In biological systems, an ACTIVE transport process is one in which an important chemical component is moved from where it is in concentration, to where it is in concentration. Meanwhile, a PASSIVE transport (or diffusion) process is one in which an important chemical component moves from where it is in concentration to where it is in concentration. A FACILITATED transport process is a form of transport, where an important chemical component moves with the aid of a channel or similar structure. One specific example of a facilitated transport structure in the cell membrane is which aids in the movement of a particular chemical component, namely

In biological systems, an ACTIVE transport process is one in which an important chemical component is moved from where it is in concentration, to where it is in concentration. Meanwhile, a PASSIVE transport (or diffusion) process is one in which an important chemical component moves from where it is in concentration to where it is in concentration. A FACILITATED transport process is a form of transport, where an important chemical component moves with the aid of a channel or similar structure. One specific example of a facilitated transport structure in the cell membrane is which aids in the movement of a particular chemical component, namely

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 6RE

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Similar questions

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.
During an investigation on membrane transport, a researcher exposed bacterial cells to different concentrations of two different solutes: A and B. The rate of transport of each solute into cells isrepresented in the graphSolute ASolute BSolute ConcentrationWhich of the following best explains the greater rate of transport for solute A than for solute B at higher solute concentrations?A Solute A is being transported by simple diffusion, which does not rely on membrane proteins to control the rate of transportSolute A is being transported by active transport, which uses ATP and has higher rates of transport than passive transportSolute A is being transported by facilitated diffusion, which uses membrane proteins to increase the rate of transportRate of Transport
For the following modes of transport for membranes, tell whether the flow is with or against chemical potenial. Meaning +deltaG or -deltag A. Passive Diffusion B.Faciliated Diffusion C.Active Transport
which surface to volume ratio woud be the most efficient for transmembrane transport of substance in cells
The three fundamental classes of proteins involved in transport across membranes are: i) channelsii) pumpsiii) exchangers For each class, describe its essential features, explain how transport is accomplished and name at least one representative example.
The transport of a certain molecule exhibits the following characteristics: (1) The molecule moves down its concentration gradient; (2) at concentrations above a given level, there is no increase in the rate of transport; and (3) cellular energy is not required for transport to occur. Which type of transport process is at work?
As a cell grows its plasma membrane expands. Does this involve endocytosis or exocytosis? ATP is not directly involved in the functioning of a co-transporter. Why, then, is co-transport considered active transport?
Which of the following is true regarding bulk transport? ATP is required to pump molecules against the concentration gradient Bulk transport is an example of passive transport Transport of large quantities of materials ATP changes the shape of a protein channel during active transport
Cells transporting substances across their membranes is essential. Choose TWO of the following types of cellular transport. ๏osmosis ๏active transport ๏facilitated diffusion ๏endocytosis / exocytosis (a)For each type of transport you choose, describe the transport process. Explain how the organization of cell membrane plays a role the movement of specific molecules across membrane. (b)Using the same transport types, identify a specific cell that utilizes that type of transit (i.e. one cell for each transport type, or two different cell examples), and detail a substance that is transferred. (c)A typical human lymphocyte has a radius of about 10 μm, while a typical bacterium (e.g., S. pneumoniae) has a radius of about 1 μm. Assuming that both cell types are perfectly spherical, compare and contrastthe transport mechanisms for each of these cells.
Below are listed molecules with different chemical characteristics. Knowing that all molecules will eventually diffuse across a phospholipid bilayer, select the list that most accurately predicts the relative rates of diffusion of these molecules (fastest to slowest) across a biological membrane. alanine, propanol, sodium, estrogen sodium, propanol, alanine, estrogen estrogen, propanol, sodium, alanine estrogen, propanol, alanine, sodium
Active transport must function continuously because__________.a. plasma membranes wear outb. cells must be in constant motionc. facilitated transport opposes active transportd. diffusion is constantly moving the solutes in the other direction
Gated transport occurs in which of the following pathways? A: from the cytosol to ______? Endoplasmic reticulum or mitochondria or cell nucleus etc?