peer-reviewed scientific article on the same or closely related topic

  Criminal investigation

A prison guard states that an inmate threw and unknown liquid on him. This is a felony charge of harassment. In order for this charge to be prosecuted, you must show a bodily fluid was thrown on the guard.

  Define the right order in which procedures are carried out

Cutting DNA with restriction enzyme, hybridizing the DNA with probe, electrophoresis of DNA, blotting the DNA.define the right order in which procedures are carried out.

  Bacterium and skeletal muscle cell

Many bacteria are anaerobic. If bacterium were to produce the same amount of ATP within a minute as a cell extracted from your skeletal muscle, what would that bacterium have to do?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd