latching Question: atch the following statements (designated I-H) that describe various types of transport across biological membranes with the features of the corresponding processes: I. Free unassisted water diffusion through the lipid bilayer of the biomembrane. II. Glucose transport via the glucose transporter in the plasma membrane. II. Pumping of protons across the lysosome membrane by a proton pump similar to the ATP-synthase complex. e that some of the items from the answer list should NOT be used. 1. Only 2 Only i1 Process that requires a dedicated transimembrane transporterichannel Process that occurs down the concentration gradient Process that establishes a concentration gradiont Process that is energy dependent a Only 41 and 5.1 and i 6.Il and i 71 A and iN

latching Question: atch the following statements (designated I-H) that describe various types of transport across biological membranes with the features of the corresponding processes: I. Free unassisted water diffusion through the lipid bilayer of the biomembrane. II. Glucose transport via the glucose transporter in the plasma membrane. II. Pumping of protons across the lysosome membrane by a proton pump similar to the ATP-synthase complex. e that some of the items from the answer list should NOT be used. 1. Only 2 Only i1 Process that requires a dedicated transimembrane transporterichannel Process that occurs down the concentration gradient Process that establishes a concentration gradiont Process that is energy dependent a Only 41 and 5.1 and i 6.Il and i 71 A and iN

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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Integral membrane proteins... Choose all that could apply are bound to the membrane by only interacting with the phospholipid's polar head O contain many amino acids with hydrophobic residues O contain alpha-helical membrane spanning domains O would not be digested by trypsin in a permeabilized cell O interact with the phospholipid core of the phospholipid bilayer
Explain the movement of indirect protein transport; where are the proteins made, where are they going (some examples for each destination). Remember there are soluble and insolubleproteins (membrane bound).
23.Summarize the steps that occur to set up secondary transport (co-transport) and during co-transport. Practice by drawing in circled numbers in the images below to match the steps I have summarized below. [Gluc [Na] low Na high Na ATP 1. Three Na' ions inside the cell move OUT of the cell, across the Na*K* pump, from a low to a high concentration (AGAINST their concentration gradient). This requires the energy of ATP. This sets up the concentration gradient needed in the next step (the next step requires a low Nation concentration INSIDE the cell) 2. Nations in the interstitial fluid = extracellular fluid (fluid surrounding the cell) move INTO the cell, across a co-transport protein. The ions move from a high to a low concentration (DOWN their concentration gradient). This RELEASES energy. This energy is used in the next step. 3. Glucose in the interstitial fluid moves INTO the cell, across a co-transport protein, from a low to a high concentration (AGAINST their concentration…
Q. 1 (i) What is meant by Diffusion as applied in biological membrane. (ii) State three factors that affect diffusion. (iii) Write down mathematical expression of diffusion from Fick’s law.
Part C - Facilitated diffusion via channels and carrier proteins The majority of solutes that diffuse across the plasma membrane cannot move directly through the lipid bilayer. The passive movement of such solutes (down their concentration gradients without the input of cellular energy) requires the presence of specific transport proteins, either channels or carrier proteins. Diffusion through a transport protein in the plasma membrane is called facilitated diffusion. outside cell channel protein inside cell carrier protein' Adapted from Biology by Campbell and Reece ©2008 Pearson Education, Inc. Sort the phrases into the appropriate bins depending on whether they are true only for channels, true only for carrier proteins, or true for both channels and carriers. ▸ View Available Hint(s) only channels transport primarily small polar organic molecules provide a continuous path across the membrane provide a hydrophilic path across the membrane allow water molecules and small ions to flow…
Match 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 O
The formation of a membrane vesicle is a complex choreographed process, however very little energy is required for this event to occur. What is the only step of vesicle formation that requires the input of energy? Explain why the rest of the processes energetically favorable?
Which statements are true? Explain why or why not.1 Although lipid molecules are free to diffuse in theplane of the bilayer, they cannot flip-flop across the bilayerunless enzyme catalysts called phospholipid translocatorsare present in the membrane.2 Whereas all the carbohydrate in the plasma mem-brane faces outward on the external surface of the cell, allthe carbohydrate on internal membranes faces toward thecytosol.3 Although membrane domains with different pro-tein compositions are well known, there are at present noexamples of membrane domains that differ in lipid com-position.
Describe the process of active transport as carried out by ion pumps. Your answer must include a discussion of all concentration gradients (ΔC), whether molecules are moving down and/or against ΔC, and the energy (ATP) requirements for active transport. Explain why energy is required or not required. Lastly, name a known ion pump
Part B → you were dealing with an uncharged molecule rather than an ion, would your answer for part A be higher or lower, assuming all other conditions remained the same? Explain Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used. Submit Provide Feedback, 포 would higher would not lower the same Request Answer The actual value for an uncharged molecule would be the membrane potential 8 be reduced much more because the ATP-driven pumping Reset Help since the internal concentration have to fight
Which statements are true? Explain why or why not.1 Given the numerous processes inside cells thatare regulated by changes in Ca2+ concentration, it seemslikely that Ca2+-dependent cell–cell adhesions are alsoregulated by changes in Ca2+ concentration.2 Tight junctions perform two distinct functions:they seal the space between cells to restrict paracellularflow and they fence off plasma membrane domains toprevent the mixing of apical and basolateral membraneproteins.3 The elasticity of elastin derives from its high con-tent of α helices, which act as molecular springs.4 Integrins can convert mechanical signals intointracellular molecular signals.