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.
Q: Which of the following is important in active transport of ions in neurons? membrane channels…
A: Active transport is the movement of molecules from a region of low concentration to a region of high…
Q: The movement of a substance against its concentration gradient is always categorized as:…
A: Biological processes are processes that are crucial for all living organism to live and are composed…
Q: During the ion channel transport, some "gates" open and close. This is in response to which of the…
A: Ion channel transport allows the transportation across the cell membrane for selective sized…
Q: What would happen in each of the following cases where something related to intracellular transport…
A: Signal sequences are attached to a newly formed protein . It provides an address to transport them…
Q: Which of these processes can move a solute against its concentration gradient? endocytosis osmosis…
A: Solutes can move form one side of membrane to the another side by two types of transport: active…
Q: One system consists of a permeable membrane with an intracellular concentration greater than the…
A: The cell membrane has an ability to control the flux of ions, amino acids, and gases, through a…
Q: Would it be possible for small ions to passively diffuse (simple diffusion) across a selectively…
A: The plasma membrane is a selectively permeable membrane that regulate the transportation of…
Q: Which of the following is most likely NOT a function of Peripheral Proteins? support for…
A: Introduction - peripheral proteins attached to the surface of the membrane. Attachments of membrane…
Q: Which of the following statements about ion channels is INCORRECT? Like carrier proteins, most…
A: Ion channels are pore-forming membrane proteins that allow ions to pas through the channel pore.
Q: Which of the following does not contribute to the selective permeability of a biological membrane?a.…
A: Introduction:- Selective permiability is a property of cellular membrane that only allows certain…
Q: Which of the following does NOT contribute to the selective permeability of a biological membrane?…
A: Which of the following does NOT contribute to the selective permeability of a biological membrane?
Q: Which of the following active transport mechanisms moves solid particles towards the interior of the…
A: Exocytosis is the active transport mechanisms which include the movement of solid particles towards…
Q: An increase in which of the following would decrease rate of diffusion(flux)? (there can be multiple…
A: Diffusion:- is a movement of particles(could be atoms, ions, molecules, etc) from a higher…
Q: What is Diffusion? Molecules are constantly moving. Collisions between moving molecules cause them…
A: Diffusion is the movement of molecules from a region of high concentration to a region of…
Q: Use of a Transportation Туре Movement of Energy Required Channel? (yes or no) Particles ? (in terms…
A: The movement of particles across a membrane may occur either actively or passively. Passive…
Q: Which out of the following is not a mediated transport?a) Facilitated diffusionb) Primary active…
A: Mediated transport is a kind of transport in which movement of molecules across the membrane…
Q: An ion gate in the plasma membrane that opens or closes when a chemical binds to it is called a/an…
A: The cell is the basic structural and functional unit of life of all living organisms capable of…
Q: Which of the following types of proteins allow materials to move into, or out of, the cell?a.…
A: Proteins are important biomolecules that are necessary for the normal growth and functioning of the…
Q: What type of membrane protein provides a hydrophilic corridor for the passage of specific molecules?…
A: The proteins that are associated with the membrane of a cell or an organelle (in short, a biological…
Q: The movement of glucose across the cell membrane through facilitated diffusion is a form of passive…
A: Membrane transport can be classified into three types: passive diffusion, facilitated diffusion, and…
Q: Which substance on the plasma membrane helps identify chemical signals from outside the cell? O…
A: Cell is a structural and functional unit of living organisms. Several cells joined together to form…
Q: What would happen in each of the following cases where something related to intracellular transport…
A: Peptide has two ends: the end with a free amino group is called the N-terminal amino acid residue.…
Q: Which of the following stimulus or stimuli may cause protein channels involved in membrane transport…
A: A channel protein is special arrangement of amino acids which is embedded in the cell membrane…
Q: Which of the following stimuli could trigger the opening of a voltage-gated channel? O a chemical…
A: The cell membrane has several pores that are the connection of cytosol to the extracellular matrix.…
Q: The electrochemical gradient across the plasma membrane Group of answer choices is caused by more…
A: sodium concentration is more in outside the cell than the inside of the cell. Sodium potassium…
