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Description: 3 What type of membrane protein provides a hydrophilic corridor for the passage ofspecific molecules?channel proteincarrier proteinproton pumpelectrogenic pump

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What type of membrane protein provides a hydrophilic corridor for the passage of specific molecules? channel protein carrier protein proton pump electrogenic pump

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 1TAHL: Which of the following methods of transport is being used to transfer the substance into the cell in...

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The passive movement of a solute through a membrane protein down its concentration gradient is an example of _________. a. osmosis b. active transport c. endocytosis d. diffusion
Which of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.
A transport protein requires ATP to pump sodium ions across a membrane. This is a case of ______. a. passive transport b. active transport c. facilitated diffusion d. a and c
List the means of unassisted membrane transport.
The principal force driving movement in diffusion is______. a. temperature b. particle size c. concentration gradient d. membrane surface area
Which of the following is a characteristic feature of a ion channel protein in a plasma membrane? It is specific for a certain type of ion. It works against diffusion. It is a peripheral membrane protein.
Passive transport across the membrane mediated by a carrier— would not be saturated by increasing amount of substance to be transported. does not require energy (ATP). can be driven in reverse. moves the solute through the membrane in the “uphill” direction of their concentration gradient. is faster than transport mediated by channel proteins.
In which situation would passive transport not use atransport protein for entry into a cell?a. water flowing into a hypertonic environmentb. glucose being absorbed from the bloodc. an ion flowing into a nerve cell to create anelectrical potentiald. oxygen moving into a cell after oxygen deprivation
Which of the following processes is involved in the bulktransport of molecules out of the cell?a. phagocytosisb. pinocytosisc. receptor-mediated endocytosisd. exocytosise. None of these are correct.
Which of the following integral membrane protein is a special class of membrane rafts?a) Caveolinb) Integrinc) Cadherind) Selectin
Which of the following is/are associated with passive (facilitated) transport? Aquaporin Sodium-Potassium pump Voltage-gated K+ channel Glucose carrier protein Ligand-gated Na+ channel
When the nerves deliver a signal to contract, Ca++ (calcium ions) rush into the cell. The calcium ion influx causes specialized fibers to contract. Afterward, calcium ions are pumped out of the cell by calcium ATPases. What transport type(s) is occuring?s antiporter only ion gated transport followed by active transport active transport only ion gated transport only active transport followed by ion gated transport