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The correct answer is (b) it exhibits a specificity for a particular type of molecule. Carrier proteins move molecules across the cell membrane.Each carrier protein has a specific role. The sequence of the chains of amino acids defines the specific shape and function of the protein. Each carrier protein accepts only one molecule. The molecule is attached to the carrier protein, and the carrier changes shape moving the molecule into the cell.Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot. Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly.
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What are the characteristics of carrier protein?
Each carrier protein has a specific role. The sequence of the chains of amino acids defines the specific shape and function of the protein. Each carrier protein accepts only one molecule. The molecule is attached to the carrier protein, and the carrier changes shape moving the molecule into the cell.
Which of the following is a characteristic of a cells plasma membrane?
Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot. Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly.
Transport Proteins: Pumps, Channels, Carriers
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What characteristic about the plasma membrane allows for cellular transport?
Selective Permeability
Cell membranes only allow some molecules through. This characteristic is why cell membranes are selectively permeable. They are not impermeable (not letting anything pass) nor are they freely permeable (letting everything can pass). This quality allows a cell to control what enters and exits it.
Which of the following best describes a characteristic of the cell membrane?
The correct answer is (C) A flexible lipid double layer. The cell membrane is often referred to as a “fluid mosaic,” a flexible structure…
Which of the following is the characteristic of carrier?
The correct answer is (b) it exhibits a specificity for a particular type of molecule. Carrier proteins move molecules across the cell membrane.
What is the role of carrier proteins in the plasma membrane?
Carrier proteins are membrane transport proteins along with the channel proteins. As membrane transport proteins, they are located in biological membranes and their primary function is to move molecules from one site to another.
Which of the following is characteristic of the plasma membrane quizlet?
Plasma membrane is an amphipathic, which contains both hydrophilic heads and hydrophobic tails. 4.It is a fluid mosaic of lipids, proteins and carbohydrate.
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Carrier Proteins and Active Membrane Transport – NCBI
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Carrier protein – Definition and Examples – Biology Online
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Which of the following is a characteristic feature of – Course Hero
Water being a charged small molecule passes through the lipid bilayer slowly by diffusion and is slightly permeable. Hence, it requires special integral …
Which of the following are functions and characteristics of plasma membrane?
The main function of the plasma membrane is to protect the cell from its surrounding environment. It is semi-permeable and regulates the materials that enter and exit the cell. The cells of all living things have plasma membranes.
Which of the following are characteristics of plasma cells quizlet?
Which of the following is(are) characteristic of a plasma cell? It secretes identical antibodies all directed at a single unique epitope.
Which of the following properties will allow a substance to pass through a cell membrane by simple diffusion?
Which properties must a substance have in order to pass through a cell membrane by simple diffusion? It must be small and/or lipophilic.
What type of molecules pass through the membrane via carrier proteins?
Carrier proteins are responsible for the facilitated diffusion of sugars, amino acids, and nucleosides across the plasma membranes of most cells.
Why do proteins not pass through plasma membranes?
Researchers have known how small molecules penetrate cell membranes, typically by binding to the membrane and then diffusing through it. But they knew that proteins do not have that ability because they are too big.
Cell Transport
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Which of the following is true about the plasma membrane?
It is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells apart from cell-cell recognition. It has a host of important properties which include, fluidity, compartmentalization, transport, signaling etc. Thus, the correct answer is option D.
What is one general feature of the plasma membrane?
The plasma membrane consists of a lipid bilayer that is semipermeable. The plasma membrane regulates the transport of materials entering and exiting the cell.
Which of the following describes the plasma membrane?
The right answer to this question is C) The plasma membrane is a phospholipid bilayer surrounding the cell.
What do carrier proteins do?
Carrier proteins bind specific solutes and transfer them across the lipid bilayer by undergoing conformational changes that expose the solute-binding site sequentially on one side of the membrane and then on the other.
Which of the following statements describes a characteristic feature of a carrier protein providing facilitated diffusion across the plasma membrane?
Which of the following statements describes a characteristic feature of a carrier protein in a plasma membrane? It exhibits specificity for a particular type of molecule.
What are the three characteristics of carrier mediated transport?
Carrier-mediated transport exhibits the properties of specificity, competition, and saturation.
What function do the carrier proteins embedded in the cell membrane serve quizlet?
carrier proteins use energy to move molecules down their concentration gradient into the cell. 4. carrier proteins are one-way, allowing molecules into the cell but not out.
Which of the following explains how carrier proteins function in transporting molecules across the membrane of the cell during facilitated diffusion?
Which of the following explains how carrier proteins function in transporting molecules across the membrane of the cell during facilitated diffusion? They change shape to move molecules in or out of the cell.
Do all carrier proteins use ATP?
But the carrier protein does not use ATP directly. Other carrier proteins, such as some that are found in bacteria and in organelles such as mitochondria and chloroplasts, might use energy sources directly from the environment without requiring ATP.
Which of the following lists describe the main components of the plasma membrane?
The principal components of a plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrates attached to some of the lipids and some of the proteins.
MEMBRANE PROTEINS – Types and Functions
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Which one of the following is not a function of the plasma membrane The plasma membrane?
Answer and Explanation: Among the given options, the one that is not a function of the plasma membrane is d. the control center of the cell.
Which of the following is not a function of plasma membrane proteins?
Answer and Explanation: C. Act as carrier molecules for various solutes is not a function of membrane proteins.
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