Q: Which of the following molecules can freely diffuse across the membrane? Glucose None of these Water…
A:
Q: The figure below shows the movement of a particular ion across a cellular membrane. + + + + + + + +…
A: In a living cell, the concentration gradient of Na+ tends to drive it into the cell, and the…
Q: Which of the following describe active transport or is an example of transport of a substance across…
A: The basic constituent of the cell membrane is that it is a phospholipid bilayer. The different kinds…
Q: The fluid mosaic model of membrane structure has been very useful in explaining membrane behavior.…
A: Fluid mosaic model explains the structure of cell membrane. It explains the structure of the cell on…
Q: Which properties are characteristic of ion channels?a. They are usually lipids.b. They exist on one…
A: The cells are covered by a plasma membrane which forms a barrier between the cell interior and the…
Q: Which of the following statements is NOT correct about the phospholipid molecules in the plasma…
A: A phospholipid bilayer is made up of two layers of phospholipids in the cell membrane. Each…
Q: Which of the following can be correctly applied to gap junctions? Select all that apply O Allows…
A: * Gap junctions are small channels that connect two adjacent cells and mediates exchange of small…
Q: Why are ion channels necessary to transport ions into or out of a cell? a. Ions are too large to…
A: The answer to the above question is option (b) (b) Ions are charged particles and cannot diffuse…
Q: What type of transport mechanism secretes molecules by fusion of vesicles with the plasma membrane?…
A: Vescicle fusion into the plasma membrane allows secretion of molecules into the extra cellular…
Q: Which of the following is responsible for maintaining the membrane potential? O A. The Ca2+ pump O…
A: Membrane potential is defined as a potential gradient that causes ions to flow passively in one…
Q: A transmembrane protein that can change conformation in response to an lonic charge/current and…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Which of the passive transport processes requires hydrostatic pressure to transport molecules across…
A: Passive transport is a type of transport that does not require energy to move substances across cell…
Q: Glucose enters the cell through a protein called a glucose transporter. It is an example of…
A: Glucose molecules cannot simply diffuse through the membrane but require a transport channel for its…
Q: Which is the proper order of permeability the following solutes would show when it moves across a…
A: Cell membrane is found in both animal and plant cells. It is also called as plasma membrane which…
Q: 13. Osmosis is a special type of diffusion in which the solutes move from the region of higher…
A: 13)Osmosis is the special type of diffusion directed at equalizing the concentration of material on…
Q: A junction that is a protein channel linking the cytoplasms of adjacent cells is called
A: The cell membrane is a biological membrane which separates the cell from its external environment.…
Q: When the membrane is at rest, the concentration gradient tends to draw sodium ions ___ the cell, and…
A: The electrochemical gradient of a cell is caused due to the combined effects of the concentration…
Q: difference between channels and transporters is that O Only channels allow for the passage of…
A: The cell membrane is a biological membrane that separates and protects the interior of all cells…
Q: A transmembrane protein has the following properties: it has two binding sites, one for solute A and…
A: Introduction :- Transmembrane proteins (TP) are integral membrane proteins that traverse the entire…
Q: Which type of membrane transporter requires a gradient to move molecules across the membrane? O…
A: A gradient of electrochemical potential is necessary for an ion movement across the membrane. The…
Q: Select the correct statments regarding transport of molecules across the cell membrane.…
A: Passive transport may or may not require the transporters but it always occurs down the…
Q: which surface to volume ratio woud be the most efficient for transmembrane transport of substance in…
A: The transport of molecules across the cell takes place through transporter proteins like channels,…
Q: A transmembrane protein has the following properties: it has two binding sites, one for solute A and…
A: Introduction :- Conformational changes in single polypeptides are caused by changes in main chain…
Q: Which substance will be transported across a cell's plasma membrane by carrier mediated facilitated…
A: Facilitated diffusion It is defined as the process of passive transport of molecules or ions through…
Q: Transporter are not very selective, and allow solutes to enter or leave the cell through channels or…
A: * Transporters are the integral-membrane proteins which form a pore within the plasma membrane which…
