BROOKER BIOLOGY
5th Edition
ISBN: 9781307656152
Author: BROOKER
Publisher: MCG/CREATE
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Chapter 10.2, Problem 2CC
Summary Introduction
To determine: The result to be expected if a rat was fed lanthanum and then a sample of a cell layer in the digestive tract was observed under an electron microscope.
Introduction: In a multicellular organism, cells are linked to each other by specialized structures called cell junctions. Three types of junctions are found between cells in animals namely anchoring junctions, tight junctions and gap junctions.
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5. List three common components of microtubules and microfilaments.
Fish Cell Physiology
Compare and contrast the movement of salt ion in the tissues of a living fish and the tissue of a dead fish, is it similar? What goes in and goes out of the cell? Is it water or salt, discuss in both the living and the dead fish. Discuss what particular part of the cell and the mechanism of this process.
Example Problem: FRAP Data Interpretation
The diffusion rate of four different membrane proteins (A, B, C, and D) was measured using a FRAP
experiment with purified liposomes. The FRAP recovery curves are shown below.
Fluorescence
intensity
ROI
A
3
Time
B
Time
Post-bleaching
imaging
с
Time
D
Time
Pre-bleaching Bleaching
imaging
imaging
(a) Which membrane protein exhibits the higher rate of diffusion in the lipid bilayer? A or B? C or D?
(b) Explain the most likely cause of the difference in the recovery curves for proteins A and C.
Chapter 10 Solutions
BROOKER BIOLOGY
Ch. 10.1 - What are the four functions of the ECM in animals?Ch. 10.1 - Prob. 2CCCh. 10.1 - Prob. 3CCCh. 10.1 - What structural feature of GAGs gives the ECM a...Ch. 10.1 - Prob. 1CSCh. 10.2 - Prob. 1CCCh. 10.2 - Prob. 1CSCh. 10.2 - Prob. 2CCCh. 10.2 - Prob. 1EQCh. 10.2 - Cell Junctions CoreSKILL Explain the experimental...
Ch. 10.2 - Prob. 3EQCh. 10.2 - Prob. 3CCCh. 10.2 - Prob. 2CSCh. 10.3 - Tissues Concept Check: Which of the four general...Ch. 10.3 - Prob. 2CCCh. 10 - The function of the extracellular matrix (ECM) in...Ch. 10 - Prob. 2TYCh. 10 - The polysaccharide that form the hard outer...Ch. 10 - Prob. 4TYCh. 10 - Prob. 5TYCh. 10 - Prob. 6TYCh. 10 - Prob. 7TYCh. 10 - Prob. 8TYCh. 10 - A type of tissue that is rich in ECM or has cells...Ch. 10 - Which of the following is not a correct statement...Ch. 10 - Prob. 1CQCh. 10 - Prob. 2CQCh. 10 - Core Concept: Systems We can view the body of a...Ch. 10 - Discuss the similarities and differences between...Ch. 10 - Discuss the similarities and differences between...
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- Calculate the free energy changes at 20°C for the transmembrane movement of Na and K ions using the conditions presented Figure 9.1. Assume the membrane potential is -70 mV. Use 3 significant figures. AG (Na) - AG (K) = kJ. mol ¹ kJ mol2 Aarrow_forwardExample Problem: FRAP Data Interpretation The diffusion rate of four different membrane proteins (A, B, C, and D) was measured using a FRAP experiment with purified liposomes. The FRAP recovery curves are shown below. Fluorescence intensity ROI A 3 Time Pre-bleaching Bleaching imaging imaging B Time Post-bleaching imaging C Time D Time (a) Which membrane protein exhibits the higher rate of diffusion in the lipid bilayer? A or B? C or D? (b) Explain the most likely cause of the difference in the recovery curves for proteins A and C.arrow_forwardOsmosis and Red Blood Cells Imagine you are working in a research lab studying red blood cells. You prepare 5 mL solutions of salt dissolved in pure water at 0, 0.9, 1.5, and 5% NaCl. You have another solution of red blood cells, and you gently mix it and then add 100 uL of it to each of the three 5 mL solutions. You gently mix and observe a sample of each under the microscope. Results: Red blood cells look intact and normal in the 0.9% solution. In the 1.5% solution cells are present but look shriveled. In the 0 and 5% NaCl solutions, you do not see any cells at all! Exercise #2: Explain the results. Exercise #3: Would you expect to see the same effect as above on plant cells within intact plant tissue? Explain your answer.arrow_forward
- Model 4 - Transport Proteins: Facilitated Diffusion Extracellular Fluid mu Cytoplasmic Fluid Extracellular Fluid wwwwwwy hmmmml Cytoplasmic Fluid www.wmy wwwwwy hummu hmm wwwwwwy immmml wwwwwwwwY immu hmmmml wwwwy hmmmm O wwwwwwy wwwwwwwy imm hmmmmm Y www Y www 10. What appears to be the effect of inserting a protein channel into the membrane on the movement of molecules across the membrane? 11. Is the inner surface (facing the channel) of the embedded protein likely to be polar or nonpolar in the examples shown in Model 4? Is the exterior surface (facing the fatty acid chains of the phospholipids) of the embedded protein likely to be polar or nonpolar? Explain your reasoning. When a membrane protein assists in the passive transport of molecules across a barrier in the direction down their concentration gradient (from high concentration to low concentration) it is called facilitated diffusion. Transport proteins may also be involved in active transport where the cell uses energy from…arrow_forwardOsmosis Practice Activity Osmosis is the diffusion of water from an area of high concentration to an area of low concentration. Only water moves in osmosis! The diagrams below show the concentration of water and salt inside the cell and the concentration of water and salt surrounding the cell. Complete the sentences below by comparing the concentration of the water inside the cell and the concentration outside the cell. 1. a. Water will flow the cell, out of the cell, in both directions). (into 5% NaCl 95% H20 95% NaCI 5% H20 b. The cell will (shrink, burst, stay the same). a. Water will flow (into the cell. 2. 5% NaCl out of the cell, in both directions). 5% NaCl 95% H20 95% H20 b. The cell will (shrink, burst, stay the same).arrow_forwardFrom the image provided. Explain whether any ions can traverse the plasma membrane. If your answer is “yes,” which ions traverse from the extracellular space to the intracellular space and vice versa. Explain your rationale.arrow_forward
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