Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 2, Problem 1VC
Summary Introduction
To explain:
Sterols can add “stiffness” to membranes that attach them.
Concept introduction:
Membranes are composed of the lipid bilayer of phospholipids with the polar head group facing towards the outside and non-polar fatty acid groups facing the interior of the cell.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Practitioners of naturopathic medicine often use “essential oils” such as lavender oil. (Note that essential refers to their essence or scent and does not imply that these substances are necessary for health.) One of the components of lavender oil is shown below. Based on its structure, could this molecule diffuse through the cell membrane of a skin cell after the oil was applied to the skin surface?
Suggest a reason why phospholipids are constituents of cellmembranes rather than carboxylic acids.
What could be the reason why hydroxylation of proline residues is critical to the structural integrity of collagen?
Select the correct response
The hydroxyl moities in Pro form disulfide bonds which stabilize collagen structure.
The hydroxyl moities in Pro form ionic bonds (salt bridges) which stabilize collagen structure.
The hydroxyl moities in Pro form hydrophobic interactions which stabilize collagen structure.
The hydroxyl moities in Pro form peptide bonds which stabilize collagen structure.
The hydroxyl moities in Pro form H-bonds which stabilize collagen structure.
Chapter 2 Solutions
Microbiology: A Systems Approach
Ch. 2.1 - Explain the relationship between atoms and...Ch. 2.1 - Prob. 2AYPCh. 2.1 - Prob. 3AYPCh. 2.1 - Prob. 4AYPCh. 2.2 - Prob. 5AYPCh. 2.2 - Provide examples of cell components made from each...Ch. 2.2 - Prob. 7AYPCh. 2.2 - Prob. 8AYPCh. 2.2 - Name the nitrogen bases of DNA and RNA.Ch. 2.2 - Prob. 10AYP
Ch. 2.3 - Recall three characteristics common to all cells.Ch. 2 - The smallest unit of matter with unique...Ch. 2 - The ____ charge of a proton is exactly balanced by...Ch. 2 - Electrons move around the nucleus of an atom in...Ch. 2 - Bonds in which atoms share electrons are defined...Ch. 2 - Prob. 5MCQCh. 2 - Prob. 6MCQCh. 2 - Prob. 7MCQCh. 2 - Prob. 8MCQCh. 2 - DNA is a hereditary molecule that is composed of...Ch. 2 - Prob. 10MCQCh. 2 - Prob. 11TFCh. 2 - Prob. 12TFCh. 2 - Prob. 13TFCh. 2 - Prob. 14TFCh. 2 - Membranes are mainly composed of macromolecules...Ch. 2 - Support or refute the following statement: Double...Ch. 2 - Prob. 2CTQCh. 2 - Plant cell walk are composed of cellulose, a...Ch. 2 - Compare and contrast the kinds of chemical bonding...Ch. 2 - Prob. 5CTQCh. 2 - Prob. 1VCCh. 2 - Prob. 1CM
Knowledge Booster
Learn more about
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
- The compound illustrated below is an antibiotic able to transport the ions across the cell membrane. Considering the structure of the molecule, explain why it is able to carry out this task.arrow_forwardAside from cholesterol, what other chemical components of the cell membrane contributes to its property of being fluid. Explain. NOTE: Please add references from different sources.arrow_forward_______are phospholipids with serine at coe that form rafts that float about within the membranearrow_forward
- Using G-25 Sephadex beads (Fractionation range 1000-5000) KD, a sample of Vitamin B12 (MW ~1500 KD) will be: Fully excluded Partially included Fully included the activity of lysozyme was determined by looking at the increase in light scattering per unit time increase in absorbance per unit time. decrease in absorbance per unit time. increase in concentration per unit time.arrow_forwardLiver cells can detoxify alcohol with two organelles, the _____ and _____.arrow_forwardA cholesterol molecule consists of a polar region (shown in white) and a nonpolar region (shown in blue). The diagrams below show several possible orientations of a cholesterol molecule in a phospholipid bilayer. Which seems most reasonable? Cholesterolarrow_forward
- which portion of phosphatidylinositol molecules contribute to the fluidity of the molecule and polarity of the bilayerarrow_forwardWhich of the following schematics of cell membranes (i-iv) show the correct orientation of cholesterol inserted into the phospholipid bilayer? For each part you did NOT choose, explain what is incorrect about the orientation. i. ii. iii. iv.arrow_forwardThe image below depicts 3 membrane carrier proteins. Describe the different types of membrane carrier proteins (1, 2 and 3) in terms of their direction of transportation. A 1. A B 2 A 3 Barrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license