Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- Statement 1: The direction of diffusion of a solute across a membrane is determined by its concentration gradient and always moves toward equilibrium. Statement 2: In passive transport, solutes move down the gradient from a region of low concentration to a region of high concentration. A Both statements are true. Both statements are false. C) Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true.arrow_forwardMatch the transport process to the correct description or example. Exocytosis is: Group of answer choices transport of signal molecules out of an endocrine cell transport of a steroid hormone into a cell breaking of a covalent bond to create new molecules making a new covalent bond transport of glucose into a cell, against its concentration gradient transport of glucose out of cell, with its concentration gradient import of an entire bacterium into a white blood cell transport of sodium out of a neuron transport of large macromolecules into a cellarrow_forwardWhich transport mechanism would allow a solute to move from its area of low concentration to its area of high concentration, another words against its concentration gradient? secondary active transport osmosis channel mediated facilitated diffusion carrier mediated facilitated diffusion simple diffusion Aa JO stv A К Proarrow_forward
- How is osmosis different from simple diffusion? osmosis involves the movement of water, simple diffusion involves the movement of solutes simple diffusion utilizes energy in the form of a solute concentration gradient, osmosis utilizes energy in the form of ATP Osimple diffusion moves solutes with their concentration gradient, osmosis moves solutes against their concentration gradient osmosis is a form of active transport, simple diffusion is a form of passive transport Det betalen տներն ոգուarrow_forwardHow is transport across the cell membrane controlled? Diffusion Concentration gradient Permeability What can and can not diffuse through plasma membrane? Factors affecting diffusion: concentration gradient, temperature, molecule size, surface areaarrow_forwardExplain the major difference between diffusion and osmosis. Include in your answer which type of the molecule is moving for each process, in which direction the molecules in question are moving (low to high or high to low concentrations).arrow_forward
- of 15 > Biological membranes are selectively permeable, allowing certain molecules to cross the membrane, but not others. Classify the molecules or ions depending on how they cross a biological membrane. Note that some of these examples may also utilize active transport to traverse a membrane. However, this question is limited to passive transport processes only. lactose Simple Diffusion Mg²+ steroid hormones Answer Bank nucleosides Facilitated Diffusionarrow_forwardWhat is the Description and Examples in the body of these Cell transport? Explain in 2-3 sentencesDescription:Examples in the body: 1. Bulk Transport 2. Phagocytosis 3. Pinocytosis 4. Receptor-Mediated Endocytosisarrow_forwardThe protein galactoside permease transports sugars like lactose against a concentration gradient by coupling transport with H* which moves with a concentration gradient. This is an example of Simple diffusion Facilitated diffusion Primary active transport Secondary active transportarrow_forward
- Which of the following involves the use of protein macromolecules to cross the plasma membrane simple diffusion facilitated passive transport active transport both facilitated and active transportarrow_forwardIf a small part of the cell membrane surrounds a molecule so that it can enter a cell, then the transport method must be Endocytosis Passive diffusion O Facilitated diffusion O Active transport O Osmosisarrow_forward
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