Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 2, Problem 10RQ
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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Which of the following molecules is not capable of forming lipid bilayers? a. glycolipids b. wax esters c. phospholipids d. cerebrosides
Sphingolipids do _________________.
I. contain a glycerol core with a phosphocholine headgroup.
II. contain a modified sphingosine.
III. usually has a ceramide moiety
IV. function as a precursor to sterols.
I, II, IV
II, IV
I, II, III
II, III
Phospholipids are important components of
A. bacterial cell walls
B. ribosomes
C. carbohydrates
D. steroid lipids
E. lipid droplets
Chapter 2 Solutions
Concepts of Biology
Ch. 2 - Figure 2.3 How many neutrons do (K) potassium-39...Ch. 2 - Magnesium has an atomic number of 12. Which of the...Ch. 2 - Which type of bond represents a weak chemical...Ch. 2 - An isotope of sodium (Na) has a mass number of 22....Ch. 2 - Which of the following statements is not true? a....Ch. 2 - Using a pH meter, you find the pH of an unknown...Ch. 2 - The pH of lemon juice is about 2.0, whereas tomato...Ch. 2 - An example of a monosaccharide is ________. a....Ch. 2 - Cellulose and starch are examples of______. a....Ch. 2 - Phospholipids are important components of_______....
Ch. 2 - The monomers that make up proteins are...Ch. 2 - Why are hydrogen bonds and van der Waals...Ch. 2 - Why can some insects walk on water?Ch. 2 - Explain why water is an excellent solvent.Ch. 2 - Explain at least three functions that lipids serve...Ch. 2 - Explain what happens if even one amino acid is...
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- The major lipid components of cell membranes are: OA. sphingolipids O B. prostaglandins O c. phosphoglycerides D. terpenoids 34arrow_forwardWhich of the following are the main structural components of the lipid bilayer of all cell membranes? A. Phospholipids B. Waxes C. Triglycerides D. Steroidsarrow_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
- Unlike a phospholipid, cholesterol hasa. a glycerol backbone.b. a polar phosphate group.c. a multiple ring structure.d. unsaturated fatty acid chainsarrow_forwardSphingolipids can contain of all of the following except A. glycerol. B. sphingosine. C. phosphocholine. D. a mono- or oligosaccharide.arrow_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_forward
- The followings are the biological roles of cholesterol EXCEPT ____. a. as a component of sphingolipids b. forming bile acids c. integral structure of membrane d. as precursor of sex hormonesarrow_forwardWhich of the following is NOT a polymer? a. Glycogen b. Olive oil O C. Proteins O d. DNA O e. Cellulosearrow_forwardWhat properties define the phospholipids that make up the lipid bilayer? Select all that apply. A. Nonpolar, hydrophobic hydrocarbon tails B. Polar, hydrophilic phosphate heads C. Nonpolar, hydrophobic phosphate heads D. Polar, hydrophilic hydrocarbon tailsarrow_forward
- The 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_forwardWhich of the following is used in the reaction called saponification? A. Strong Base B. Hydrogen C. Strong acid D. Nickel Fatty acids contain in __ - hydrogen bonds, making them __. The Phosphate "head" in a phospholipid is __. The entire phospholipid molecule, therefore, is __. A. Carbon; hydrophobic; hydrophilic; amphiphilic B. Hydrogen; hydrophilic; hydrophilic; amphiphilic C. Carbon; hydrophilic; hydrophilic; hydrophobic D. Hydrogen; hydrophobic; hydrophobic; hydrophobicarrow_forwardPhosphatidylinositol 4,5-bisphosphate (PIP2) is a __________ that carries a net __________ charge. A. glycerophospholipid; -1 B. glycerophospholipid; -2 C. glycerophospholipid; -4 D. sphingolipid; -2 E. sphingolipid; -3arrow_forward
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