Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 3, Problem 13RQ
Phospholipids 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 chains
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Phospholipids are important components of__________.a. the plasma membrane of cellsb. the ring structure of steroidsc. the waxy covering on leavesd. the double bond in hydrocarbon chains
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III. usually has a ceramide moiety
IV. function as a precursor to sterols.
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Chapter 3 Solutions
Biology 2e
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- Ceramides work in tandem with cholesterol and saturated fatty acids to give your skin water impermeability. Explain how the structure of these types of molecules would in fact lead to skin being water-impermeable.arrow_forwardThe structure of a lipid bilayer is determined by the particular properties of its lipid molecules. What would happen if A. Phospholipids had only one hydrocarbon tail instead of two?B. The hydrocarbon tails were shorter than normal, say, about 10 carbon atoms long?C. All of the hydrocarbon tails were saturated?D. All of the hydrocarbon tails were unsaturated?E. The bilayer contained a mixture of two kinds of phospholipid molecules, one with two saturated hydrocarbon tails and the other with two unsaturated hydrocarbon tails?F. Each phospholipid molecule were covalently linked through the end carbon atom of one of its hydrocarbon tails to a phospholipid tail in the opposite monolayer?arrow_forwardThe cell membranes are made of phospholipids arranged in a structure called the 'phospholipid bilayer'. Describe how the phospholipids interact with each other and water to keep the phospholipid bilayer together.arrow_forward
- A student uses iodine to visualize cells under the light microscope. Iodine stains starch deep blue and glycogen granules dark brown. Observation of the cells reveals the presence of cell walls, dark brown granules, mitochondria, and a prominent nucleus. If the chemical composition of the cell wall is determined, which of the following molecules would MOST likely be the major constituent? A. cellulose B. chitin C. lignin D. peptidoglycanarrow_forwardWhy are phospholipids the main lipid component of membranes? A. these molecules can interact with each other B. these molecules contain hydrophilic groups that interact with water C. these molecules are nonpolar D. these molecules are able to interact with water while preventing continuous movements of metabolites to and from the environment E. these molecules are fluid and dynamic.arrow_forwardWhich 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 storagearrow_forward
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