Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 2IQ
- a. Describe the molecular structure of the plasma membrane.
- b. If a spherical eukaryotic cell has a linear dimension that is 10 times that of a spherical bacterial cell, how much more surface area, proportionally, would the eukaryotic cell have? Proportionally, how much more volume would it have?
- c. What size, shapes, and surface adaptations help provide a sufficiently high ratio of surface area to volume to accommodate the exchange of materials across the plasma membrane?
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Students have asked these similar questions
i.
Why are carbon, nitrogen, oxygen, and hydrogen the most
abundant elements in living matter and, therefore,
considered macronutrients?
ii.
Explain the Fluid Mosaic membrane model of plasma
membrane structure.
iii. What is the difference between simple diffusion, facilitated
diffusion, and active transport?
:=
. what are two structural characteristics of cell membrane determine whether substances can pass through them passively? What determines whether or not a substance can be actively transported through the membrane?
According to the fluid-mosaic model of the plasma membrane, a.protein and phospholipids form a regular, repeating structure. b.the membrane is a rigid structure. c.phospholipids form a double layer, with the polar parts facing each other. d.proteins are free to move within a double layer of phospholipids.
Chapter 6 Solutions
Study Guide for Campbell Biology
Ch. 6 - Prob. 1IQCh. 6 - a. Describe the molecular structure of the plasma...Ch. 6 - How does DNA in the nucleus direct protein...Ch. 6 - Name the components of the endomembrane system...Ch. 6 - Sketch a mitochondrion and a chloroplast and label...Ch. 6 - Why are peroxisomes not considered part of the...Ch. 6 - Fill in the following table to organize what you...Ch. 6 - Sketch two adjacent plant cells and show the...Ch. 6 - Label the indicated structures in this diagram of...Ch. 6 - Prob. 10IQ
Ch. 6 - In the following table, write the organelles or...Ch. 6 - Prob. 2SYKCh. 6 - Label the indicated structures in the following...Ch. 6 - Create a diagram or flowchart in the following...Ch. 6 - Prob. 1TYKCh. 6 - Prob. 2TYKCh. 6 - In an animal cell fractionation procedure, one of...Ch. 6 - You are a linear DNA molecule complexed with...Ch. 6 - The cells of an ant and an elephant are, on...Ch. 6 - Plasma cells are cells of the immune system...Ch. 6 - The pores in the nuclear envelope provide for the...Ch. 6 - A fluorescent green tag is attached to a protein...Ch. 6 - Although lysosomal enzymes are necessary for...Ch. 6 - Prob. 10TYKCh. 6 - Prob. 11TYKCh. 6 - Which of the following is a major component of the...Ch. 6 - Prob. 13TYKCh. 6 - Which of the following characteristics do the...Ch. 6 - Prob. 15TYKCh. 6 - Prob. 16TYKCh. 6 - Glycoproteins and lipoproteins are proteins...Ch. 6 - What would a cell use a desmosome for? a. food b....Ch. 6 - Which of the following is incorrectly paired with...Ch. 6 - In which cells would you expect to find the most...Ch. 6 - Prob. 21TYKCh. 6 - Prob. 22TYKCh. 6 - In which cells would you expect to find the most...
