Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Chapter 3, Problem 7MC
Summary Introduction
Introduction:
Lipids do not serve as the major short-term energy source for organisms.
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Which of the following is not a function of lipids?
A. They catalyze reactions and reduces activation energy
B. Main component of the cell membrane
C.Used in cooking and as alternative fuel sources
D. Long term energy storage
Identify which lipids are important components of the cellular membrane. SELECT ALL THAT APPLY
A. Phospholipids
B. Bile Salts
C. Fatty Acids
D. Cholesterol
The major lipid components of cell membranes are:
OA. sphingolipids
O B. prostaglandins
O c. phosphoglycerides
D. terpenoids
34
Chapter 3 Solutions
Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
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- Which statement is NOT correct concerning the cell membrane? 1. The fatty acid hydrophobic "tails" are contained within what becomes a double- layered molecule. 2. This molecule provides an impermeable barrier for the cell from the watery outer environment. 3. The overall structure of the cell membrane results from the amphiphilic phospholipid molecules. 4. Because of the hydrophilic property of the phosphate containing "head", this "head* orients itself toward the "watery." cytoplasm and the extracellular fluid.arrow_forwardWhich of the following is incorrect regarding phospholipids?a. The heads are polar.b. The tails are nonpolar.c. They contain a phosphate group in place of one fatty acid.d. They are energy-storage molecules in the cell.arrow_forwardPhospholipids are important components of_______. a. the plasma membrane of cells b. the ring structure of steroids c. the waxy covering on leaves d. the double bond in hydrocarbon chainsarrow_forward
- Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECMarrow_forwardThe ff. are phospholipids, except: OA. plasmalogen O B. lecithin O c. cephalin O D. choline 28arrow_forwardWhich of the following fatty acids, if incorporated into a typical eukaryotic membrane phospholipid, would be the most likely to decrease that membrane’s fluidity? A. linolenic acid, with 18 carbons and three carbon-to-carbon double bonds B. linoleic acid, with 18 carbons and two carbon-to-carbon double bonds C. oleic acid, with 18 carbons and one carbon-to-carbon double bond D. stearic acid, with 18 carbons and no carbon-to-carbon double bonds E. all of the above molecules are saturated, and equally likely to decrease membrane fluidityarrow_forward
- Positively charged molecules are often more easily endocytosed by cells than negatively charged molecules. Which of these BEST explains this observation? A. The hydrocarbon tails of membrane lipids are hydrophilic. B. The hydrocarbon tails of membrane lipids are hydrophobic. C. The phosphate group of membrane lipids are positively charged. D. The phosphate group of membrane lipids are negatively charged.arrow_forwardWhat chemical property of phospholipids is key to the formation ofthe cell membrane?a. The positively charged nitrogen atomb. The covalent bond between the phosphate and the glycerolc. The kink in the fatty acid taild. The hydrophilic head and hydrophobic tailsarrow_forwardThese macromolecules self-assemble when exposed to water.and make up the primary component of cell membranes O a. Unsaturated fats O b. Saturated fats O c. Steroids Od. Phospholipids e. Proteins Of. Carbohydratesarrow_forward
- Unlike a phospholipid, cholesterol hasa. a glycerol backbone.b. a polar phosphate group.c. a multiple ring structure.d. unsaturated fatty acid chainsarrow_forwardcannot diffuse across a lipid bilayer. a. Water molecules b. Gases c. lons d. Nonpolar moleculesarrow_forwardLecithin is a.a carbohydrate. b.a protein. c.a steroid. d.a phospholipid.arrow_forward
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