Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
14th Edition
ISBN: 9781305775480
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 5, Problem 12SQ
Summary Introduction

Introduction: Metabolic pathways require the participation of molecules that must move across membranes and through cells. The plasma membrane is composed of the lipid bilayer. It is nonpolar in nature. Large polar molecules and ions cannot move through the lipid bilayer, but nonpolar molecules and can small polar molecules can move through it by diffusion. For large polar molecules and ions, there is a special protein called transport protein through they cross the lipid bilayer.

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______cannot diffuse across a lipid bilayer. a. Water molecules c. Ions b. Gases d. Nonpolar molecules
cannot diffuse across a lipid bilayer. a. Water molecules b. Gases c. lons d. Nonpolar molecules
Which of the following does not apply to lipid asymmetry? a.It arises in the endoplasmic reticulum. b.It arises due to the flip-flop movement of specific phospholipids to the cytosolic monolayer. c.It is preserved throughout vesicular transport.  d.It depends on the activity of flippase.
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