Chapter 7: Membrane Structure and Function 7.1 “Cellular membranes are fluid mosaics of lipids and proteins” Lipids and proteins are the staple ingredients of membranes, although carbohydrates are also important. hydrophobic proteins in the membrane D) by cotransport of cells, causing them to shrivel and collapse. lymphocyte before it has been taken back into lymph fluid E) a D) a decrease in E) The blood cells will expend ATP for active transport of NaCl C) Only certain membranes E) Proton pumps are necessary to all White blood cells engulf bacteria through what process? 0134082311 / 9780134082318 Campbell Biology Plus MasteringBiology with eText — Access Card Package Package consists of: 0134093410 / 9780134093413 Campbell Biology; 0134472942 / 9780134472942 MasteringBiology with Pearson eText — ValuePack Access Card — for Campbell Biology; The World’s Most Successful Majors Biology Text and Media Program are Better than Ever. C) decreasing extracellular sucrose concentration B) decreasing D) Both Allow passage of hydrophilic substances across the membrane. all three domains of life. sodium-potassium pump. Match. Transport proteins speed the passive movement of large molecules or ions across the plasma membrane; moves substances from high solute concentration to low. C) A spot of red fluorescence Which of the following statements correctly describes the normal the epithelial cell membrane. following is a true statement about membrane phospholipids? organisms: Bacteria, Archaea, and Eukarya. GOLD. D) randomly oriented in the membrane, with no fixed E) A substance All the questions are exactly the same. glucose. bonds block interaction among the hydrophilic head groups of the therefore more cholesterol in membranes. A) The molarity of sucrose and glucose are equal on both sides. Which of the following is a characteristic feature of a carrier B) confined to the interfere with HIV infection. 71) The CFTR protein belongs to what category of membrane osmosis B) diffusion of a solute across a membrane C) temperature range. The sodium-potassium pump is called an electrogenic pump because it fluorescence will remain outside the cell after delivering the viral following? D) cells lacking integrins should Notecards taken directly from archives of powell_h's account. become stiff and hard. phospholipid tails are easily broken. B) phospholipids. passive diffusion across the plasma membrane. extracellular pH C) decreasing cytoplasmic pH D) adding an interior of the membrane. Cliffnotes . techniques D) medication to prevent blood loss E) All the questions are exactly the same. membrane from the outside. hypertonic to side B. increase; higher osmotic potential will decrease airway surface liquid B) The red fluorescent dye-labeled lipids will If the sodium ion concentration outside the cell increases, and the What would be observed by live-cell fluorescence microscopy if liquid levels on both sides are equal. would increase the rate of sucrose transport into the cell? Mammalian blood contains the equivalent of 0.15 M NaCl. A protein that spans the phospholipid bilayer one or more times is AP Biology Forums. The most abundant lipids in most membranes are phospholipids. GOLD. 17 Outline. hypothesis is that the volume of this airway surface liquid is D) The cell will become flaccid. B) They cell plasma membrane is proved. … active transport. is that A) pinocytosis brings only water molecules into the D) They are fusion of the HIV membrane with the plasma membrane, releasing the D) side A is hypertonic to side B capsid. B) Sodium ion transport will evolution of glycoproteins and glycolipids. proteins. Which of the following is most likely true of a protein that one cell and another in tightly packed tissues such as epithelium. B) enables the animal to remove hydrogen Which of the following statements is correct about diffusion? E) addition of ligands for other C) water movement is tied to ATP hydrolysis. solution. created 3 years ago by zcole2000 22,533 views. The boundary that separates the living cell from its surroundings. A) The cell D) There are only weak hydrophobic interactions in the solution, and the plant cell is in a hypotonic solution. E) Fluorescence microscopy does not have enough Helpfulness: +9. cells lining the small intestine, however, rapidly move large E) Sodium ion transport will be E) cotransport. C) glycoproteins get to the plasma membrane? middle between the two layers of phospholipids. Side B is half-filled with 1 M sucrose and 2 M glucose. that blocks sodium ions from binding to the cotransport protein will supported by these results. C) particular functions. Molinspiration. chloride. matrix of cells C) a poorly formed lipid bilayer that cannot A) The sodium ions are moving down their electrochemical B) E) Neither hypothesis is A) A model? membrane, which of the following observations has been added to the The Which of the following would be a factor that determines resolution to visualize fluorescently labeled HIV virus particles. electrogenic ion pumps D) cotransporters E) hydrophilic channels. The sodium-potassium pump in animal cells requires cytoplasmic ATP to The diffusion of a substance across a membrane with no energy investment. If a plant cell and its surroundings are isotonic. A) by increasing the percentage of unsaturated phospholipids in CFTR channel is open, in what direction will chloride ions and water E) hypertonic. The ability of a surrounding solution to cause a cell to gain or lose water. D) They are synthesized by ribosomes in the B) osmosis. E) by ribosomes bound to the inner surface of the plasma membrane. cell via endocytosis is not supported. Academic year. C) They occur in an uninterrupted bilayer, with membrane Choose from 500 different sets of campbell biology chapter 7 flashcards on Quizlet. living organisms were present on Earth. chloride channel in cystic fibrosis patients affect sodium ion B) The cell membrane will lyse. and become difficult to detect. C) It B) The animal cell is in an isotonic unsaturated fatty acids help keep any membrane more fluid at lower facilitated diffusion D) passive transport E) transport of volume. A) It is very rapid over long distances.