Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 20RQ
Imagine a cell can perform exocytosis, but only minimal endocytosis. What would happen to the cell?
- The cell would secrete all its intracellular proteins
- The plasma membrane would increase in size over time
- The cell would stop expressing integral receptor proteins in its plasma membrane
- The cell would lyse.
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The cytoplasm of a certain cell is composed of a
solution that is 98% water, 2% solutes. Consider the
solution shown in the beaker in this picture:
FOOE
OOS
Foor
solution.
[Select]
Cytoplasm is 98% water,
2% solutes.
The solution in the beaker would be considered
when compared to
[Select]
The plasma membrane is
impermeable to solutes.
Beaker solution
is 98% water,
2% solutes
the cell.
We would expect that the cell would
[Select]
if it was placed in the
would account for
whatever changes might occur to the volume of the
cytoplasm of the cell when it is placed in the solution.
Secretory vesicles (destined for exocytosis) that fuse with the plasma membrane only in an intermittent manner (often requiring an environmental signal) are properly referred to as:
constitutive secretory vesicles (like those that carry lipids, such as phosphatidylcholine)
the v-SNARES
the endosomes
the t-SNARES
regulated secretory vesicles (like those that carry hormones, such as insulin)
Some nutrients and other types of particles can be taken into a cell when the cell's
plasma membrane encloses the particles and pinches off, forming a free-floating
vesicle inside the cell. A lysosome containing digestive enzymes then fuses with the
vesicle. Which term best classifies the uptake of such particles by the cell?
Simple diffusion
OEndocytosis
O Exocytosis
Facilitated diffusion
Chapter 5 Solutions
Biology 2e
Ch. 5 - Figure 5.12 A doctor injects a patient with what...Ch. 5 - Figure 5.16 Injecting a potassium solution into a...Ch. 5 - Figure 5.19 If the pH outside the cell decreases,...Ch. 5 - Which plasma membrane component can be either...Ch. 5 - Which characteristic of a phospholipid contributes...Ch. 5 - What is the primary function of carbohydrates...Ch. 5 - A scientist compares the plasma membrane...Ch. 5 - Water moves via osmosis. throughout the cytoplasm...Ch. 5 - The principal force driving movement in diffusion...Ch. 5 - What problem is faced by organisms that live in...
Ch. 5 - In which situation would passive transport not use...Ch. 5 - Active transport must function continuously...Ch. 5 - How does the sodium-potassium pump make the...Ch. 5 - What is the combination of an electrical gradient...Ch. 5 - What happens to the membrane of a vesicle after...Ch. 5 - Which transport mechanism can bring whole cells...Ch. 5 - In what important way does receptor-mediated...Ch. 5 - Many viruses enter host cells through receptor-...Ch. 5 - Which of the following organelles relies on...Ch. 5 - Imagine a cell can perform exocytosis, but only...Ch. 5 - Why is it advantageous for the cell membrane to be...Ch. 5 - Why do phospholipids rend to spontaneously orient...Ch. 5 - How can a cell use an extracellular peripheral...Ch. 5 - Discuss why the following affect the rate of...Ch. 5 - Why does water move through a membrane?Ch. 5 - Both of the regular intravenous solutions...Ch. 5 - Describe two ways that decreasing temperature...Ch. 5 - A cell develops a mutation in its potassium...Ch. 5 - Where does the cell get energy for active...Ch. 5 - How does the sodium-potassium pump contribute to...Ch. 5 - Glucose from digested food enters intestinal...Ch. 5 - The sodium/calcium exchanger (NCX) transports...Ch. 5 - Why is it important that there are different types...Ch. 5 - Why do ions have a difficult time getting through...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.arrow_forwardWhy is it advantageous for the cell membrane to be fluid in nature?arrow_forwardExocytosis Exocytosis (below) is an active transport process in which a secretory vesicle fuses with the plasma membrane and expels its contents into the extracellular space. In multicellular organisms, various types of cells (e.g. endocrine cells and nerve cells) are specialized to manufacture products, such as proteins, and then export them from the cell to elsewhere in the body or outside it. (DID YOU KNOW? The contents of the Exocytosis (and its counterpart endocytosis) require energy because they involve maverment of cytoskeletal proteins. vesicle are expelled into the extracellular space. Plasma membrane Vesicle fuses with the plasma membrane. Vesicle from the Golgi carrying molecules for export moves to the perimeter of the cell. From Golgi apparatus Nerve cell NT Golgi apparatus forming vesicles Nerve cell The transport of Golgi vesicles to the edge of the cell and their expulsion from the cell occurs through the activity of the cyloskeleton. This requires energy (ATP).…arrow_forward
- What kind of transport mechanism in cells involves ligands binding to specific receptor proteins on the surface of the plasma membrane that triggers vesicle formation? A facilitated diffusion B pinocytosis receptor-mediated endocytosis simple diffusionarrow_forwardCompare and contrast the following methods of a passing cell membrane in terms of movement with respect to the concentration gradient, use of ATP, and the use of transporters with examples. (Simple) Diffusion Facilitated Diffusion/Passive Transport Osmosis Active Transport Exocytosis Endocytosis (with its 3 subforms)arrow_forwardA cell that is missing this structure would not have a rigid structural support outside of its plasma membrane and would not be protected from exploding when placed in water. Name the structure and tell why. Then state which type of cell(s) have this structure.arrow_forward
- Fill in the blanks with the following words: diffusion, endocytosis, solute pump, osmosis. The type of active transport in which sodium and potassium are pumped across a membrane using ATP is called a This passive process is where water moves in and out of a cell The type of passive process in which molecules move across the plasma membrane down a concentration gradient is called This process is where the cell engulfs extracellular substances by phagocytosis or pinocytosisarrow_forwardWhich of the following requires a specific interaction with the molecules or substance it is going to take into the cell? fluid-phase endocytosis transcytosis PRE pinocytosis phagocytosis receptor-mediated endocytosisarrow_forwardCompare and contrast the four basically different ways that a substance can move across the plasma membrane. Present it in a matrix.arrow_forward
- Students set up an experiment in which they filled dialysis tubing with a 3% starch solution. They tied off the ends of the tubing and placed it in a beaker filled with distilled water and 1% iodine for 3 hours as shown in the diagram. 3% starch solution 1% lodine solution Since dialysis tubing is semi-permeable like the plasma membrane, the bag of white starch solution was bluish- black the next day. What is the best explanation for the results? (1D) O The starch solution diffused into the beaker because the concentration of water is greater in the starch solution than in the iodine solution. The iodine solution diffused into the bag because the concentration of water is greater in the starch solution than in the iodine solution. O The lodine solution diffused into the bag because the concentration of water is greater in the iodine solution than in the starch solution. O The starch solution diffused into the beaker because the concentration of water is greater in the iodine solution…arrow_forwardWhich of the following are involved in receptor-mediated endocytosis? Choose all that apply. There are 2 correct answers. You will LOSE points (from the total correct) for incorrect answers. This is to discourage guessing. clathrin dynamin COPII ARF COPI phagosomearrow_forwardSecretory vesicles fuse with the cell membrane to release their contents to the outside of the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane because small pieces of the membrane are continually added to the cell membrane, one would expect the cell membrane to become larger and larger as secretion continues. The cell membrane stays the same size, however. Explain how this happens.arrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license