What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 3, Problem 5MC
Summary Introduction
Introduction:
Fats are of two types – saturated and unsaturated.
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Which of the following statements concerning palmitic acid is INCORRECT?
a.
It can barely be dissolved in water.
b.
It is an unsaturated fatty acid.
c.
It is consisted of 16 carbons.
d.
It is a lipid.
Which of the following statements concerning fatty acids is correct?
a. Used to make phospholipids
b. They all contain one or more double bonds.
c. They are a constituent of sterols.
d. They are strongly hydrophilic.
Which of the following statements is true regarding cellulose?
Select one:
A. It is a primary structural component of plant cell walls.
B. It is digestible by bacteria in the human gut.
C. It is a polymer of glucose joined by α glycosidic linkages.
D. It is a polymer composed of enantiomers of glucose.
E. It is a storage polysaccharide for energy in plant cells.
Chapter 3 Solutions
What Is Life? A Guide to Biology with Physiology
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- The functionality of a substance is defined as any property, nutritional or not, that intervenes in its use. This depends on its physical and chemical properties that are affected during food processing, storage, preparation and consumption. For example: A. Bakery: the viscosity and the ability to form dough is related to the proteins of wheat gluten. B. Meat products: texture and succulence are dependent on water soluble meat proteins C. Dairy: texture and curd properties of dairy products are due to the colloidal structure of casein micelles D. Cakes (cakes) and desserts: depend on the foaming and gelling properties of the proteins in the egg white E. All are correctarrow_forwardWhich of the following statements concerning glycolipids is true? a. All glycolipids contain sphingosine. b. All glycolipids contain one sugar residue. c. All glycolipids contain phosphatidylglycerol. d. Some glycolipids contain ceramide, while others do not.arrow_forwardA molecule that contains glycerol and is liquid at room temperature is probably a/an... Group of answer choices A. unsaturated fat B. steroid C. unsaturated protein D. saturated fat E. carbohydratearrow_forward
- A molecule that contains glycerol and is liquid at room temperature is probably a/an... A. unsaturated protein B. carbohydrate C. steroid D. saturated fat E. unsaturated fatarrow_forwardWhich of the following statements about saturated fats is true? a. Saturated fats contain one or more double bonds along the tails. b. Saturated fats contain the maximum number of hydrogens along the tails. c. Saturated fats make up the majority of most plant oils. d. Saturated fats are typically healthier for you than unsaturated fats.arrow_forwardipids that are liquid at room temperature:a. are fats.b. contain more hydrogen atoms than lipids that are solids at room temperature.c. if polyunsaturated, contain several double bonds in their fatty acid chains.d. lack glycerol.e. are not stored in cells as triglycerides.arrow_forward
- A fatty acid is unsaturated if ita. contains hydrogen.b. contains carbon–carbon double bonds.c. contains a carboxyl (acidic) group.d. is bound to a glycerol.arrow_forwardThe building blocks of nucleic acids are a. amino acids. b. fatty acids. c. monosaccharides. d. nucleotides. e. lipids.arrow_forwardWhich of the following statements about amino acids is true? A. Twenty two amino acids are commonly found in proteins. B. Amino acids are often linked together to form branched polymers. C. All amino acids contain an NH2 and a COOH group. D. Most of the amino acids used in protein biosynthesis have charged side chains.arrow_forward
- Which of the following pairs of amino acids stabilizes a fold in a polypeptide chain through ionic interaction at physiological pH? A. cysteine and cysteine B. phenylalanine and valine C. glutamate and lysine D. serine and threoninearrow_forwardIndicate whether each of the following descriptions concerning the molecule sphingosine is true or false. a. Carbons 1, 2, and 3 all bear the same kind of functional group. b. Three different kinds of functional groups are present. c. It is an unsaturated diaminoalcohol. d. The carbon chain contains 20 carbon atoms.arrow_forwardWhich of the following statements best describes glucose? a. It is an aldohexose. b. It is produced from dietary starch by the action of α-amylase. c. It is utilized in biological systems only in the L-isomeric form. d. It is a disaccharide.arrow_forward
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