Transporting lactose in against concentration gradient

Assignment Help Biology

Reference no: EM13527126

The lactose permease transporter of E. coli can accumulate lactose inside the cell by transporting lactose in against a concentration gradient, driven by a co-transport process in which the same protein brings protons into the cell from a higher concentration outside to a lower concentration inside.

A. What is the term used to describe the process (a type of active transport) in which one solute is transported against its concentration gradient by co-transport with another solute moving in the favorable direction? _______ active transport

B. If the proton gradient provided a driving force of –10 kJ/mol to support a maximum ?Gt of +10 kJ/mol for the lactose gradient, what would be the maximum lactose gradient (ratio of lactoseinside/lactoseoutside) that the cell could accumulate? Show your calculation.

Reference no: EM13527126

Questions Cloud

Pentose phosphate pathway more active in cells : Why is the pentose phosphate pathway more active in cells that are dividing than in those that are not? Is the difference in concentration of a substance across spaces, such as with powdered drink mix and water.

Confidence interval for the true difference in population : Construct a one-sided 95% confidence interval for the true difference in population means and test the null hypothesis that the population means are identical at the 0.05 level of significance.

What ideal-gas temperature corresponds to a given pressure : A constant-volume gas thermometer reads 50.0 torr at the triple point of water. What ideal-gas temperature corresponds to a pressure of 678 torr

State what implication does the difference have on seabirds : Water is about 15% denser than oil. What implication does this difference have on seabirds and other animals that swim

Transporting lactose in against concentration gradient : The lactose permease transporter of E. coli can accumulate lactose inside the cell by transporting lactose in against a concentration gradient, driven by a co-transport process in which the same protein brings protons into the cell from a higher c..

Compute the molar concentration of the nitric acid solution : 12.50mL of 0.100mol/L NaOH is needed to neutralize 50.00 mL of anitric acid solution.Write a chemical equation for this reaction and calulate the molar concentration of the nitric acid solution

Obtain how high does he go : An Olympic long jumper is capable of jumping 8.5m .Assuming his horizontal speed is 9.5m/s as he leaves the ground, How high does he go

Design the new addressing scheme for the network : Strategy to upgrade the company's current infrastructure to support the new employees and recommend one strategy to create a high-performance network

What is the reciprocal of the linear dispersion : The specifications associated with a commercial spectrophotometer are: Diffraction grating with 600 groves per mm. What is the reciprocal of the linear dispersion

User Account

All Pages