Concept explainers
(a)
Interpretation: The matching of the terms, passive transport, facilitated transport and active transport with the given statement related to membrane transport processes has to be predicted.
Concept introduction: The various types of cellular processes are completed by the transport of different type of molecules across the cell membrane. There are three types of transport processes exists in the cell that helps in the transport of these important molecule through the cell membrane. The three types of transport processes are passive transport, facilitated transport and active transport.
(b)
Interpretation: The matching of the terms, passive transport, facilitated transport and active transport with the given statement related to membrane transport processes has to be predicted.
Concept introduction: The various types of cellular processes are completed by the transport of different type of molecules across the cell membrane. There are three types of transport processes exists in the cell that helps in the transport of these important molecule through the cell membrane. The three types of transport processes are passive transport, facilitated transport and active transport.
(c)
Interpretation: The matching of the terms, passive transport, facilitated transport and active transport with the given statement related to membrane transport processes has to be predicted.
Concept introduction: The various types of cellular processes are completed by the transport of different type of molecules across the cell membrane. There are three types of transport processes exists in the cell that helps in the transport of these important molecule through the cell membrane. The three types of transport processes are passive transport, facilitated transport and active transport.
(d)
Interpretation: The matching of the terms, passive transport, facilitated transport and active transport with the given statement related to membrane transport processes has to be predicted.
Concept introduction: The various types of cellular processes are completed by the transport of different type of molecules across the cell membrane. There are three types of transport processes exists in the cell that helps in the transport of these important molecule through the cell membrane. The three types of transport processes are passive transport, facilitated transport and active transport.
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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Which of the following statements is/are true about transport proteins?I. They carry out biochemical functions that remove nutrients in a cell.II. They are proteins which have high specificity to a single kind of molecule.III. They function to accumulate solutes against the concentration gradient.IV. They are highly regulated in a cell.arrow_forward1) You are studying a transport protein. It appears to bind temporarily to the molecule to be transported. During normal transport, no energy is expended. The addition of a particular molecule that closely resembles the normally transported molecule inhibits transport. An increase in the concentration of the normally transported molecule in the presence of a constant concentration of the inhibitor increases the rate of transport. What kind of transport is described? 2) What are peripheral membrane proteins?arrow_forwardActive transport is different from passive transport because a. no additional energy is required. b. molecules move from low concentration to high concentration. c. ions are involved. d. proteins are involved. e. water is moved across the membrane.arrow_forward
- If the concentration of a solute is the same both inside and outside the cell, what might you expect with regard to its transport by a membrane protein? A. Since there is no concentration gradient, no transport either in or out of the cell is possible. B. The transport protein has been saturated. C. The solute must be phosphorylated with a phosphate group from ATP before further transport can occur. D. Movement of the solute across the membrane could occur and cause accumulated on one side of the membrane by an active transport protein. The concerted model of allosteric regulation is different from the sequential model, because: A. The concerted model is used to explain homotropic effects B. The sequential model is used to explain heterotropic effects C. Both A and B D. Neither A nor Barrow_forwardWhich of the following statements about active processes of membrane transport is true? a. cellular energy is required b. substances move against its concentration gradient c. all requires the aid of proteins during transport d. a and b e. a, b, and carrow_forwardIndicate whether the following statements are true or false. If a statement is false, explain why it is false. a. All types of cells contain cell walls, but only some cell types possess plasma membranes. b. The distribution of specific lipids to the inner and outer leaflet is asymmetrical, or biased, in plasma membranes. C. Lateral diffusion is the movement of lipids from one layer of the membrane to the other. d. Fatty acids tails are used to embed integral, transmembrane proteins in the plasma membrane.arrow_forward
- one reason active transport has a limited maximum transport rate at which it can progress is due to the fact that a. energy required is not available inside the cell b. carrier proteins are not on the surface of the cell membrane c. ion channels are limited in size d. the number of carrier proteins is limited and therefore they can become saturatedarrow_forwardMatch the following statement related to membrane transport processes to the appropriate term or terms: passive transport, facilitated transport, active transport. A transporter (or carrier) protein is necessary. (Select all that apply.) passive transport facilitated transport active transport O Oarrow_forwardDefine the difference between passive transport and active transport, and give examples of each. Each example should specify the type of cell, the name of the membrane protein(s), and the substance that is being transported.arrow_forward
- Given these three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a.The primary active transport prepares the conditions of the membrane gradient by making the extracellular membrane have a less negative charge in the concentration gradient than the intracellular membrane. b. The primary active transport uses ATP while secondary transport helps replenish ATP. c. Both primary and secondary transport moves solutes against their concentration gradients.arrow_forwardCells 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.arrow_forwardWould it be possible for small ions to passively diffuse (simple diffusion) across a selectively permeable membrane? Why? A Yes, because ions are highly non-polar in nature B Yes, because ions are highly polar in nature No, because it needs the aid of transport proteins to cross the membrane No, because not only transport proteins but also metabolic energy from ATP are needed to transport ions across the plasma membranearrow_forward
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