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- Describe the composition of the plasma membrane. Include the general structure of different types of lipids and any asymmetry in their distribution. Include the different classes of membrane proteins and different ways in which proteins are associated with the membrane.arrow_forwardUsing the space below, draw a model (picture, representation) of a cross-section of a cell membrane, including and labeling the following elements: a. Phospholipid bilayer, noting hydrophilic heads and hydrophobic tails b. Cholesterol c. Integral membrane proteins (include 1 glycoprotein and label the carbohydrate) d. Peripheral membrane proteins Describe how integral membrane proteins and peripheral membrane proteins are different in your own words, and include in your description what type of amino acids you might find on these proteins.arrow_forwardIndicate whether the following statements are true or false. If a statement is false, explain why it is false. a. All types of cells contain cell walls, but only some cell types possess plasma membranes. b. The distribution of specific lipids to the inner and outer leaflet is asymmetrical, or biased, in plasma membranes. C. Lateral diffusion is the movement of lipids from one layer of the membrane to the other. d. Fatty acids tails are used to embed integral, transmembrane proteins in the plasma membrane.arrow_forward
- Describe the basic composition and structure of the plasma membrane. Discuss the contribution/function of each structure in the cell membrane, including phospholipids, cholesterol, peripheral proteins, transmembrane proteins, glycoproteins, glycolipids and actin filaments.arrow_forwardWhich of the following describes the fluid mosaic model of the plasma membrane structure? a. The lipid bilayer is solid at body temperature, thus protecting the cell. b. The phospholipid bilayer is embedded with associated proteins, cholesterol and sugars and has a dynamic arrangement. c. The plasma membrane is composed of two layers of proteins embedded with lipids. d. Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chainsarrow_forward1. Movement of molecules through the cell membrane: A). Define the difference between passive transport and active transport, B). Include examples of each. C). For each example specify the type of cell, the name of the membrane protein(s), and the substance that is being transported. 2. Energy and cellular functions: The evolution of the Prokaryotic cell type into the Eukaryotic cell type is about an increase in cell size and complexity. The Chloroplast and the mitochondrion represent important contributors to this process. A). Compare the structure of the Chloroplasts and the Mitochondrion in the evolution of Prokaryotes and Eukaryotes B). How does each contribute to the evolution of and success of the Eukaryote cell type.arrow_forward
- 1a. Describe three types of cytoskeletal filaments. What functions do they serve in the cell? What is a motor protein? Name two motor proteins, and give examples of their cellular roles. 1b. Draw a picture showing the path a secreted protein takes from synthesis until it exits the cell.arrow_forwardMark the following statements about the plasma membrane as true or false. If a statement is false, correct it to make a true statement. a. _____ Integral membrane proteins generally span the width of the plasma membrane, whereas peripheral proteins are found on only one side of the membrane. b. _____ Cholesterol provides the plasma membrane with stability in the face of changing ion concentrations . c. _____ Membrane cholesterol is vitally important for cell-cell recognition. d. _____ Membrane proteins often function as channels or carriers. e. _____ The overall structure of the plasma membrane is a mosaic with the components locked tightly in placearrow_forwardWhich of the following is/are true about the Cellular Membrane Structure: A. All membranes from plants, animals and microorganisms have similar biomolecular ultrastructure but varies in the types of lipids found. B. All membranes examined that have 2 dark-staining layers in the electron microscope indicated the presence of a layer exposed to the outer cell surface and another facing the cytiplasmic layer. C. The plasma membrane of cells are seen as thin, rigid, gel-like structure that is around 5-10nm thick. D. Some membranes have more protein components and some have similar percentage composition as the lipids. A, B, C only B, C, D only A, C, D only A, B, D onlyarrow_forward
- What is unique about plasma membrane? Why is it advantageous for the plasma membrane to be fluid in nature? How does the sodium-potassium pump contribute to the net negative charge of the interior of the cell? In medicine, why is it important to administer only isotonic intravenous solutions to patients? Example of isotonic IV fluids are normal saline and lactated Ringer’s solution. Potassium is a necessary nutrient in order to maintain the function of our cells. What would occur to a person that is deficient in potassium?arrow_forwardWhat is the primary characteristic of peripheral membrane proteins? A: They cannot be post-translationally modified. B: They span the entire lipid bilayer, sometimes multiple times. C: Detergents or nonpolar solvents are necessary to remove them from the lipid bilayer. D:Weak intermolecular forces keep them attached to the lipid membrane.arrow_forwardBiology a. Assuming a protein is present in the cell at 1 µM concentration, how many copies of that protein are present (on average) in a 1 µm3 volume (roughly the volume of a bacterium)? b. What is the corresponding volume per molecule in nm3? c. If the protein were approximately spheres with diameter 5 nm, what fraction of the volume would the protein (still at 1 µM) occupy? d. Repeat part a of this question, but now with concentration 1 nM. e. Repeat part a of this question, but now for a yeast cell (assume yeast cell is a sphere with diameter 5 µm)..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