What is NOT true about facilitated diffusion? O the process often requires energy from ATP net flow proceeds down a concentration gradient O substrate flow is bidirectional O the process is sensitive to inhibitors the substrate diffuses through a protein tunnel

What is NOT true about facilitated diffusion? O the process often requires energy from ATP net flow proceeds down a concentration gradient O substrate flow is bidirectional O the process is sensitive to inhibitors the substrate diffuses through a protein tunnel

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter4: Energy And Metabolism

Section: Chapter Questions

Problem 8SQ

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

Give typing answer with explanation and conclusion

What is NOT true about facilitated diffusion?
the process often requires energy from ATP
net flow proceeds down a concentration gradient
O substrate flow is bidirectional
the process is sensitive to inhibitors
the substrate diffuses through a protein tunnel

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All of these are true with the Sodium Potassium pump except: 1. A type of primary active transport 2. Requires use of carrier proteins 3. Transport process that pumps three sodium ions towards outside the cell and pumps one potassium ion towards inside the cell 4. The process involves splitting ATP into phospate and ADP to liberate high energy phosphate bond of energy
Secondary active transport directly uses ATP for the energy needed to function is a form of diffusion utilizing no energy uses a calcium concentration difference for energy uses an ion concentration difference for energy
In the cell membrane, a bilayer exist wherein hydrophobic ends occupy the outside layer of the micelle O phospholipid hydrocarbon chains (tails) face each other ions freely move in and out of the membrane regardless of concentration gradient diffusion is the only mechanism in which nutrients can go in and out of the cell Enzymes are important because they make biochemical reactions possible they are insoluble in aqueous solution they produce more substrates that are needed in the body they block inhibitors Penicillin works as an antibiotic by A. inducing allosteric inhibition in lipases B. lowering the energy of activation of reactants C. attacking the double bond present in saturated fats D. inhibiting the enzyme that forms cell walls of bacteria O O O O O O O O
How is active transport different from simple diffusion? Both active transport and simple diffusion transport molecules against the concentration gradient. In active transport, molecules are moved down the concentration gradient; on the B contrary, molecules to be transported in simple diffusion are moved against the concentration gradient. In active transport, molecules are transported with the aid of transport proteins; on the © other hand, molecules to be transported in simple diffusion do not need transport proteins. In active transport, molecules that are transported does not need metabolic energy; in contrast, molecules transported in simple diffusion need metabolic energy.
Which of the following statements is correct about passive facilitated diffusion? (select all that apply) V It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient). O It requires a transport protein. O It requires an expenditure of energy by the cell. O It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient). O It involves movement of molecules up a concentration gradient and requires a transport protein.
bindng site da*bin ding, site ATP What type of transport is shown in the figure above? O Active transport O Simple diffusion O Facilitated diffusion
The O O O Na+/K+-ATPase pump performs Facilitated diffusion Simple diffusion Primary active transport
K+ [Select] [Select] A Na+ Primary active transport is being shown by transporter [Select] which uses [Select] ATP [Select] B The transported molecules in this mechanism are being moved [Select] to move Glucose active transport is being shown by transporter [Select] which uses the gradient. Secondary to move against the gradient. When both the molecules move through a transporter in the same direction as in B, this type of transport is called antiport.
Lactose transporter of E. coli is a well-studied proton driven cotransporter. It transports one lactose molecule together with one proton into the cell. Calculate the free energy change for transporting one more of protons into the cell? Membrane potential is -50 mV (inside is negative) and the pH = 7.2 inside the cell and the pH = 4.0 outside the cell. Temperature is 37 degrees celsius (310K). Remeber to convert pH to (H+) and express your answer as kJ/mol.
So I know that Dapagliflozin is a inhibitor of the sodium glucose cotransporter so does Dapagliflozin cause glucose to just stay in the cell or does it cause glucose to exit the cell? Also if does cause glucose to exit the cell is this a passive or active process. I would think that it would be passive since the glucose is going from high to low?? So is it faciliated passive diffusion?? Please help I am not sure if I am on the right track or not I could be totally wrong so please correct me.
Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information, which transport mechanism is most probably functioning in the intestinal cells? exоcytosis simple diffusion O phagocytosis facilitated diffusion active transport pumps
The protein galactoside permease transports sugars like lactose against a concentration gradient by coupling transport with H* which moves with a concentration gradient. This is an example of Simple diffusion Facilitated diffusion Primary active transport Secondary active transport