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ed 8. Predict what will happen to the cell due to the movement of the water. Becaun

ed 8. Predict what will happen to the cell due to the movement of the water. Becaun

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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000000000 Mesionar where molecules become real™ Phospholipid Activity 3 Continued 90 KLA OXCA SCAN PHOSPHOLIPID & MEMBRANE TRANSPORT KIT 8. Predict what will happen to the cell due to the movement of the water. Instal CORE Remove the water molecules and aquaporin models from the cell model you have constructed. Insert the GLUT carrier protein model into the plasma membrane model. Distribute the glucose molecules so that there are more extracellular glucose molecules than intracellular glucose molecules (right photo). Bo Because the water was moving with its concentration gradient, the cell did not have to expend cellular energy to move water across the plasma membrane in the above cases. Movement of a substance across a membrane without the expenditure of energy is referred to as passive transport. When the cell must expend energy (usually in the form of ATP) to move a substance against its concentration gradient, the process is referred to as active transport. IRIS Transmembrane proteins, proteins that span the cell membrane, can assist in the passive movement of substances across the membrane. Channel proteins, like aquaporin, provide canals through which small molecules or ions can pass. Facilitated diffusion occurs when transmembrane proteins assist molecules and ions in moving across the membrane with their concentration gradient. Carrier Proteins A second kind of facilitated diffusion occurs when a transmembrane protein binds a solute molecule on one side of the membrane, and changes shape (makes a conformational change) to deposit the solute molecule on the other side of the membrane. These transmembrane proteins are called carrier proteins. GLUT is an example of a protein channel frequently found in the plasma membrane of red blood cells that facilitates the movement of glucose across the cell's plasma membrane. juns com GLUT carrier protein embedded in pla membrane
Transcribed Image Text:000000000 Mesionar where molecules become real™ Phospholipid Activity 3 Continued 90 KLA OXCA SCAN PHOSPHOLIPID & MEMBRANE TRANSPORT KIT 8. Predict what will happen to the cell due to the movement of the water. Instal CORE Remove the water molecules and aquaporin models from the cell model you have constructed. Insert the GLUT carrier protein model into the plasma membrane model. Distribute the glucose molecules so that there are more extracellular glucose molecules than intracellular glucose molecules (right photo). Bo Because the water was moving with its concentration gradient, the cell did not have to expend cellular energy to move water across the plasma membrane in the above cases. Movement of a substance across a membrane without the expenditure of energy is referred to as passive transport. When the cell must expend energy (usually in the form of ATP) to move a substance against its concentration gradient, the process is referred to as active transport. IRIS Transmembrane proteins, proteins that span the cell membrane, can assist in the passive movement of substances across the membrane. Channel proteins, like aquaporin, provide canals through which small molecules or ions can pass. Facilitated diffusion occurs when transmembrane proteins assist molecules and ions in moving across the membrane with their concentration gradient. Carrier Proteins A second kind of facilitated diffusion occurs when a transmembrane protein binds a solute molecule on one side of the membrane, and changes shape (makes a conformational change) to deposit the solute molecule on the other side of the membrane. These transmembrane proteins are called carrier proteins. GLUT is an example of a protein channel frequently found in the plasma membrane of red blood cells that facilitates the movement of glucose across the cell's plasma membrane. juns com GLUT carrier protein embedded in pla membrane
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