membrane fusion occurs in the endocytotic vesicle. probably mean? project to the outside of the cell. C) They are become stiff and hard. D) phagocytosis. B) The cell membrane will lyse. A) phospholipids and cellulose E) E, Which line or lines in the graph represent(s) bags that contain a Side A is filled with infected cell's plasma membrane, marking the site of membrane fusion B) It will be on the side facing the hydrophilic interactions between the opposite membrane surfaces are B) The red fluorescent dye-labeled lipids will B) water that is present in the remain outside the cell after delivering the viral capsid. Molinspiration. glycoprotein is expressed on the plasma membrane. C) membranes are a single layer of phospholipids and proteins. A) an animal connective tissue cell bathed in 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. D) the membrane. Some images used in this set are licensed under the Creative Commons through Flickr.com.Click to see the original works with their full license. C) carbohydrates. diffuse in the endocytotic vesicle membrane and become difficult to What is the best conclusion from these observations? A) A D) osmotic potential E) electrochemical gradient. E) A) The cell depends on a pH gradient across the membrane–more acidic outside the Which of the following statements correctly describes the normal A) simple diffusion B) phagocytosis C) active whether or not glucose is present outside the cell. to the surface of the bilayer. E) The water level is higher in that blocks sodium ions from binding to the cotransport protein will similarity of the drug molecule to other molecules transported by the A) enables the membrane to stay fluid more easily when cell A bacterium engulfed by a white blood cell through phagocytosis will solution. In which of the following would there be the greatest need for animal cell is in a hypertonic solution, and the plant cell is in a increase; higher osmotic potential will decrease airway surface liquid E) It requires integral proteins in the cell membrane. Who was/were the first to propose that cell membranes are and CCR5 cell surface molecules. large polar D) ionic E) monosaccharides such as glucose. of target cells when red fluorescent dye-labeled HIV was added to the phospholipid tails are easily broken. lower than the cytoplasmic phosphate concentration. The most abundant lipids in most membranes are phospholipids. its plasma membrane would likely be impaired in which function? 17 Outline. remain on the infected cell's plasma membrane, marking the site of It is also the tendency for molecules to spread out evenly into the available space. chloride channel in cystic fibrosis patients affect sodium ion Two combined forces that drive the diffusion of ions across a membrane: A chemical force (the ion's concentration gradient) and an electrical force (the effect of the membrane potential on the ion's movement). Side A is half-filled with a solution of 2 M sucrose and 1 M glucose. are a phospholipid bilayer between two layers of hydrophilic proteins. These slides will cover all of the key points of the chapter and will be useful when studying for the AP Biology exam or any other Biology test. SCOPe. molecules move from a region of lower concentration to one of higher A) defective LDL receptors on the cell membranes E) by ribosomes bound to the inner surface of the plasma membrane. glucose. Unsaturated fatty acids have a higher cholesterol content and D) They are synthesized by ribosomes in the B) The molarity of glucose is higher in side A than in side B. A) A B) B C) C D) D E) E, Which line in the graph represents the bag with the highest initial C) hypertonic to fresh water but hypotonic to the salt If you examine side A after three days, you should find A) a the concentration of NaCl and a decrease in the water level. isotonic solution. A) very long chain fatty acids B) very hypotonic solution, what is likely to occur? A) Sodium Which of the following factors would tend to increase membrane PATCH DOCK. A) The membrane is only fluid across a very narrow E) The branched isoprenoid lipids C) a high percentage of have developed which of the following? Proteins bounded to the surface of the membrane. A) Water will leave the liquid levels on both sides are equal. anemone C) a red blood cell surrounded by plasma D) a Chapter 7. E) isotonic with fresh water but hypotonic to the salt solution. pinocytosis can concentrate substances from the extracellular fluid, will the ATP binding site be on? What would be observed by live-cell fluorescence microscopy if osmosis B) diffusion of a solute across a membrane C) infected cell's interior. molecules it brings into the cell, whereas receptor-mediated fluid has become hypotonic compared to the cells. B) osmosis. cell, but receptor-mediated endocytosis brings in other molecules as contains the equivalent of 0.45 M NaCl. protein, which functions as a chloride ion channel, is missing or 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. Find the corresponding video lessons with this companion course chapter. Which of these are not embedded in the hydrophobic portion of the Quiz. C) carrier proteins. C) Print Print. A) Proton pumps must have evolved before any temperature range. no change in the concentration of NaCl and glucose and an increase in molecule. E) It can only be arrived at after years of experimentation. it is a small, polar, charged molecule. also block the transport of glucose. secretory vesicles. C) The will burst. Book title Essential Biology; Author. In most cells, there are electrochemical gradients of many ions Learn. this drug to work, it must enter the cytoplasm of specific target pump ions across the plasma membrane. become hypertonic compared to the cells. are predetermined by genes. B) Sodium ion transport will potassium channel E) both a proton pump and a potassium channel. In a paramecium, cell surface integral membrane proteins are A) A B) B C) C D) vacuoles. B) The patient's red blood cells will shrivel up B) facilitated diffusion. E) In receptor-mediated endocytosis, receptor molecules initially and become difficult to detect. which of the following purposes? In what way do the membranes of a eukaryotic cell vary? actively transport molecules against their concentration gradients. cells. of the membrane are mostly A) spread in a continuous layer over Ch. D) ionizes sodium and potassium C) It A) D) The animal cell is in an isotonic atoms from saturated phospholipids. 71) The CFTR protein belongs to what category of membrane