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.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of sodium chloride on side 1 is higher than on side 2. Which of the following ionic movements would occur? a. Na+ would move until its concentration gradient is dissipated (until the concentration of Na+ on side 2 is the same as the concentration of Na+ on side 1). b. Cl- would move down its concentration gradient from side 1 to side 2. c. A membrane potential, negative on side 1, would develop. d. A membrane potential, positive on side 1, would develop. e. None of the preceding is correct.Which of the following is a characteristic of facilitated diffusion (passive transport) of a molecule across a membrane? OOO The rate of transport is saturable. It is highly specific for the molecule being transported. All of the answers are correct. Its rate is higher than that of simple diffusion of the molecule. The direction of transport is determined by concentration and/or electrochemical gradients.Diffusion and osmosis classification Classify the following characteristics based on whether they are describing diffusion, osmosis, or both. Diffusion Results in an Can occur with equal distribution of solute molecules or without a membrane Always involves the movement of water Requires a semi-permeable membrane Osmosis Involves the movement of gases, ions, and small water soluble molecules Passive form of movement that requires no energy Moves from areas of high concentration to low Both Diffusion and Osmosis Responsible for gas exchange in the lungs concentration A 3 of 15 Next > Cation to open the document "Epicinstaller-13.0.0-fortnite-a8e4f12cada646caa706d8be407be69f (3).msi". tv 22
- Which of the following statements about ion channels is INCORRECT? Like carrier proteins, most channel proteins are specific regarding which molecules are allowed to pass. Channel proteins can have open or closed configurations. Unlike carrier proteins, some channel proteins are engaged in active transport of solutes. Channel proteins are used extensively in nerve cells, in which they are responsible for transduction of electrical signals. Compared to carrier proteins, channel proteins allow much faster transport.difference between channels and transporters is that O Only channels allow for the passage of solutes against their electrochemical gradient. OTransporters allow for a greater rate of transport across a membrane than channels do. O Only channels allow for the transport of ions. Transporters must undergo a conformational change upon binding to the solute.The reason ions such as Na+, K+, and Ca2+ diffuse across plasma membranes more rapidly than would be expected across a lipid membrane is that their negative charge causes them to dissolve in the polar lipids in the membrane ions diffuse through polar lipids more readily than non-charged particles do their positive charge causes them to dissolve in the polar lipids in the membrane there are proteins that form channels through which these ions can more readily pass
- Crossing a cell membrane by simple diffusion can be distinguished from facilitated diffusion by which of the following: Select all that apply. Simple diffusion moves molecules down a concentration gradient while facilitated diffusion moves molecules up a concentration gradient Simple diffusion does not require membrane proteins; facilitated diffusion requires specific membrane proteins Simple diffusion does not require energy; facilitated diffusion requires energy Simple diffusion is not saturable; facilitated diffusion rates are limited by the number of functional membrane proteins and can be saturatedSome antibiotics act as carriers that bind an ion on one side of a membrane, diffuse through the membrane, and release the ion on the other side. The graph shows the conductance of a lipid-bilayer membrane with a carrier antibiotic as a function of temperature. Conductance 40 39 38 Temperature (°C) 37 36 What can you conclude about the effect of a carrier antibiotic on the conductance of the lipid-bilayer membrane? A carrier antibiotic decreases the conductance of a lipid bilayer, regardless of temperature. A carrier antibiotic can shuttle ions across a membrane only when the lipid bilayer is quite rigid. A carrier antibiotic increases the conductance of a lipid bilayer, regardless of temperature. O A carrier antibiotic can shuttle ions across a membrane only when the lipid bilayer is highly fluid.Which of the following is important in active transport of ions in neurons? membrane channels membrane pumps membrane enzymes gated-channels
- 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.Which of the following regarding the sodium potassium pump is FALSE? It tends to be found on the apical plasma membrane of polarized cells It transports three sodium ions to the outside of the cell It transports two potassium ions to the inside of the cell. It helps to maintain unequal distribution of ions across the plasma membraneWhich of the following describe active transport or is an example of act transport of a substance across a membrane? Choose all correct answer Glucose transport into intestinal epithelial cells Glucose transport into muscle cells Na* ion pumping out and K* ion pumping into the cell Transport requires a mediator Requires input of energy for transport Movement of ligand against the concentration gradient